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HomeMy WebLinkAboutSolar App Approval Documents Inspection Checklist Address: 168 Earthwood Ln San Luis Obispo, CA 93401 Approval ID: SA20230823-2142-233-1576-A AHJ: City of San Luis Obispo, CA Scope of work: INSTALLATION OF ROOF MOUNTED PV SYSTEM - 4.46KW (11 PANELS) - LOT 62 General Guidelines The installer shall follow the manufacturer's instructions for all installed equipment and shall have them available at the time of inspection. All wire sizes shown are a minimum, unless indicated otherwise, and the installer may upsize them at their discretion. All OCPD ratings shown must match the inspection checklist and be installed per the equipment manufacturer's instructions, any ratings that do not match the inspection checklist are valid reasons for inspection failure. Conduit sizing to be confirmed at time of inspection. Contractor to provide conduit fill calculations where requested by inspector Where distribution equipment, such as the main service panel or subpanel buses, are fed simultaneously by a primary source(s) of electricity and one or more other power sources, interconnection shall have a method of compliance at each panel board with both a primary source and other power source(s). Main Service Panel Equipment Pass If grounding electrode is rod, pipe or plate, then supplemental electrode is properly installed. Exception: If a single rod, pipe, or plate grounding electrode has a resistance to earth of 25 ohms or less, the supplemental electrode shall not be required. EGC is installed ensuring continuity to all system components and finally to grounding electrode. Single Phase Grid Voltage 240 V Busbar 1 Pass Existing Main Service Panel Generation sources are connected directly to the Existing Main Service Panel Existing Main Service Panel busbar ampere rating 225 A Rating of the OCPD protecting the Existing Main Service Panel 200 A Backfeed breakers are at opposite load ends of the panