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B24-0895 - 25566 VIA DEL REY03/07/2025 Date: Permit No. Applicant: Phone/E-Mail Job Location: CITY OF SAN JUAN CAPISTRANO BUILDING PERMIT FEES Account # Type Cost 01-44221 Building Permit 01-44223 Mechanical 01-44224 Plumbing 01-44225 Electrical 01-44221 Mobile Home Permit 01-44222 Grading Permit Fee 01-44231 Grading Plan Check 01-44222 On-Site Residential Permit 01-44231 On-Site Residential Plan Check Subtotal 01-44230 Bond Processing 01-44230 Building Plan Check 01-44230 Additional Plan Check 01-44230 Digital Record Fee ($1.00 per sheet) 01-44221 C & D Administrative Fee 01-44221 Special Inspection-Reinspection 01-44222 On-Site Commercial/Tract Permit Fee 01-44231 On-Site Commercial/Tract Plan Check Fee 01-44214 Geotechnical Soils Plan Review 10-44320 Ordinance 211 10-42510 Ordinance 364 01-45354 Copies @ .20 Each 90-23331 SMIP Fee 33-44370 H.O.P.E. Fee (Housing in Lieu) Other Fees TCA Fees Date Received HOA Approval Date Received School Fees Date Received Engineering Fees Date Received Water Division Fees Date Received 01-44221 01-44221 01-44240 90-23000 90-23000 TOTAL FEES PAYABLE TO CITY OF SAN JUAN CAPISTRANO Receipt # _________ Date: ______________ Cashier: _____________________________ Refundable Bond/Deposit Posted by ______Owner_____Contractor ________Type Title 24 Energy Provision (20% Permit Subtotal & Bldg Plan Check)) Title 24 ADA Fee (10% Permit Subtotal & Bldg Plan Check) Refundable Bond/Deposit Posted by ______Owner_____Contractor ________Type NPDES Permit Fee (10% Permit Subtotal) $0.00 $ 47.39 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $ 115.95 10/29/2024 $ 163.34 $0.00 $ 47.39 10/29/2024 B24-0895 SUNRUN INSTALLATION SERV 25566 VIA DEL REY (201) 560-7331 $0.00 From:Symbium Support To:Building Department Cc:oc_permits@sunrun.com; melissa.foxx-sarmiento@sunrun.com Subject:Symbium permit submission for Expedited Residential Solar Voltaic Permit at 25571 Via Del Rey Date:Wednesday, September 25, 2024 11:21:11 AM [The e-mail below is from an external source. Please do not open attachments or click links from an unknown or suspicious origin.] Dear San Juan Capistrano’s Building & Safety Division, Please find attached the completed application for an Expedited Residential Solar Voltaic Permit on 25571 Via Del Rey submitted by contractor SUNRUN INSTALLATIONS . Scope of Work Summary Install 9 PV modules (3.56KW) with Tesla Inc. inverter and 9 optimizers; install 1 ESS unit in a detached garage. The estimated job value, as provided by the applicant, is $9,000. Owner Details Name. Aaron Krempasky Address. 25571 Via Del Rey, San Juan Capistrano, CA 92675 Phone. (949) 395-7024 Email. oc_permits@sunrun.com Contractor Details B24-0895 CORRECT ADDRESS: 25566 VIA DEL REY, SAN JUAN CAPISTRANO, CA 92675 Name. SUNRUN INSTALLATIONS CSLB License. 750184 Business License. 75883 Address. 8 Whatney, Irvine, CA 92618 Phone. (201) 560-7331 Email. melissa.foxx-sarmiento@sunrun.com Project Documents site plan.pdf (Site plan) sld.pdf (Electrical line diagram) specs.pdf (Specification sheet or installation manual) symbium-inspection-checklist.pdf (Symbium inspection checklist) symbium-scope-compliance.pdf (Symbium approval document) San Juan Capistrano Electrical Load CALC 2024.pdf (Electrical load calculation) 991dd958-bdb8-4a8e-a758-321af268881c.jpeg (Main Service Panel & Subpanel Dead Front Cover Photos) 136959ff-c334-4f4a-82bc-18c19a13915c.jpeg (Main Service Panel & Subpanel Dead Front Cover Photos) contract.pdf (Signed Solar Contract with Homeowner) ess structural.pdf (ESS Structural Diagrams) The permit fees have not been collected for this application by Symbium. Please invoice the applicant directly. For any questions concerning the use of Symbium to generate this application, please contact us at support@symbium.com and use the project reference: project_12a71920-9f16-4dce-b994-109edbba376c. Best, Symbium Team Questions? Contact us at support@symbium.com ***** Please note that email correspondence with the City of San Juan Capistrano, along with attachments, may be subject to the California Public Records Act, and therefore may be subject to disclosure unless otherwise exempt. Project Scope and Compliance Details This document provides approval for a revision to issued permit B24-0895. This revision was requested at October 22, 2024, 10:35 AM PDT. Additional permit fees may apply. Document Guide Strikethrough indicates questions that the applicant did not respond affirmatively to. In these instances, an alternative method of compliance was specified by the applicant. This document is color-coded to show the type of changes made in this revision. Yellow is used to highlight edited responses. Green is used to highlight new responses. Project Location 25571 Via Del Rey Symbium Project ID project_f5b9ae8d-5084-43bf-87af-0bc4e1d21f2b Description of Revisions Updated address to 25566 Via Del Rey, moved ESS in garage Rooftop Solar or Battery Storage Installation Site Ground Snow Load: 0 psf Design Wind Speed: 106 mph Extreme Annual Mean Min. Dry Bulb Temperature: 3.8 ℃ 1 Energy Storage Systems (ESS) Manufacturer or Brand: Tesla Inc. Model: 1707000-XX-Y Size: 13.5 kWh Total number of units: 1 Location: In an attached garage Not selected: This installation involves adding additional ESS units to an existing system. Additional Details for Energy Storage Systems (ESS) Not selected: Individual units are no closer than 36 inches ESS units are installed on end walls below 48 inches Not selected: Units are installed in accordance with approved large- scale fire testing results (UL 9540a or equivalent approved tests) Impact protection: Impact protection is not required because the clear height of the vehicle garage opening is 7 feet 6 inches (2286 mm) or less and no portion of the ESS unit will be less than 36 inches (914 mm) above the finished floor. ESS is installed according to manufacturer’s installation instructions. Heat alarms are installed for the ESS units installed in attached garages. ESS installation exceeds 250 lbs. Rooftop Photovoltaic (PV) Module Manufacturer or Brand: LONGi Green Energy Technology Co., Ltd. Model: LR5-54HABB-395M Number of modules being installed: 9 The PV system meets the minimum required fire class rating of the roof. Max. Power (Pmax): 395 W Max. open circuit voltage (Voc): 36.81 V Project Scope and Compliance Details 2 Source circuit current (ISC): 13.65 Amp Max. open circuit voltage (for module): 41.23 V UL-2703 fire rating: C Array mounting system is UL 2703 certified for bonding and grounding. Array mounting system uses UL 2703 grounding devices to bond separate exposed metal parts together or to the equipment grounding conductor. The solar module and mounting system is rated by the manufacturer to withstand the upward force of the local wind speed and evenly distribute load into the supporting structure at the proposed maximum spacing (validated through the UL 1703 or 61730 module rating for mechanical load rating, and UL 2703 mounting system mechanical load rating). Attachment points of the mounting system are staggered. PV array is flush-mounted, i.e. parallel to the roof. Max. distance of the PV array off the roof: 6 inches Max. spacing between adjacent attachment points: 72 inches PV system circuits on buildings meet requirements for controlled conductors in CEC 690.12. All exposed PV source circuit wiring is not smaller than 10 AWG PV wire or MFG cable All PV source circuit wiring in raceway is not smaller than 10 AWG THWN-2, XHHW-2, or RHW-2 Height of source circuit wiring above roof surface: 4 inches The PV system disconnecting means meets the requirements of CEC 690.13. Additional Details for Rooftop Photovoltaic (PV) Module Is there an existing PV system installed? No System size of new PV installation: 3.56 KW Total system size: 3.56 KW Project Scope and Compliance Details 3 Weight of the PV system: 3 psf Roof 1 Slope of roof surface: 5 : 12 Roof 2 Slope of roof surface: 5 : 12 Additional Details for Roof Roof covering material: Asphalt (composite) shingles There are no visually apparent disallowed rafter holes, notches and truss modifications. There are no visually apparent structural decay or un-repaired fire damage. Roof sag, measured in inches, is not more than the rafter or ridge beam length in feet divided by 20. I understand that roof jack, roof covering and roof sheathing inspections will be required. Roof covering beyond the area of the array will require a separate roofing permit. DC-to-DC Converter 1 Manufacturer: Tesla Model: 1707000-XX-Y Number of optimizers: 4 Maximum number of modules per optimizer: 1 Rated Max. Input Voltage: 550 V Min. string length: 3 Max. string length: 15 Existing equipment. Is this an existing DC-DC converter or optimizer?: No Project Scope and Compliance Details 4 DC-to-DC Converter 2 Manufacturer: Tesla Model: 1707000-XX-Y Number of optimizers: 5 Maximum number of modules per optimizer: 1 Rated Max. Input Voltage: 550 V Min. string length: 3 Max. string length: 15 Existing equipment. Is this an existing DC-DC converter or optimizer?: No Inverter Manufacturer or Brand: Tesla Inc. Model: 1707000-XX-Y [240V, 11.5kW] Inverter type: Hybrid string inverter Existing equipment. Is this an existing inverter?: No Strings per inverter input: 2 Strings per inverter: 2 How is the inverter installed? Load-side Power Control System connection complying with 705.13 [2022 CEC] Compliance Analysis for SOLAR RESIDENTIAL ONLINE Application Permit Application Requirements ✓ Qualified Personnel The project’s contractor must possess an active business license from the City of San Juan Capistrano and an active CSLB license with at least one of Project Scope and Compliance Details 5 the following classifications: B - General Building Contractor C-46 - Solar Contractor C-10 - Electrical Contractor Reference: CEC 690.4 ✓ Eligible projects To be eligible for an Approval Document from Symbium, a project must involve installation of a PV module or an ESS unit. ✓ AC Nameplate Rating of PV Modules As per Senate Bill 379, residential rooftop PV installations that are no larger than 38.4 KW AC nameplate rating may qualify for an express permit. Reference: Senate Bill 379 Structural PV Array Mounting Requirements ✓ Weight of the PV System The 4 psf average self-weight limit of a PV array, including its support components, is easily met by virtually all PV systems. Even glass-on-glass modules, including bifacial modules, fit within this distributed weight limit. This limit is similar to the weight of roof overlays, which were usually allowed automatically in 1990s and earlier Building Codes. ✓ UL-2703 Fire Rating of the PV system The PV system meets the minimum required fire class rating of the roof. Reference: CBC 1505.9 and R 902.4 ✓ Attachment Points of the Mounting System By staying within the 4 psf distributed weight for the array, the point- loading of roof framing members is negligible. When the design snow load Project Scope and Compliance Details 6 is 10 psf or less, staggering of attachments is not necessary since the combined load of the snow and the array is still within the point loading limits of the roof members. ✓ Maximum Spacing between Adjacent Attachment Points The standard distance between attachment points for most locations in the United States is 48 inches. This allows for snow loads up to 60 psf and wind loads as high as 150 mph. For low snow load (10 psf or less) and low wind load (120 mph or less) areas, an attachment distance of 72 inches is permitted without causing excessive loading of roof framing members. Also, these rules are contingent on the distributed weight of the array being no greater than 4 psf. ✓ Maximum Distance off the Roof Roof installations of PV arrays that are not parallel (or nearly parallel) to the roof structure present unique wind and snow loading issues that may need further review by a design professional. Most residential rooftop PV arrays are mounted between 4 inches and 6 inches off the surface of the roof and are parallel, or nearly parallel to the roof surface. A system on a flat roof will be mounted at a slight angle in most cases to prevent pooling of water on the surface of the solar panels. For parallel-to-roof arrays, the distance between the roof surface and underside of module needs to be limited to 10 inches to control wind uplift pressures and take advantage of the “Kopp factor”. Wind tunnel research (Stenabaugh et al, 2014) shows that this reduction factor is 0.80 or less for arrays up to 10 inches off the roof. ✓ Mechanical Load Rating This check is to ensure that the mechanical loading of the structural rails and attachments are being applied consistently with the manufacturer’s instructions and any listing requirements. The PV modules are listed to UL 1703 or UL 61730 and the manufacturer’s instructions dictate how the module is to be supported and held in place for various mounting methods. The mounting system may or may not be listed to UL 2703 for mechanical load rating. If the UL 2703 mechanical load rating is required by the manufacturer, then the installation must comply with any limitation that this load rating requires. Project Scope and Compliance Details 7 ✓ Wood Shake Roofs PV installations on wood shake roofs are not eligible for an express solar permit. ✓ Roof is structurally sound Rafters that fail the above criteria should not be used to support solar arrays unless they are first strengthened. Excessive roof sag can indicate an originally under-designed roof, or subsequent deterioration of a correctly designed roof. Roof sag, measured in inches, is not to exceed span, measured in feet, divided by 20. This corresponds to a dead load deflection of span L/240. Per IBC, dead plus live load deflections are not to exceed L/180, and if dead load is 10 psf and live load is in the range of 12 to 20 psf, the expected original dead load design deflection is of the order of one third to one half of L/180, that is, L/360 to L/540. Hence a larger dead load deflection of L/240 could indicate problems, warranting further investigation. ESS Electrical Code Installation Requirements ✓ UL 9540 listed ESS UL 9540 is an umbrella standard in that it includes several standards as prerequisites to fulfill the requirements in UL 9540. An ESS is defined as, “Equipment that receives energy and then provides a means to store that energy in some form for later use in order to supply electrical energy when needed”. The most common type of UL 9540 ESS utilizes a lithium-ion battery to store the energy. That lithium-ion battery must be listed to UL 1973, Standard for Stationary and Locomotive Batteries. In addition to the certification for the batteries, the inverters must be certified to UL 1741, Standard for Inverters, Converters, and Controllers for use in Distributed Energy Systems. This is the same standard used for PV utility-interactive inverters that must be specifically listed and labeled for this application [CEC 690.4(B)]. Without this specific identification process for ESS, an unacceptable amount of review would be necessary to approve the equipment used in these systems. ESS that pass UL 9540 meet the basic requirement in the CRC and the CEC for an ESS. Project Scope and Compliance Details 8 Reference: R 328.2 ✓ Installation of ESS Units ESS units must be installed according to manufacturer's installation instructions. Reference: R 328.3 ESS Residential Code Installation Requirements ✓ Limitation on Size of Individual ESS Units This requirement limits the size of an individual ESS unit to 20 kWh. One reason for this basic limitation is to put an upper bound on the amount of energy that can be stored in one enclosure. Individual enclosures are limited to 20 kWh which is consistent with the language of the 2022 CRC. Reference: R 328.5 ✓ Size and Location of ESS Units ESS shall be installed only in the following location: Detached garages and detached accessory structures. Attached garages separated from the dwelling unit living space in accordance with Section R302.6. Outdoors or on the exterior side of exterior walls located not less than 3 feet (914 mm) from doors and windows directly entering the dwelling unit. Enclosed utility closets, basements, storage or utility spaces within dwelling units with finished or noncombustible walls and ceilings. Walls and ceilings of unfinished wood-framed construction shall be provided with not less than 5/8-inch (15.9 mm) Type X gypsum wallboard. The aggregate rating of the ESS shall not exceed: Project Scope and Compliance Details 9 40 kWh within utility closets, basements and storage or utility spaces. 80 kWh in attached or detached garages and detached accessory structures. 80 kWh on exterior walls. 80 kWh outdoors on the ground. Reference: R 302.6 ✓ Installation of Approved Vehicle Protection Where an ESS is installed in a garage, units are installed along side walls and units installed on end walls above 48 inches do not need vehicle protection. Where units are installed on end walls below 48 inches, approved vehicle protection is installed (e.g. parking curb, barrier, bollard), unless impact protection is not required because the clear height of the vehicle garage opening is 7 feet 6 inches (2286 mm) or less and no portion of the ESS unit will be less than 36 inches (914 mm) above the finished floor. Reference: R 328 ✓ Fire Detection Rooms and areas within dwellings units, basements, and attached garages in which ESS are installed shall be protected by smoke alarms in accordance with Section R314. A heat detector listed and interconnected to the smoke alarms shall be installed in locations within dwelling units and attached garages where smoke alarms cannot be installed based on their listing. Reference: R 328.7, R 314, and R 315 PV System Electrical Code Installation Requirements ✓ Grounding and bonding of array mounting system This requirement is to simplify the process of ensuring that the exposed metal of a PV array is well-grounded. UL 2703 has numerous mounting Project Scope and Compliance Details 10 system products on the market that are compatible with many of the PV modules on the market. One key aspect of these listings is that UL2703 certification for a particular mounting system is specific for the PV modules to which it has been evaluated. Generally, the specific type or family of PV module from a specific manufacturer is provided with the installation instructions to show to which PV module products the mounting system has been evaluated. Alternatively, it is possible to install a PV array mounting system that is not fully listed to UL 2703. In this case, each separate exposed metal part would need to have a UL 2703 listed bonding device attached to it for it to be bonded to adjacent metal parts 690.43 [2022 CEC] or a UL 2703 listed bonding device to connect the metal to the EGC. The only exposed metal parts not specifically required to be grounded are the roof attachments that attach the mounting system to the roof. These roof attachments and flashings are not likely to be energized and are often not exposed. The roof attachments are treated in a similar way that other mechanical fittings are treated in the CEC. The definition in Article 100 of fitting in the CEC is as follows: “Fitting. An accessory such as a locknut, bushing, or other part of a wiring system that is intended primarily to perform a mechanical rather than an electrical function.” Reference: CEC 690.43 ✓ Maximum Number of Series Strings per Inverter This requirement is to limit the number of circuits to those configurations that are common for current residential PV systems. Most string inverters today have two, three, or four separate DC inputs. By limiting the number of strings for each input to one or two, no string fusing is necessary. This greatly simplifies the installation process and keeps it consistent with current practice. By limiting the overall input to the inverter to no more than four series strings, this ensures that the conduit connected to an inverter will have no more than 8 current-carrying conductors, upon which the conductor sizing in this guide is based. If 10 - 20 current-carrying conductors are in the exposed conduit, then the conduit fill correction factor is 0.5, requiring 10 AWG conductors for PV source circuit wiring in Project Scope and Compliance Details 11 the raceway. ✓ Field Installed PV Array Wiring This requirement is to simplify PV array wiring. Residential PV system wiring can be reduced to two main categories: (a) exposed string wiring is 12 AWG PV Wire [CEC 690.31(C)(1)]; and, (b) PV source circuit wiring is 12 AWG THWN-2, XHHW-2, or RHW-2. These simple rules work for any PV system with four source circuits or less using PV modules with a rated short circuit current of no greater than 12.8 amps. Since the highest ISC for most PV modules commonly available are less than 12.8 amps, 12 AWG conductors will work for these modules regardless of location in the U.S. as long as there are no more than 9 current carrying conductors in the conduit and the conduit is at least 7/8 inches above the roof surface. For those PV modules with an ISC above 12.8 amps, 10 AWG conductors must be used. Reference: CEC 690.31(c) and CEC 310.15(b)(3)(c) ✓ Equipment is rated for the maximum DC voltage applied. This requirement addresses the need to check to make sure that all equipment that is connected together on the DC side of a PV system is properly configured to prevent equipment from having the DC voltage limits exceeded. Reference: CEC 690.7 ✓ Requirements for Controlled Conductors The 2022 CEC requires that PV system conductors on buildings be controlled to a safer condition when a rapid shutdown switch is operated. The controlled conductors outside 1 foot from the array must be shutdown to below 30 volts within 30 seconds and PV array wiring within the array be controlled to a safer condition when in rapid shutdown mode. Conductors in the array can meet the requirement by segmenting to 80 volt sections within 30 seconds or meet either of the other two requirements in 690.12(B)(2). As of 2021, a new array listing process is available called PV Hazard Control (UL 3741). This new process allows array systems to be Project Scope and Compliance Details 12 evaluated and meet the requirements with the PV array as outlined in 690.12(B)(2)(1) and 690.12(B)(2)(a) [2022 CEC]. Reference: CEC 690.12 ✓ Disconnecting Means The 2022 CEC requires that the PV system disconnecting means separates the PV system from all other systems in a building. Details in CEC 690.13(E) list the characteristics of a PV disconnect. Most commonly a PV system disconnecting means is a switch or circuit breaker. This switch or circuit breaker is marked “PV System Disconnect”, and must be installed in a readily accessible location CEC 690.13(A). Reference: CEC 690.13(a) ✓ DC-to-DC Converters are installed according to manufacturer's installation instructions This requirement addresses the need to check to make sure that the installed DC-to-DC Converters meet the datasheet specifications for minimum and maximum string lengths. ✓ The PV array and inverters are correctly configured for safe operation This requirement addresses the need to ensure that: Sufficient number of inverter strings, microinverters, or optimizers are available for the installed PV modules. The maximum number of PV modules that can be connected to a string inverter equals the number of inverter strings times the maxmimum number of modules per string. The maximum number of PV modules that can be connected to a microinverters equals the number of microinverters times the maximum number of modules per microinverter. The maximum number of PV modules that can be connected to optimizers equals the number of optimizers. Sufficient number of microinverter circuits are configured as needed. PV and ESS Electrical Code Interconnection Requirements Project Scope and Compliance Details 13 ✓ Inverter Installation The inverter installation should meet the requirements of Article 705. Reference: CEC Article 705 Project Scope and Compliance Details 14 Project Scope and Compliance Details Strikethrough indicates questions that the applicant did not respond affirmatively to. In these instances, an alternative method of compliance was specified by the applicant. Project Location 25571 Via Del Rey Symbium Project ID project_12a71920-9f16-4dce-b994-109edbba376c Rooftop Solar or Battery Storage Installation Site Ground Snow Load: 0 psf Design Wind Speed: 106 mph Energy Storage Systems (ESS) Manufacturer or Brand: Tesla Inc. Model: 1707000-XX-Y Size: 13.5 kWh Total number of units: 1 Location: In a detached garage Not selected: This installation involves retrofitting existing ESS units Additional Details for Energy Storage Systems (ESS) Not selected: Individual units are no closer than 36 inches Not selected: ESS units are installed on end walls below 48 inches 1 Units are installed in accordance with approved large-scale fire testing results (UL 9540a or equivalent approved tests) Impact protection: Impact protection is not required because the clear height of the vehicle garage opening is 7 feet 6 inches (2286 mm) or less and no portion of the ESS unit will be less than 36 inches (914 mm) above the finished floor. ESS is installed according to manufacturer’s installation instructions. ESS installation exceeds 250 lbs. Rooftop Photovoltaic (PV) Module Manufacturer or Brand: LONGi Green Energy Technology Co., Ltd. Model: LR5-54HABB-395M Total number of modules: 9 Number of existing modules: 0 The PV system meets the minimum required fire class rating of the roof. Max. Power (Pmax): 395 W Max. open circuit voltage (Voc): 36.81 V Source circuit current (ISC): 13.65 Amp Extreme Annual Mean Min. Dry Bulb Temperature: 3.8 ℃ Max. open circuit voltage (for module): 41.23 V UL-2703 fire rating: C Array mounting system is UL 2703 certified for bonding and grounding. Array mounting system uses UL 2703 grounding devices to bond separate exposed metal parts together or to the equipment grounding conductor. The solar module and mounting system is rated by the manufacturer to withstand the upward force of the local wind speed and evenly distribute load into the supporting structure at the proposed maximum spacing (validated through the UL 1703 or 61730 module rating for mechanical load rating, and UL 2703 mounting system mechanical load rating). Project Scope and Compliance Details 2 Attachment points of the mounting system are staggered. PV array is flush-mounted, i.e. parallel to the roof. Max. distance of the PV array off the roof: 6 inches Max. spacing between adjacent attachment points: 72 inches PV system circuits on buildings meet requirements for controlled conductors in CEC 690.12. All exposed PV source circuit wiring is not smaller than 10 AWG PV wire or MFG cable All PV source circuit wiring in raceway is not smaller than 10 AWG THWN-2, XHHW-2, or RHW-2 Height of source circuit wiring above roof surface: 4 inches The PV system disconnecting means meets the requirements of CEC 690.13. Additional Details for Rooftop Photovoltaic (PV) Module Total AC rating of PV modules: 3.56 KW Weight of the PV system: 3 psf Roof 1 Slope of roof surface: 5 : 12 Roof 2 Slope of roof surface: 5 : 12 Additional Details for Roof Roof covering material: Asphalt (composite) shingles There are no visually apparent disallowed rafter holes, notches and truss modifications. There are no visually apparent structural decay or un-repaired fire damage. Roof sag, measured in inches, is not more than the rafter or ridge beam Project Scope and Compliance Details 3 length in feet divided by 20. I understand that roof jack, roof covering and roof sheathing inspections will be required. Roof covering beyond the area of the array will require a separate roofing permit. DC-to-DC Converter 1 Manufacturer: Tesla Model: 1707000-XX-Y Quantity: 5 Rated Max. Input Voltage: 550 V Min. string length: 3 Max. string length: 15 DC-to-DC Converter 2 Manufacturer: Tesla Model: 1707000-XX-Y Quantity: 4 Rated Max. Input Voltage: 550 V Min. string length: 3 Max. string length: 15 Inverter Manufacturer or Brand: Tesla Inc. Model: 1707000-XX-Y [240V, 11.5kW] Inverter type: Hybrid string inverter Strings per inverter input: 2 Strings per inverter: 2 How is the inverter installed? Load-side Power Control System connection complying with 705.13 [2022 CEC] Project Scope and Compliance Details 4 Compliance Analysis for SOLAR RESIDENTIAL ONLINE Application Permit Application Requirements ✓ Qualified Personnel The project’s contractor must possess an active business license from the City of San Juan Capistrano and an active CSLB license with at least one of the following classifications: B - General Building Contractor C-46 - Solar Contractor C-10 - Electrical Contractor Reference: CEC 690.4 ✓ Eligible projects To qualify for an online solar permit, a project must involve installation of a PV module or an ESS unit. ✓ AC Nameplate Rating of PV Modules As per Senate Bill 379, residential rooftop PV installations that are no larger than 38.4 KW AC nameplate rating may qualify for an express permit. Reference: Senate Bill 379 ✓ Site Plan Requirements The following must be identified in the site plan: Rooftop layout of PV array Location of roof edge, hips, and/or valleys Roof access point Access pathways Distance of PV from roof edge, hips, and/or valleys PV system fire classification Project Scope and Compliance Details 5 Floor plan showing interior location of ESS and related electrical components Location of all ESS units Distance between the proposed ESS unit(s) and doors or windows which lead directly into the dwelling unit Means of access to ESS ✓ Electrical Line Diagram The following must be identified in the electrical line diagram: PV array configuration Wiring system Overcurrent protection ESS components Inverters Disconnects Required signs Interconnection options including the 120% rule, the sum of breakers rule, and supply-side service connections AC connection to building All existing and proposed equipment should be appropriately labeled ✓ Specification Sheets and Installation Manuals Specification sheets and installation manuals (if available) for all major PV system components. These uploads must include specifications for all of the following: PV modules Mounting systems DC-to-DC converters ESS components Inverters Reference: CEC 690.4 ✓ Energy Storage System Structural Diagrams Project Scope and Compliance Details 6 Structural diagrams are required for all energy storage system installations when: ESS installation exceeds 250 lbs. Structural diagrams should include manufacturer installation instructions, method of anchorage, and calculations if necessary. Structural PV Array Mounting Requirements ✓ Weight of the PV System The 4 psf average self-weight limit of a PV array, including its support components, is easily met by virtually all PV systems. Even glass-on-glass modules, including bifacial modules, fit within this distributed weight limit. This limit is similar to the weight of roof overlays, which were usually allowed automatically in 1990s and earlier Building Codes. ✓ UL-2703 Fire Rating of the PV system The PV system meets the minimum required fire class rating of the roof. Reference: CBC 1505.9 and R 902.4 ✓ Attachment Points of the Mounting System By staying within the 4 psf distributed weight for the array, the point- loading of roof framing members is negligible. When the design snow load is 10 psf or less, staggering of attachments is not necessary since the combined load of the snow and the array is still within the point loading limits of the roof members. ✓ Maximum Spacing between Adjacent Attachment Points The standard distance between attachment points for most locations in the United States is 48 inches. This allows for snow loads up to 60 psf and wind loads as high as 150 mph. For low snow load (10 psf or less) and low wind load (120 mph or less) areas, an attachment distance of 72 inches is permitted without causing excessive loading of roof framing members. Also, these rules are contingent on the distributed weight of the array being no greater than 4 psf. Project Scope and Compliance Details 7 ✓ Maximum Distance off the Roof Roof installations of PV arrays that are not parallel (or nearly parallel) to the roof structure present unique wind and snow loading issues that may need further review by a design professional. Most residential rooftop PV arrays are mounted between 4 inches and 6 inches off the surface of the roof and are parallel, or nearly parallel to the roof surface. A system on a flat roof will be mounted at a slight angle in most cases to prevent pooling of water on the surface of the solar panels. For parallel-to-roof arrays, the distance between the roof surface and underside of module needs to be limited to 10 inches to control wind uplift pressures and take advantage of the “Kopp factor”. Wind tunnel research (Stenabaugh et al, 2014) shows that this reduction factor is 0.80 or less for arrays up to 10 inches off the roof. ✓ Mechanical Load Rating This check is to ensure that the mechanical loading of the structural rails and attachments are being applied consistently with the manufacturer’s instructions and any listing requirements. The PV modules are listed to UL 1703 or UL 61730 and the manufacturer’s instructions dictate how the module is to be supported and held in place for various mounting methods. The mounting system may or may not be listed to UL 2703 for mechanical load rating. If the UL 2703 mechanical load rating is required by the manufacturer, then the installation must comply with any limitation that this load rating requires. ✓ Wood Shake Roofs PV installations on wood shake roofs are not eligible for an express solar permit. ✓ Roof is structurally sound Rafters that fail the above criteria should not be used to support solar arrays unless they are first strengthened. Excessive roof sag can indicate an originally under-designed roof, or subsequent deterioration of a correctly designed roof. Roof sag, measured in inches, is not to exceed span, measured in feet, divided by 20. This corresponds to a dead load deflection of span L/240. Per IBC, dead plus live load deflections are not to Project Scope and Compliance Details 8 exceed L/180, and if dead load is 10 psf and live load is in the range of 12 to 20 psf, the expected original dead load design deflection is of the order of one third to one half of L/180, that is, L/360 to L/540. Hence a larger dead load deflection of L/240 could indicate problems, warranting further investigation. ESS Electrical Code Installation Requirements ✓ UL 9540 listed ESS UL 9540 is an umbrella standard in that it includes several standards as prerequisites to fulfill the requirements in UL 9540. An ESS is defined as, “Equipment that receives energy and then provides a means to store that energy in some form for later use in order to supply electrical energy when needed”. The most common type of UL 9540 ESS utilizes a lithium-ion battery to store the energy. That lithium-ion battery must be listed to UL 1973, Standard for Stationary and Locomotive Batteries. In addition to the certification for the batteries, the inverters must be certified to UL 1741, Standard for Inverters, Converters, and Controllers for use in Distributed Energy Systems. This is the same standard used for PV utility-interactive inverters that must be specifically listed and labeled for this application [CEC 690.4(B)]. Without this specific identification process for ESS, an unacceptable amount of review would be necessary to approve the equipment used in these systems. ESS that pass UL 9540 meet the basic requirement in the CRC and the CEC for an ESS. Reference: R 328.2 ✓ Installation of ESS Units ESS units must be installed according to manufacturer's installation instructions. Reference: R 328.3 ESS Residential Code Installation Requirements Project Scope and Compliance Details 9 ✓ Limitation on Size of Individual ESS Units This requirement limits the size of an individual ESS unit to 20 kWh. One reason for this basic limitation is to put an upper bound on the amount of energy that can be stored in one enclosure. Individual enclosures are limited to 20 kWh which is consistent with the language of the 2022 CRC. Reference: R 328.5 ✓ Separation of ESS Units The basic code requirement is for ESS units to be located 36 inches apart. For instance, two separate 20 kWh energy storage units could be installed on either side of an inverter that was processing the DC power from these storage units. If no additional large-scale fire testing is provided, these units could be installed as close to the inverter as permitted by the inverter’s instructions and no closer than 36 inches apart from each other. However, if large-scale fire testing showed that the units could be safely installed 12 inches apart, it would be permissible to install both units next to one another on one side of the inverter. ✓ Size and Location of ESS Units ESS shall be installed only in the following location: Detached garages and detached accessory structures. Attached garages separated from the dwelling unit living space in accordance with Section R302.6. Outdoors or on the exterior side of exterior walls located not less than 3 feet (914 mm) from doors and windows directly entering the dwelling unit. Enclosed utility closets, basements, storage or utility spaces within dwelling units with finished or noncombustible walls and ceilings. Walls and ceilings of unfinished wood-framed construction shall be provided with not less than 5/8-inch (15.9 mm) Type X gypsum wallboard. The aggregate rating of the ESS shall not exceed: Project Scope and Compliance Details 10 40 kWh within utility closets, basements and storage or utility spaces. 80 kWh in attached or detached garages and detached accessory structures. 80 kWh on exterior walls. 80 kWh outdoors on the ground. Reference: R 302.6 ✓ Installation of Approved Vehicle Protection Where an ESS is installed in a garage, units are installed along side walls and units installed on end walls above 48 inches do not need vehicle protection. Where units are installed on end walls below 48 inches, approved vehicle protection is installed (e.g. parking curb, barrier, bollard), unless impact protection is not required because the clear height of the vehicle garage opening is 7 feet 6 inches (2286 mm) or less and no portion of the ESS unit will be less than 36 inches (914 mm) above the finished floor. Reference: R 328 ✓ Fire Detection Rooms and areas within dwellings units, basements, and attached garages in which ESS are installed shall be protected by smoke alarms in accordance with Section R314. A heat detector listed and interconnected to the smoke alarms shall be installed in locations within dwelling units and attached garages where smoke alarms cannot be installed based on their listing. Reference: R 328.7, R 314, and R 315 PV System Electrical Code Installation Requirements ✓ Grounding and bonding of array mounting system This requirement is to simplify the process of ensuring that the exposed metal of a PV array is well-grounded. UL 2703 has numerous mounting Project Scope and Compliance Details 11 system products on the market that are compatible with many of the PV modules on the market. One key aspect of these listings is that UL2703 certification for a particular mounting system is specific for the PV modules to which it has been evaluated. Generally, the specific type or family of PV module from a specific manufacturer is provided with the installation instructions to show to which PV module products the mounting system has been evaluated. Alternatively, it is possible to install a PV array mounting system that is not fully listed to UL 2703. In this case, each separate exposed metal part would need to have a UL 2703 listed bonding device attached to it for it to be bonded to adjacent metal parts 690.43 [2022 CEC] or a UL 2703 listed bonding device to connect the metal to the EGC. The only exposed metal parts not specifically required to be grounded are the roof attachments that attach the mounting system to the roof. These roof attachments and flashings are not likely to be energized and are often not exposed. The roof attachments are treated in a similar way that other mechanical fittings are treated in the CEC. The definition in Article 100 of fitting in the CEC is as follows: “Fitting. An accessory such as a locknut, bushing, or other part of a wiring system that is intended primarily to perform a mechanical rather than an electrical function.” Reference: CEC 690.43 ✓ Maximum Number of Series Strings per Inverter This requirement is to limit the number of circuits to those configurations that are common for current residential PV systems. Most string inverters today have two, three, or four separate DC inputs. By limiting the number of strings for each input to one or two, no string fusing is necessary. This greatly simplifies the installation process and keeps it consistent with current practice. By limiting the overall input to the inverter to no more than four series strings, this ensures that the conduit connected to an inverter will have no more than 8 current-carrying conductors, upon which the conductor sizing in this guide is based. If 10 - 20 current-carrying conductors are in the exposed conduit, then the conduit fill correction factor is 0.5, requiring 10 AWG conductors for PV source circuit wiring in Project Scope and Compliance Details 12 the raceway. ✓ Field Installed PV Array Wiring This requirement is to simplify PV array wiring. Residential PV system wiring can be reduced to two main categories: (a) exposed string wiring is 12 AWG PV Wire [CEC 690.31(C)(1)]; and, (b) PV source circuit wiring is 12 AWG THWN-2, XHHW-2, or RHW-2. These simple rules work for any PV system with four source circuits or less using PV modules with a rated short circuit current of no greater than 12.8 amps. Since the highest ISC for most PV modules commonly available are less than 12.8 amps, 12 AWG conductors will work for these modules regardless of location in the U.S. as long as there are no more than 9 current carrying conductors in the conduit and the conduit is at least 7/8 inches above the roof surface. For those PV modules with an ISC above 12.8 amps, 10 AWG conductors must be used. Reference: CEC 690.31(c) and CEC 310.15(b)(3)(c) ✓ Equipment is rated for the maximum DC voltage applied. This requirement addresses the need to check to make sure that all equipment that is connected together on the DC side of a PV system is properly configured to prevent equipment from having the DC voltage limits exceeded. Reference: CEC 690.7 ✓ Requirements for Controlled Conductors The 2022 CEC requires that PV system conductors on buildings be controlled to a safer condition when a rapid shutdown switch is operated. The controlled conductors outside 1 foot from the array must be shutdown to below 30 volts within 30 seconds and PV array wiring within the array be controlled to a safer condition when in rapid shutdown mode. Conductors in the array can meet the requirement by segmenting to 80 volt sections within 30 seconds or meet either of the other two requirements in 690.12(B)(2). As of 2021, a new array listing process is available called PV Hazard Control (UL 3741). This new process allows array systems to be Project Scope and Compliance Details 13 evaluated and meet the requirements with the PV array as outlined in 690.12(B)(2)(1) and 690.12(B)(2)(a) [2022 CEC]. Reference: CEC 690.12 ✓ Disconnecting Means The 2022 CEC requires that the PV system disconnecting means separates the PV system from all other systems in a building. Details in CEC 690.13(E) list the characteristics of a PV disconnect. Most commonly a PV system disconnecting means is a switch or circuit breaker. This switch or circuit breaker is marked “PV System Disconnect”, and must be installed in a readily accessible location CEC 690.13(A). Reference: CEC 690.13(a) ✓ DC-to-DC Converters are installed according to manufacturer's installation instructions This requirement addresses the need to check to make sure that the installed DC-to-DC Converters meet the datasheet specifications for minimum and maximum string lengths. ✓ The PV array and inverters are correctly configured for safe operation This requirement addresses the need to ensure that: Sufficient number of inverter strings, microinverters, or optimizers are available for the installed PV modules. Sufficient number of microinverter circuits are configured as needed. PV and ESS Electrical Code Interconnection Requirements ✓ Inverter Installation The inverter installation should meet the requirements of Article 705. Reference: CEC Article 705 Project Scope and Compliance Details 14 Applicant Acknowledgements The following statements have been acknowledged and agreed to by the Applicant on September 25, 2024, 11:19 AM PDT. By checking this box, I consent to Symbium submitting my permit application(s) on my behalf and acknowledge that any Symbium service fees are non-refundable. I will be responsible for payment of government fees in full, for which I will receive an invoice via email from the Authority Having Jurisdiction. I understand that the applicable government office, and not Symbium, has the final authority to approve any permit applications or other material submissions. Symbium makes every effort to produce and publish the most current and accurate information possible. No warranties, express or implied, are provided for the information on Symbium's site or via its services, its use, or its interpretation. Use of Symbium's website or services indicates an understanding and acceptance of this statement. Project Scope and Compliance Details 15 City of San Juan Capistrano Inspection Checklist This document provides an updated checklist for a revision to issued permit B24-0895. This revision was requested at October 22, 2024, 10:35 AM PDT. Updated address to 25566 Via Del Rey, moved ESS in garage Project Location 25571 Via Del Rey Symbium Project ID project_f5b9ae8d-5084-43bf-87af-0bc4e1d21f2b Scope of Work Install 9 PV modules 3.56KW; Install 1 ESS unit General All work done in a neat and workmanlike manner. [CEC 110.12] Equipment (e.g., ESS units, battery units, inverters, disconnects) is installed, listed, and labeled according to the submitted plan and manufacturers’ instructions. ESS units no greater than 20 kWh each. ESS units are spaced according to UL 9540 listing or with 3 feet spacing between units and between units and doors or windows entering the dwelling unit. ESS maximums are followed (40 kWh inside dwelling or 80 kWh in garage and elsewhere). Module manufacturer, make, model, and number of modules match 1 the submitted plans. [CBC 107.4] DC PV modules are listed to UL 1703. AC modules are listed to UL 1703 and UL 1741. Inverters are listed to UL 1741. [CEC 690.4, CRC R324.3.1] Modules are attached to the mounting structure according to the manufacturer’s instructions and the submitted plans. [CEC 110.3(B), CRC R324.3] Roof penetrations/attachments are properly flashed/sealed. [CRC R903, R324.4.3] System operating at 80 volts or greater is protected by listed dc arc fault protection. [CEC 690.11] Rooftop-mounted PV panels and modules have the proper fire classification rating. [CRC R324.4.2] Roofs with slopes greater than 2:12 have solar panel layouts with access pathways that comply with submitted roof plan. Unless otherwise approved by the fire service, the following shall apply. At least two 3-foot wide access pathways from the eave to the ridge with at least one of these pathways on the street or driveway side of the house. [CRC R324.6.1]. Panels/modules are located no higher than 18 inches from the top of the ridge where the PV array is less than 33% of the roof area or 66% of the roof area for sprinklered homes. For PV arrays greater than those allowed for an 18 inch ridge setback, a 3-foot space to the ridge is required. [CRC R324.6.2] Electrical Requirements Bonding and Grounding Grounding/bonding of ESS units, battery units, inverters, conduit and other electrical equipment according to the CEC and manufacturer’s instructions. A grounding electrode system is installed. [CEC 690.47] City of San Juan Capistrano Inspection Checklist 2 Modules and support structures are bonded and grounded in accordance with the manufacturer’s installation instructions with products certified to UL 2703. [CEC 690.43, 110.3(B)] Properly sized equipment grounding conductor is routed with the circuit conductors. [CEC 690.45] Grounding electrode conductors are properly connected. [CEC 690.47] Bonding fittings are used for ferrous metal conduits enclosing grounding electrode conductors. [CEC 250.64(E)] Conductors Conduit and other wiring methods installation according to the CEC and the submitted plan. Conductors, cables, and conduit types, sizes, and markings according to the submitted plan. Exposed single conductor cables are type USE-2 or PV Wire. [CEC 690.31(C)(1)] Conduit wiring is 90°C, wet-rated type RHW-2, THWN-2, or XHHW-2. [CEC 310.15] Only solidly grounded conductors marked white or gray (only ac neutral typically) [CEC 200.6] Open conductors are supported, secured, and protected. [CEC 334.30, 338.12(A)(3)] Cables are not in contact with the roof surface. [CEC 334.30] DC conductors inside a building are in a metal raceway or MC metal- clad cable that complies with 250.118(10), or metal enclosures. [CEC 690.31(G)] Where installed across ceiling or floor joists, Flexible metal conduit (FMC) smaller than 3/4 inches or Type MC cable smaller than 1 inch in diameter, containing PV system dc circuits, shall be protected by City of San Juan Capistrano Inspection Checklist 3 guard strips. [CEC 690.31(G)(2)]. For underground conductor installations, the burial depth is appropriate and warning tape is in place. [CEC 300.5(D)(3) & Table 300.5] Aluminum is not placed in direct contact with concrete. [CEC 250.120(B), 110.11] PV system conductors and premises wiring are separated. [CEC 690.31(B)] PV system conductors are grouped and identified. [CEC 690.31(B)] Overcurrent Protection Overcurrent protection devices are provided per the submitted plans. [CEC 690.9(A)] Overcurrent protection devices (OCPD) in PV system dc circuits are listed for use in PV systems. [CEC 690.9(B)] Combiner box, where used, is listed to UL 1741. [CEC 690.4(B)] Inverter output circuit breaker is located at opposite end of bus from utility supply at load center and/or service panelboard. If panel is center-fed, inverter output circuit breaker can be at either end of busbar [CEC 705.12(B)] (not required if the sum of the inverter and utility supply circuit breakers is less than or equal to the panelboard bus rating). Disconnects Disconnects are installed according to the submitted plan and properly located as required by the CEC. Disconnects used in DC circuits are listed for DC circuits. [CEC 110.3] Isolation devices are installed as required for PV equipment. [CEC 690.15] City of San Juan Capistrano Inspection Checklist 4 Load-break equipment disconnects are installed on all inverter and charge controller input circuits greater than 30 amps. [CEC 690.15] Where connectors are used as disconnecting means, they meet the ratings of the equipment to which they are connected. [CEC 690.33(E) & 690.15] A PV system disconnecting means, according to 690.13, provides disconnection of PV conductors from other conductors in the building. [CEC 690.13 Interconnection Requirements For grid-connected systems, documentation is provided to show that ESS meets utility interconnection requirements. PV system electrical interconnection point complies with the submitted plan. PV Modules and Array DC modules are properly marked and labeled. [CEC 110.3, 690.51] AC modules are properly marked and labeled. [CEC 110.3, 690.52] PV modules are in good condition (i.e., no broken glass or cells, no discoloration, frames not damaged, etc.). [CEC 110.12(B)] Maximum PV voltage of 600 volts for one- and two-family dwellings. [CEC 690.7] A rapid shutdown system is installed according to the submitted plan [CEC 690.12]. PV Source/Output Circuit Cable Management Cables are secured by staples, cable ties, straps, hangers or similar fittings at intervals that do not exceed 4.5 feet. [CEC 334.30, 338.12(A)(3)] City of San Juan Capistrano Inspection Checklist 5 Cables are secured within 12 inches of each box, cabinet, conduit body or other termination. [CEC 334.30, 338.12(A)(3)] Cable closely follows the surface of the building finish or of the running boards. [CEC 690.31(G)] Electrical Connections Crimp terminals are listed and installed using a listed tool specified for use in crimping those specific crimps. [CEC 110.14] Pressure terminals are listed for the environment and tightened to manufacturer recommended torque specifications. [CEC 110.11, 110.14] Connectors are listed for the voltage of the system and have appropriate temperature and ampere ratings. [CEC 110.14] Twist-on wire connectors are listed for the environment (i.e., wet, damp, direct burial, etc.) and installed per manufacturer’s instructions. [CEC 110.11, 110.14, 300.5(B)] Power distribution blocks are listed. [CEC 690.4, 314.28(E)] Terminals containing more than one conductor are listed for multiple conductors. [CEC 110.14(A)] Connectors and terminals used other than class B and C stranded conductors (fine stranded conductors) are listed and identified for use with specific conductor class or classes. [CEC 110.14(A)] Connectors that are readily accessible and over 30 volts require a tool for opening. [CEC 690.33(C)] All connectors are properly installed, fully engaged, and secure. [CEC 110.3(B), 110.12] Inverters Point of connection is at a dedicated breaker or disconnect (no loads). [CEC 705.12(B)(1)] City of San Juan Capistrano Inspection Checklist 6 Where a back-fed breaker is used as a utility interconnection means, the breaker is not marked “line and load.” [CEC 705.12(B)(4)] Any required barrier is installed between the ac, dc, or data wiring. [CEC 110.3(B), 110.27] Signs and Labels All interior and exterior dc conduit, enclosures, raceways, cable assemblies, junction boxes, combiner boxes and disconnects are marked. [CEC 690.31(G)(3), 690.31(G)(4), 690.53] The markings on the conduits, raceways and cable assemblies are every 10 feet, within one foot of all turns or bends and within one foot above and below all penetrations of roof/ceiling assemblies, walls and barriers. [CEC 690.31(G)(3), 690.31(G)(4)] The markings say “WARNING: PHOTOVOLTAIC POWER SOURCE” and have 3/8-inch (9.5 mm) minimum-sized white letters on a red background. The signs are made of reflective weather resistant material. [CEC 690.31(G)(3) & (G)(4)] Marking is placed adjacent to the main service disconnect in a location clearly visible from where the disconnect is operated. [CEC 705.10] Required labels shall be permanent and suitable for the environment. The labels in Table 1 are required where applicable. ESS Installation Requirements Access and working space for ESS equipment such as ESS units, battery units, inverters, disconnecting means, and panelboards [CEC 110.26]. For garage-installed ESS mounted on end wall of garage, vehicle protection is installed where required [CRC 328.8]. For ESS installed in attached garages, any required heat alarms are City of San Juan Capistrano Inspection Checklist 7 installed. City of San Juan Capistrano Inspection Checklist 8 City of San Juan Capistrano Inspection Checklist Project Location 25571 Via Del Rey Symbium Project ID project_12a71920-9f16-4dce-b994-109edbba376c Scope of Work Install 9 PV modules 3.56KW; Install 1 ESS unit General All work done in a neat and workmanlike manner. [CEC 110.12] Equipment (e.g., ESS units, battery units, inverters, disconnects) is installed, listed, and labeled according to the submitted plan and manufacturers’ instructions. ESS units no greater than 20 kWh each. ESS units are spaced according to UL 9540 listing or with 3 feet spacing between units and between units and doors or windows entering the dwelling unit. ESS maximums are followed (40 kWh inside dwelling or 80 kWh in garage and elsewhere). Module manufacturer, make, model, and number of modules match the submitted plans. [CBC 107.4] DC PV modules are listed to UL 1703. AC modules are listed to UL 1703 and UL 1741. Inverters are listed to UL 1741. [CEC 690.4, CRC R324.3.1] 1 Modules are attached to the mounting structure according to the manufacturer’s instructions and the submitted plans. [CEC 110.3(B), CRC R324.3] Roof penetrations/attachments are properly flashed/sealed. [CRC R903, R324.4.3] System operating at 80 volts or greater is protected by listed dc arc fault protection. [CEC 690.11] Rooftop-mounted PV panels and modules have the proper fire classification rating. [CRC R324.4.2] Roofs with slopes greater than 2:12 have solar panel layouts with access pathways that comply with submitted roof plan. Unless otherwise approved by the fire service, the following shall apply. At least two 3-foot wide access pathways from the eave to the ridge with at least one of these pathways on the street or driveway side of the house. [CRC R324.6.1]. Panels/modules are located no higher than 18 inches from the top of the ridge where the PV array is less than 33% of the roof area or 66% of the roof area for sprinklered homes. For PV arrays greater than those allowed for an 18 inch ridge setback, a 3-foot space to the ridge is required. [CRC R324.6.2] Electrical Requirements Bonding and Grounding Grounding/bonding of ESS units, battery units, inverters, conduit and other electrical equipment according to the CEC and manufacturer’s instructions. A grounding electrode system is installed. [CEC 690.47] Modules and support structures are bonded and grounded in accordance with the manufacturer’s installation instructions with products certified to UL 2703. [CEC 690.43, 110.3(B)] Properly sized equipment grounding conductor is routed with the circuit conductors. [CEC 690.45] City of San Juan Capistrano Inspection Checklist 2 Grounding electrode conductors are properly connected. [CEC 690.47] Bonding fittings are used for ferrous metal conduits enclosing grounding electrode conductors. [CEC 250.64(E)] Conductors Conduit and other wiring methods installation according to the CEC and the submitted plan. Conductors, cables, and conduit types, sizes, and markings according to the submitted plan. Exposed single conductor cables are type USE-2 or PV Wire. [CEC 690.31(C)(1)] Conduit wiring is 90°C, wet-rated type RHW-2, THWN-2, or XHHW-2. [CEC 310.15] Only solidly grounded conductors marked white or gray (only ac neutral typically) [CEC 200.6] Open conductors are supported, secured, and protected. [CEC 334.30, 338.12(A)(3)] Cables are not in contact with the roof surface. [CEC 334.30] DC conductors inside a building are in a metal raceway or MC metal- clad cable that complies with 250.118(10), or metal enclosures. [CEC 690.31(G)] Where installed across ceiling or floor joists, Flexible metal conduit (FMC) smaller than 3/4 inches or Type MC cable smaller than 1 inch in diameter, containing PV system dc circuits, shall be protected by guard strips. [CEC 690.31(G)(2)]. For underground conductor installations, the burial depth is appropriate and warning tape is in place. [CEC 300.5(D)(3) & Table 300.5] Aluminum is not placed in direct contact with concrete. [CEC City of San Juan Capistrano Inspection Checklist 3 250.120(B), 110.11] PV system conductors and premises wiring are separated. [CEC 690.31(B)] PV system conductors are grouped and identified. [CEC 690.31(B)] Overcurrent Protection Overcurrent protection devices are provided per the submitted plans. [CEC 690.9(A)] Overcurrent protection devices (OCPD) in PV system dc circuits are listed for use in PV systems. [CEC 690.9(B)] Combiner box, where used, is listed to UL 1741. [CEC 690.4(B)] Inverter output circuit breaker is located at opposite end of bus from utility supply at load center and/or service panelboard. If panel is center-fed, inverter output circuit breaker can be at either end of busbar [CEC 705.12(B)] (not required if the sum of the inverter and utility supply circuit breakers is less than or equal to the panelboard bus rating). Disconnects Disconnects are installed according to the submitted plan and properly located as required by the CEC. Disconnects used in DC circuits are listed for DC circuits. [CEC 110.3] Isolation devices are installed as required for PV equipment. [CEC 690.15] Load-break equipment disconnects are installed on all inverter and charge controller input circuits greater than 30 amps. [CEC 690.15] Where connectors are used as disconnecting means, they meet the ratings of the equipment to which they are connected. [CEC 690.33(E) & 690.15] City of San Juan Capistrano Inspection Checklist 4 A PV system disconnecting means, according to 690.13, provides disconnection of PV conductors from other conductors in the building. [CEC 690.13 Interconnection Requirements For grid-connected systems, documentation is provided to show that ESS meets utility interconnection requirements. PV system electrical interconnection point complies with the submitted plan. PV Modules and Array DC modules are properly marked and labeled. [CEC 110.3, 690.51] AC modules are properly marked and labeled. [CEC 110.3, 690.52] PV modules are in good condition (i.e., no broken glass or cells, no discoloration, frames not damaged, etc.). [CEC 110.12(B)] Maximum PV voltage of 600 volts for one- and two-family dwellings. [CEC 690.7] A rapid shutdown system is installed according to the submitted plan [CEC 690.12]. PV Source/Output Circuit Cable Management Cables are secured by staples, cable ties, straps, hangers or similar fittings at intervals that do not exceed 4.5 feet. [CEC 334.30, 338.12(A)(3)] Cables are secured within 12 inches of each box, cabinet, conduit body or other termination. [CEC 334.30, 338.12(A)(3)] Cable closely follows the surface of the building finish or of the running boards. [CEC 690.31(G)] City of San Juan Capistrano Inspection Checklist 5 Electrical Connections Crimp terminals are listed and installed using a listed tool specified for use in crimping those specific crimps. [CEC 110.14] Pressure terminals are listed for the environment and tightened to manufacturer recommended torque specifications. [CEC 110.11, 110.14] Connectors are listed for the voltage of the system and have appropriate temperature and ampere ratings. [CEC 110.14] Twist-on wire connectors are listed for the environment (i.e., wet, damp, direct burial, etc.) and installed per manufacturer’s instructions. [CEC 110.11, 110.14, 300.5(B)] Power distribution blocks are listed. [CEC 690.4, 314.28(E)] Terminals containing more than one conductor are listed for multiple conductors. [CEC 110.14(A)] Connectors and terminals used other than class B and C stranded conductors (fine stranded conductors) are listed and identified for use with specific conductor class or classes. [CEC 110.14(A)] Connectors that are readily accessible and over 30 volts require a tool for opening. [CEC 690.33(C)] All connectors are properly installed, fully engaged, and secure. [CEC 110.3(B), 110.12] Inverters Point of connection is at a dedicated breaker or disconnect (no loads). [CEC 705.12(B)(1)] Where a back-fed breaker is used as a utility interconnection means, the breaker is not marked “line and load.” [CEC 705.12(B)(4)] Any required barrier is installed between the ac, dc, or data wiring. [CEC 110.3(B), 110.27] City of San Juan Capistrano Inspection Checklist 6 Signs and Labels All interior and exterior dc conduit, enclosures, raceways, cable assemblies, junction boxes, combiner boxes and disconnects are marked. [CEC 690.31(G)(3), 690.31(G)(4), 690.53] The markings on the conduits, raceways and cable assemblies are every 10 feet, within one foot of all turns or bends and within one foot above and below all penetrations of roof/ceiling assemblies, walls and barriers. [CEC 690.31(G)(3), 690.31(G)(4)] The markings say “WARNING: PHOTOVOLTAIC POWER SOURCE” and have 3/8-inch (9.5 mm) minimum-sized white letters on a red background. The signs are made of reflective weather resistant material. [CEC 690.31(G)(3) & (G)(4)] Marking is placed adjacent to the main service disconnect in a location clearly visible from where the disconnect is operated. [CEC 705.10] Required labels shall be permanent and suitable for the environment. The labels in Table 1 are required where applicable. ESS Installation Requirements Access and working space for ESS equipment such as ESS units, battery units, inverters, disconnecting means, and panelboards [CEC 110.26]. City of San Juan Capistrano Inspection Checklist 7 Page 1 of 2 INSTRUCTIONS: •Review the electrical loads in the table below and check all that exist in the dwelling (be sure to include the proposed Level 2 EVCE and/or Photovoltaic System). •Fill in the corresponding VA (wattage) for each item checked, and then add up all the checked items to determine total wattage used. •Some wattages shown are estimates; it is always recommended to use actual values based on nameplate ratings on each appliance or motor, or consult with an electrical contractor or electrical engineer. •Provide clear photos of the dead front covers on the main service as well as all subpanels identifying the circuit and ampreage of all over-current devices. PROJECT ADDRESS: _______________________________________________________________________________ STATEMENT OF COMPLIANCE: By my signature, I attest that the information provided is true and accurate. Name of Property Owner/Applicant/Contractor: __________ Property Owner/Applicant Signature: __________________________________ (Signature of Applicant) (Date) RESIDENTIAL ELECTRICAL LOAD CALCULATION (Only for Dwelling Service Ratings of 120/240V, 225 Amps Max) City of San Juan Capistrano DeDevelopment Services Department 32400 Paseo Adelanto San Juan Capistrano, CA 92675 Phone: (949) 443-6347 Email: building@sanjuancapistrano.org www.sanjuancapistrano.org/building DF 02/14/24 Contractor: ________________________________________________________ __________ (Signature of Contractor) (Date) Note: This form is a voluntary compliance alternative and you may wish to hire a qualified individual or company to perform a thorough evaluation of your electrical service capacity in lieu of this methodology. Use of this electrical load calculation worksheet is at the user’s risk and carries no implied guarantee of accuracy. Users of this form are advised to seek professional assistance in determining the electrical ampacity of a service and busse(s). Symbium Project Id: project_12a71920-9f16-4dce-b994-109edbba376c Uploaded on September 25, 2024, 11:18 AM PDT Page 2 of 2 Enter All Applicable Appliances Description of Load Volt-Amps (Watts) on Nameplate Rating Total VA (Watts) General Lighting/Power Load Required Total Square footage of building times 3 sf x 3 volt-amp Required Kitchen Small Appliance Branch Circuits (min. 2) x 1,500 volt-amps/circuit Required Laundry Circuit (min. 1) x 1,500 Volt-Amps Appliances and Equipment Except Air Conditioner(s) Microwave or 1,400 VA Trash Compactor or 1,000 VA Dishwasher or 1,500 VA Disposal or 1,000 VA Electric Oven or 2,000 VA Electric Range or 5,000 VA Induction Range or 10,000 VA Electric Clothes Dryer or 5,000 VANP = Electric Water Heater NP = Electric Heat Pump Water Heater NP = Electric Vehicle Charging Equipment NP = NP =Pool or Spa Pumps Motors or 2,000 VAea. motor Other: Other: Other: Sub-Total Volt-Amps Used (add up V-A used for everything checked) - 10,000 V-A Subtotal (A) x .40 Subtotal (B) + 10,000 V-A Subtotal (C) Heating and Air-Conditioning (Add the largest of the following): + 1. Air conditioning and cooling (100% of nameplate (NP) rating) = 2. Heat pump without supplemental heating (100% NP Rating) = 3. Heat pump with supplemental electric heat (100% NP plus 65%) = 4. Electrical space heating , 4 separate units (65% NP rating) = 5. Electrical space heating > 4 separate units (40% NP rating) = 6. Electrical thermal storage and other 100% NP rating = Total Current Demand (Volt-Amps) = Divided by 240 Volts = Amps Total Amps Required for Service Conductors and Main Panel = Rating of Existing Electrical Service or Subpanel (Amps)= Panel Upgrade Required? (YES OR NO) Rating of Proposed Main Service Panel Buss (IF YES ABOVE)= VA VA VA DF 02/14/24 7.Other: Number of Appliances or Equipment NP = NP = NP = NP = NP = NP = NP = NP = NP = NP = NP = NP = VA VA Other: Other: VA VA VA DWELLING UNIT LOAD CALCULATION BASED ON CEC ART. 220 AND ANNEX D. NP = NAME PLATE RATING Total VA (Watts) PROJECT ADDRESS: PERMIT #:B -Symbium Project Id: project_12a71920-9f16-4dce-b994-109edbba376c Uploaded on September 25, 2024, 11:18 AM PDT 24 0895 Single Family Dwelling Load Calculation Step-by-Step Example (Optional Method) CEC 220.82 Given: Square foot area of home – 1700 square feet (sf) 1.5 kW (1,500 watts) dishwasher 10 kW range 15 kW central heat 4 kW water heater 29 amp, 240 volt air conditioning 4 kW clothes dryer Instructions: Step 1: Multiply the sf area by 3 volt-amperes (VA) per sf 1700 sf X 3 VA = 5,100 VA Step 2: Add 1,500 VA for each 2-wire, 20-amp small appliance branch circuit and the laundry circuit 1,500 VA X 3 = 4,500 VA Step 3: Add in the appliance loads at nameplate value or given on table (whichever is greater). Range 10,000 VA, Water heater 4,000 VA, Clothes dryer 4,000 VA, Dishwasher 1,500 VA Step 4: Add all appliance loads together: 5,100+ 4,500 + 10,000 + 4,000 + 4,000 + 1,500 = 29,100 VA Step 5: Subtract 10,000 VA from the total VA (this will be added back in later) 29,100 – 10,000 = 19,100 VA Step 6: Multiply the remainder (19,100 VA) times 40%. 19,100 X .40 = 7,640 VA Step 7: Add the 10,000 VA value from step 5 and the 7,640 VA from step 6 together to find the general load. 10,000 + 7,640 = 17,640 VA Step 8: Compare the heating load to the AC load and take the larger of the two loads AC load at 100% = 29 amps X 240 volts = 6,960 VA, Heat load at 65% = 15,000 VA X .65 = 9,750 VA (largest load) Step 9: Add the general load to the largest of the AC or heating load. General load (17,640 VA) + Heating load (9,750 VA) = Total load (27,390 VA) Step 10: Divide the total load in VA by the voltage 27,390 / 240 = 114 amps (114 amps would equal minimum panel capacity) DF 02/14/24 Symbium Project Id: project_12a71920-9f16-4dce-b994-109edbba376c Uploaded on September 25, 2024, 11:18 AM PDT PERMIT NUMBER JOB ADDRESS )252)),&(86(21/< '(3$570(17$33529$/65(48,5(' %8,/',1* PLANNING: 38%/,&:25.6: 60:': 2&)$ YES YES YES <(6 <(6 NO NO NO 12 12 INSTRUCTIONS: 1.6XEPLWVHWVRIRQO\WKHUHYLVHGVKHHWVVWDSOHGLQWRVHWV GRQRWVXEPLWFRPSOHWHVHWRISODQV ³&/28'´WKHSURSRVHGFKDQJHVRQWKHGUDZLQJV 1RWHWKHSDJHQXPEHUVRQZKLFKWKHUHYLVLRQVRFFXU 3URYLGHGHVFULSWLRQRISURSRVHGFKDQJHV DESCRIPTION OF PROPOSED CHANGES: 3$*( 1 . 2 . 3 . 4 . 5 . APPLICANT SIGNATURE DATE BUILDING REVISION FEE:727$/3/$1&+(&.(5 REVIEW TIME: $86.93/HOUR - 1 HOUR MINIMUM – Per table 3.A.1 HOURS FOR OFFICE USE ONLY APPROVED BY: DATE: &203$1<1$0( EMAIL ADDRESS CONTACT PHONE # $33/,&$17 NAME: &LW\RI6DQ-XDQ&DSLVWUDQR 'H'HYHORSPHQW6HUYLFHV'HSDUWPHQW 3DVHR$GHODQWR 6DQ-XDQ&DSLVWUDQR&$ 3KRQH (PDLOEXLOGLQJ#VDQMXDQFDSLVWUDQRRUJ ZZZVDQMXDQFDSLVWUDQRRUJEXLOGLQJ 5(9,6,21'()(55('68%0,77$/ $'',1*1(:0(3" 3&7*4*0/ 1-"/3&7*&8&3 46#.*55"-%"5& 5"3(&5%"5& YES 12 )252)),&(86(21/< Sunrun B24-0895 Melissa Foxx-Sarmiento 25566 Via Del Rey 201-560-7331 oc_permits@sunrun.com PV 1.0, 3.0 mounting hardware change PV 2.0, 2.1, 5.electrical equipment relocation Digitally signed by Melissa Foxx-Sarmiento DN: OU=Permit Coordinator, O=Sunrun, CN=Melissa Foxx-Sarmiento, E=melissa.foxx-sarmiento@ tesla.com Reason: I am the author of this document Location: Date: 2025.02.14 21:23:51-08'00' Foxit PDF Editor Version: 2024.4.0 Melissa Foxx-Sarmiento 2/14/25 ✔ 1SYMBIUM/AT 02/14/2025 02/28/2025 1 SYMBIUM/AT 02/28/2025 X XX XX CA-CITY SAN JUAN CAPISTRANO Building Department Aaron Krempasky 25566 Via Del Rey San Juan Capistrano CA USA 92675 The following revisions have been made to the Plans: 1.Racking system change 2.Battery location has been changed to back patio. Revisions can be found on the following sheets: 1.Updated on PV-1.0 2.Updated on PV-2.0 3.Updated on PV-2.1 4.Updated on PV-3.0 5.Updated on PV-5.0 Thank you for your time, Priyanka Kumari PV System Designer Sunrun Project Scope and Compliance Details This document provides approval for a revision to issued permit B24-0895. This revision was requested at February 14, 2025, 9:50 PM PST. Additional permit fees may apply. Document Guide Strikethrough indicates questions that the applicant did not respond affirmatively to. In these instances, an alternative method of compliance was specified by the applicant. This document is color-coded to show the type of changes made in this revision. Yellow is used to highlight edited responses. Green is used to highlight new responses. Project Location 25571 Via Del Rey Symbium Project ID project_069bcb15-a676-48af-a05d-98cda55f8183 Description of Revisions electrical equipment relocation, mounting hardware change Rooftop Solar or Battery Storage Installation Site Ground Snow Load: 0 psf Design Wind Speed: 95 mph Extreme Annual Mean Min. Dry Bulb Temperature: 38.84 ℉ 1 Energy Storage Systems (ESS) Manufacturer or Brand: Tesla Inc. Model: 1707000-XX-Y [11.5kW] Size: 13.5 kWh Total number of units: 1 Location: On an exterior wall Not selected: This installation involves adding additional ESS units to an existing system. Additional Details for Energy Storage Systems (ESS) ESS Structural Requirements ESS installation exceeds 250 lbs. Additional details ESS is installed according to manufacturer’s installation instructions. Rooftop Photovoltaic (PV) Module Manufacturer or Brand: LONGi Green Energy Technology Co., Ltd. Model: LR5-54HABB-395M Number of modules being installed: 9 Module Specifications Max. Power (Pmax): 395 W Max. open circuit voltage (Voc): 36.81 V Source circuit current (ISC): 13.65 Amp Max. open circuit voltage (for module): 40.49 V UL-2703 fire rating: C The PV system meets the minimum required fire class rating of the roof. Array mounting system Project Scope and Compliance Details 2 Array mounting system is UL 2703 certified for bonding and grounding. Array mounting system uses UL 2703 grounding devices to bond separate exposed metal parts together or to the equipment grounding conductor. Additional array mounting system details The solar module and mounting system is rated by the manufacturer to withstand the upward force of the local wind speed and evenly distribute load into the supporting structure at the proposed maximum spacing (validated through the UL 1703 or 61730 module rating for mechanical load rating, and UL 2703 mounting system mechanical load rating). Attachment points of the mounting system are staggered. PV array is flush-mounted, i.e. parallel to the roof. Max. distance of the PV array off the roof: 6 inches Max. spacing between adjacent attachment points: 72 inches Source circuit wiring PV system circuits on buildings meet requirements for controlled conductors in CEC 690.12. All exposed PV source circuit wiring is not smaller than 10 AWG PV wire or MFG cable All PV source circuit wiring in raceway is not smaller than 10 AWG THWN-2, XHHW-2, or RHW-2 Height of source circuit wiring above roof surface: 4 inches Disconnecting means for PV systems The PV system disconnecting means meets the requirements of CEC 690.13. Additional Details for Rooftop Photovoltaic (PV) Module Additional details Is there an existing PV system installed? No Project Scope and Compliance Details 3 System size of new PV installation: 3.56 KW Total system size: 3.56 KW Weight of the PV system: 3 psf Roof 1 Slope of roof surface: 5 : 12 Roof 2 Slope of roof surface: 6 : 12 Additional Details for Roof Additional roof details Roof covering material: Asphalt (composite) shingles I understand that roof jack, roof covering and roof sheathing inspections will be required. Roof covering beyond the area of the array will require a separate roofing permit. Please verify that the individual roof structure is structurally sound There are no visually apparent disallowed rafter holes, notches and truss modifications. There are no visually apparent structural decay or un-repaired fire damage. Roof sag, measured in inches, is not more than the rafter or ridge beam length in feet divided by 20. DC-to-DC Converter 1 Existing equipment. Is this an existing DC-DC converter or optimizer?: No Manufacturer: Tesla Model: 1707000-XX-Y Number of optimizers: 5 Project Scope and Compliance Details 4 Maximum number of modules per optimizer: 1 Rated Max. Input Voltage: 550 V Min. string length: 3 Max. string length: 15 DC-to-DC Converter 2 Existing equipment. Is this an existing DC-DC converter or optimizer?: No Manufacturer: Tesla Model: 1707000-XX-Y Number of optimizers: 4 Maximum number of modules per optimizer: 1 Rated Max. Input Voltage: 550 V Min. string length: 3 Max. string length: 15 Inverter Existing equipment. Is this an existing inverter?: No Manufacturer or Brand: Tesla Inc. Model: 1707000-XX-Y [240V, 11.5kW] Inverter type: Hybrid string inverter Strings per inverter input: 2 Strings per inverter: 2 Interconnection details Method of interconnection to the electrical service: Load-side Is this inverter controlled by a Power Control System? (PCS): Yes Project Scope and Compliance Details 5 Compliance Analysis for SOLAR RESIDENTIAL ONLINE Application Permit Application Requirements ✓ Qualified Personnel The project’s contractor must possess an active business license from the City of San Juan Capistrano and an active CSLB license with at least one of the following classifications: B - General Building Contractor C-46 - Solar Contractor C-10 - Electrical Contractor Reference: CEC 690.4 ✓ AC Nameplate Rating of PV Modules As per Senate Bill 379, residential rooftop PV installations that are no larger than 38.4 KW AC nameplate rating may qualify for an express permit. Reference: Senate Bill 379 ✓ Eligible projects To be eligible for an Approval Document from Symbium, a project must involve installation of a PV module or an ESS unit. Structural PV Array Mounting Requirements ✓ Weight of the PV System The 4 psf average self-weight limit of a PV array, including its support components, is easily met by virtually all PV systems. Even glass-on-glass modules, including bifacial modules, fit within this distributed weight limit. This limit is similar to the weight of roof overlays, which were usually allowed automatically in 1990s and earlier Building Codes. Project Scope and Compliance Details 6 ✓ UL-2703 Fire Rating of the PV system The PV system meets the minimum required fire class rating of the roof. Reference: CBC 1505.9 and R 902.4 ✓ Attachment Points of the Mounting System By staying within the 4 psf distributed weight for the array, the point- loading of roof framing members is negligible. When the design snow load is 10 psf or less, staggering of attachments is not necessary since the combined load of the snow and the array is still within the point loading limits of the roof members. ✓ Maximum Spacing between Adjacent Attachment Points The standard distance between attachment points for most locations in the United States is 48 inches. This allows for snow loads up to 60 psf and wind loads as high as 150 mph. For low snow load (10 psf or less) and low wind load (120 mph or less) areas, an attachment distance of 72 inches is permitted without causing excessive loading of roof framing members. Also, these rules are contingent on the distributed weight of the array being no greater than 4 psf. ✓ Maximum Distance off the Roof Roof installations of PV arrays that are not parallel (or nearly parallel) to the roof structure present unique wind and snow loading issues that may need further review by a design professional. Most residential rooftop PV arrays are mounted between 4 inches and 6 inches off the surface of the roof and are parallel, or nearly parallel to the roof surface. A system on a flat roof will be mounted at a slight angle in most cases to prevent pooling of water on the surface of the solar panels. For parallel-to-roof arrays, the distance between the roof surface and underside of module needs to be limited to 10 inches to control wind uplift pressures and take advantage of the “Kopp factor”. Wind tunnel research (Stenabaugh et al, 2014) shows that this reduction factor is 0.80 or less for arrays up to 10 inches off the roof. ✓ Mechanical Load Rating Project Scope and Compliance Details 7 This check is to ensure that the mechanical loading of the structural rails and attachments are being applied consistently with the manufacturer’s instructions and any listing requirements. The PV modules are listed to UL 1703 or UL 61730 and the manufacturer’s instructions dictate how the module is to be supported and held in place for various mounting methods. The mounting system may or may not be listed to UL 2703 for mechanical load rating. If the UL 2703 mechanical load rating is required by the manufacturer, then the installation must comply with any limitation that this load rating requires. ✓ Wood Shake Roofs PV installations on wood shake roofs are not eligible for an express solar permit. ✓ Roof is structurally sound Rafters that fail the above criteria should not be used to support solar arrays unless they are first strengthened. Excessive roof sag can indicate an originally under-designed roof, or subsequent deterioration of a correctly designed roof. Roof sag, measured in inches, is not to exceed span, measured in feet, divided by 20. This corresponds to a dead load deflection of span L/240. Per IBC, dead plus live load deflections are not to exceed L/180, and if dead load is 10 psf and live load is in the range of 12 to 20 psf, the expected original dead load design deflection is of the order of one third to one half of L/180, that is, L/360 to L/540. Hence a larger dead load deflection of L/240 could indicate problems, warranting further investigation. ESS Electrical Code Installation Requirements ✓ UL 9540 listed ESS UL 9540 is an umbrella standard in that it includes several standards as prerequisites to fulfill the requirements in UL 9540. An ESS is defined as, “Equipment that receives energy and then provides a means to store that energy in some form for later use in order to supply electrical energy when needed”. The most common type of UL 9540 ESS utilizes a lithium-ion battery to store the energy. That lithium-ion battery must be listed to UL 1973, Standard for Stationary and Locomotive Batteries. In addition to the Project Scope and Compliance Details 8 certification for the batteries, the inverters must be certified to UL 1741, Standard for Inverters, Converters, and Controllers for use in Distributed Energy Systems. This is the same standard used for PV utility-interactive inverters that must be specifically listed and labeled for this application [CEC 690.4(B)]. Without this specific identification process for ESS, an unacceptable amount of review would be necessary to approve the equipment used in these systems. ESS that pass UL 9540 meet the basic requirement in the CRC and the CEC for an ESS. Reference: R 328.2 ✓ Installation of ESS Units ESS units must be installed according to manufacturer's installation instructions. Reference: R 328.3 ESS Residential Code Installation Requirements ✓ Limitation on Size of Individual ESS Units This requirement limits the size of an individual ESS unit to 20 kWh. One reason for this basic limitation is to put an upper bound on the amount of energy that can be stored in one enclosure. Individual enclosures are limited to 20 kWh which is consistent with the language of the 2022 CRC. Reference: R 328.5 ✓ Size and Location of ESS Units ESS shall be installed only in the following location: Detached garages and detached accessory structures. Attached garages separated from the dwelling unit living space in accordance with Section R302.6. Outdoors or on the exterior side of exterior walls located not less than 3 Project Scope and Compliance Details 9 feet (914 mm) from doors and windows directly entering the dwelling unit. Enclosed utility closets, basements, storage or utility spaces within dwelling units with finished or noncombustible walls and ceilings. Walls and ceilings of unfinished wood-framed construction shall be provided with not less than 5/8-inch (15.9 mm) Type X gypsum wallboard. The aggregate rating of the ESS shall not exceed: 40 kWh within utility closets, basements and storage or utility spaces. 80 kWh in attached or detached garages and detached accessory structures. 80 kWh on exterior walls. 80 kWh outdoors on the ground. Reference: R 302.6 PV System Electrical Code Installation Requirements ✓ Grounding and bonding of array mounting system This requirement is to simplify the process of ensuring that the exposed metal of a PV array is well-grounded. UL 2703 has numerous mounting system products on the market that are compatible with many of the PV modules on the market. One key aspect of these listings is that UL2703 certification for a particular mounting system is specific for the PV modules to which it has been evaluated. Generally, the specific type or family of PV module from a specific manufacturer is provided with the installation instructions to show to which PV module products the mounting system has been evaluated. Alternatively, it is possible to install a PV array mounting system that is not fully listed to UL 2703. In this case, each separate exposed metal part would need to have a UL 2703 listed bonding device attached to it for it to be bonded to adjacent metal parts 690.43 [2022 CEC] or a UL 2703 listed bonding device to connect the metal to the EGC. The only exposed metal Project Scope and Compliance Details 10 parts not specifically required to be grounded are the roof attachments that attach the mounting system to the roof. These roof attachments and flashings are not likely to be energized and are often not exposed. The roof attachments are treated in a similar way that other mechanical fittings are treated in the CEC. The definition in Article 100 of fitting in the CEC is as follows: “Fitting. An accessory such as a locknut, bushing, or other part of a wiring system that is intended primarily to perform a mechanical rather than an electrical function.” Reference: CEC 690.43 ✓ Requirements for Controlled Conductors The 2022 CEC requires that PV system conductors on buildings be controlled to a safer condition when a rapid shutdown switch is operated. The controlled conductors outside 1 foot from the array must be shutdown to below 30 volts within 30 seconds and PV array wiring within the array be controlled to a safer condition when in rapid shutdown mode. Conductors in the array can meet the requirement by segmenting to 80 volt sections within 30 seconds or meet either of the other two requirements in 690.12(B)(2). As of 2021, a new array listing process is available called PV Hazard Control (UL 3741). This new process allows array systems to be evaluated and meet the requirements with the PV array as outlined in 690.12(B)(2)(1) and 690.12(B)(2)(a) [2022 CEC]. Reference: CEC 690.12 ✓ Field Installed PV Array Wiring This requirement is to simplify PV array wiring. Residential PV system wiring can be reduced to two main categories: (a) exposed string wiring is 12 AWG PV Wire [CEC 690.31(C)(1)]; and, (b) PV source circuit wiring is 12 AWG THWN-2, XHHW-2, or RHW-2. These simple rules work for any PV system with four source circuits or less using PV modules with a rated short circuit current of no greater than 12.8 amps. Since the highest ISC for most PV modules commonly available are less than Project Scope and Compliance Details 11 12.8 amps, 12 AWG conductors will work for these modules regardless of location in the U.S. as long as there are no more than 9 current carrying conductors in the conduit and the conduit is at least 7/8 inches above the roof surface. For those PV modules with an ISC above 12.8 amps, 10 AWG conductors must be used. Reference: CEC 690.31(c) and CEC 310.15(b)(3)(c) ✓ Disconnecting Means The 2022 CEC requires that the PV system disconnecting means separates the PV system from all other systems in a building. Details in CEC 690.13(E) list the characteristics of a PV disconnect. Most commonly a PV system disconnecting means is a switch or circuit breaker. This switch or circuit breaker is marked “PV System Disconnect”, and must be installed in a readily accessible location CEC 690.13(A). Reference: CEC 690.13(a) ✓ Equipment is rated for the maximum DC voltage applied. This requirement addresses the need to check to make sure that all equipment that is connected together on the DC side of a PV system is properly configured to prevent equipment from having the DC voltage limits exceeded. Reference: CEC 690.7 ✓ Maximum Number of Series Strings per Inverter This requirement is to limit the number of circuits to those configurations that are common for current residential PV systems. Most string inverters today have two, three, or four separate DC inputs. By limiting the number of strings for each input to one or two, no string fusing is necessary. This greatly simplifies the installation process and keeps it consistent with current practice. By limiting the overall input to the inverter to no more than four series strings, this ensures that the conduit connected to an inverter will have no more than 8 current-carrying conductors, upon which the conductor sizing in this guide is based. If 10 - 20 current-carrying Project Scope and Compliance Details 12 conductors are in the exposed conduit, then the conduit fill correction factor is 0.5, requiring 10 AWG conductors for PV source circuit wiring in the raceway. ✓ DC-to-DC Converters are installed according to manufacturer's installation instructions This requirement addresses the need to check to make sure that the installed DC-to-DC Converters meet the datasheet specifications for minimum and maximum string lengths. ✓ The PV array and inverters are correctly configured for safe operation This requirement addresses the need to ensure that: Sufficient number of inverter strings, microinverters, or optimizers are available for the installed PV modules. The maximum number of PV modules that can be connected to a string inverter equals the number of inverter strings times the maxmimum number of modules per string. The maximum number of PV modules that can be connected to a microinverters equals the number of microinverters times the maximum number of modules per microinverter. The maximum number of PV modules that can be connected to optimizers equals the number of optimizers. Sufficient number of microinverter circuits are configured as needed. PV and ESS Electrical Code Interconnection Requirements ✓ Inverter Installation The inverter installation should meet the requirements of Article 705. Reference: CEC Article 705 Project Scope and Compliance Details 13 City of San Juan Capistrano Inspection Checklist This document provides an updated checklist for a revision to issued permit B24-0895. This revision was requested at February 14, 2025, 9:50 PM PST. electrical equipment relocation, mounting hardware change Project Location 25571 Via Del Rey Symbium Project ID project_069bcb15-a676-48af-a05d-98cda55f8183 Scope of Work Install 9 PV modules 3.56KW; Install 1 ESS unit General All work done in a neat and workmanlike manner. [CEC 110.12] Equipment (e.g., ESS units, battery units, inverters, disconnects) is installed, listed, and labeled according to the submitted plan and manufacturers’ instructions. ESS units no greater than 20 kWh each. ESS units are spaced according to UL 9540 listing or with 3 feet spacing between units and between units and doors or windows entering the dwelling unit. ESS maximums are followed (40 kWh inside dwelling or 80 kWh in garage and elsewhere). Module manufacturer, make, model, and number of modules match 1 the submitted plans. [CBC 107.4] DC PV modules are listed to UL 1703. AC modules are listed to UL 1703 and UL 1741. Inverters are listed to UL 1741. [CEC 690.4, CRC R324.3.1] Modules are attached to the mounting structure according to the manufacturer’s instructions and the submitted plans. [CEC 110.3(B), CRC R324.3] Roof penetrations/attachments are properly flashed/sealed. [CRC R903, R324.4.3] System operating at 80 volts or greater is protected by listed dc arc fault protection. [CEC 690.11] Rooftop-mounted PV panels and modules have the proper fire classification rating. [CRC R324.4.2] Roofs with slopes greater than 2:12 have solar panel layouts with access pathways that comply with submitted roof plan. Unless otherwise approved by the fire service, the following shall apply. At least two 3-foot wide access pathways from the eave to the ridge with at least one of these pathways on the street or driveway side of the house. [CRC R324.6.1]. Panels/modules are located no higher than 18 inches from the top of the ridge where the PV array is less than 33% of the roof area or 66% of the roof area for sprinklered homes. For PV arrays greater than those allowed for an 18 inch ridge setback, a 3-foot space to the ridge is required. [CRC R324.6.2] Electrical Requirements Bonding and Grounding Grounding/bonding of ESS units, battery units, inverters, conduit and other electrical equipment according to the CEC and manufacturer’s instructions. A grounding electrode system is installed. [CEC 690.47] City of San Juan Capistrano Inspection Checklist 2 Modules and support structures are bonded and grounded in accordance with the manufacturer’s installation instructions with products certified to UL 2703. [CEC 690.43, 110.3(B)] Properly sized equipment grounding conductor is routed with the circuit conductors. [CEC 690.45] Grounding electrode conductors are properly connected. [CEC 690.47] Bonding fittings are used for ferrous metal conduits enclosing grounding electrode conductors. [CEC 250.64(E)] Conductors Conduit and other wiring methods installation according to the CEC and the submitted plan. Conductors, cables, and conduit types, sizes, and markings according to the submitted plan. Exposed single conductor cables are type USE-2 or PV Wire. [CEC 690.31(C)(1)] Conduit wiring is 90°C, wet-rated type RHW-2, THWN-2, or XHHW-2. [CEC 310.15] Only solidly grounded conductors marked white or gray (only ac neutral typically) [CEC 200.6] Open conductors are supported, secured, and protected. [CEC 334.30, 338.12(A)(3)] Cables are not in contact with the roof surface. [CEC 334.30] DC conductors inside a building are in a metal raceway or MC metal- clad cable that complies with 250.118(10), or metal enclosures. [CEC 690.31(G)] Where installed across ceiling or floor joists, Flexible metal conduit (FMC) smaller than 3/4 inches or Type MC cable smaller than 1 inch in diameter, containing PV system dc circuits, shall be protected by City of San Juan Capistrano Inspection Checklist 3 guard strips. [CEC 690.31(G)(2)]. For underground conductor installations, the burial depth is appropriate and warning tape is in place. [CEC 300.5(D)(3) & Table 300.5] Aluminum is not placed in direct contact with concrete. [CEC 250.120(B), 110.11] PV system conductors and premises wiring are separated. [CEC 690.31(B)] PV system conductors are grouped and identified. [CEC 690.31(B)] Overcurrent Protection Overcurrent protection devices are provided per the submitted plans. [CEC 690.9(A)] Overcurrent protection devices (OCPD) in PV system dc circuits are listed for use in PV systems. [CEC 690.9(B)] Combiner box, where used, is listed to UL 1741. [CEC 690.4(B)] Inverter output circuit breaker is located at opposite end of bus from utility supply at load center and/or service panelboard. If panel is center-fed, inverter output circuit breaker can be at either end of busbar [CEC 705.12(B)] (not required if the sum of the inverter and utility supply circuit breakers is less than or equal to the panelboard bus rating). Disconnects Disconnects are installed according to the submitted plan and properly located as required by the CEC. Disconnects used in DC circuits are listed for DC circuits. [CEC 110.3] Isolation devices are installed as required for PV equipment. [CEC 690.15] City of San Juan Capistrano Inspection Checklist 4 Load-break equipment disconnects are installed on all inverter and charge controller input circuits greater than 30 amps. [CEC 690.15] Where connectors are used as disconnecting means, they meet the ratings of the equipment to which they are connected. [CEC 690.33(E) & 690.15] A PV system disconnecting means, according to 690.13, provides disconnection of PV conductors from other conductors in the building. [CEC 690.13 Interconnection Requirements For grid-connected systems, documentation is provided to show that ESS meets utility interconnection requirements. PV system electrical interconnection point complies with the submitted plan. PV Modules and Array DC modules are properly marked and labeled. [CEC 110.3, 690.51] AC modules are properly marked and labeled. [CEC 110.3, 690.52] PV modules are in good condition (i.e., no broken glass or cells, no discoloration, frames not damaged, etc.). [CEC 110.12(B)] Maximum PV voltage of 600 volts for one- and two-family dwellings. [CEC 690.7] A rapid shutdown system is installed according to the submitted plan [CEC 690.12]. PV Source/Output Circuit Cable Management Cables are secured by staples, cable ties, straps, hangers or similar fittings at intervals that do not exceed 4.5 feet. [CEC 334.30, 338.12(A)(3)] City of San Juan Capistrano Inspection Checklist 5 Cables are secured within 12 inches of each box, cabinet, conduit body or other termination. [CEC 334.30, 338.12(A)(3)] Cable closely follows the surface of the building finish or of the running boards. [CEC 690.31(G)] Electrical Connections Crimp terminals are listed and installed using a listed tool specified for use in crimping those specific crimps. [CEC 110.14] Pressure terminals are listed for the environment and tightened to manufacturer recommended torque specifications. [CEC 110.11, 110.14] Connectors are listed for the voltage of the system and have appropriate temperature and ampere ratings. [CEC 110.14] Twist-on wire connectors are listed for the environment (i.e., wet, damp, direct burial, etc.) and installed per manufacturer’s instructions. [CEC 110.11, 110.14, 300.5(B)] Power distribution blocks are listed. [CEC 690.4, 314.28(E)] Terminals containing more than one conductor are listed for multiple conductors. [CEC 110.14(A)] Connectors and terminals used other than class B and C stranded conductors (fine stranded conductors) are listed and identified for use with specific conductor class or classes. [CEC 110.14(A)] Connectors that are readily accessible and over 30 volts require a tool for opening. [CEC 690.33(C)] All connectors are properly installed, fully engaged, and secure. [CEC 110.3(B), 110.12] Inverters Point of connection is at a dedicated breaker or disconnect (no loads). [CEC 705.12(B)(1)] City of San Juan Capistrano Inspection Checklist 6 Where a back-fed breaker is used as a utility interconnection means, the breaker is not marked “line and load.” [CEC 705.12(B)(4)] Any required barrier is installed between the ac, dc, or data wiring. [CEC 110.3(B), 110.27] Signs and Labels All interior and exterior dc conduit, enclosures, raceways, cable assemblies, junction boxes, combiner boxes and disconnects are marked. [CEC 690.31(G)(3), 690.31(G)(4), 690.53] The markings on the conduits, raceways and cable assemblies are every 10 feet, within one foot of all turns or bends and within one foot above and below all penetrations of roof/ceiling assemblies, walls and barriers. [CEC 690.31(G)(3), 690.31(G)(4)] The markings say “WARNING: PHOTOVOLTAIC POWER SOURCE” and have 3/8-inch (9.5 mm) minimum-sized white letters on a red background. The signs are made of reflective weather resistant material. [CEC 690.31(G)(3) & (G)(4)] Marking is placed adjacent to the main service disconnect in a location clearly visible from where the disconnect is operated. [CEC 705.10] Required labels shall be permanent and suitable for the environment. The labels in Table 1 are required where applicable. ESS Installation Requirements Access and working space for ESS equipment such as ESS units, battery units, inverters, disconnecting means, and panelboards [CEC 110.26]. City of San Juan Capistrano Inspection Checklist 7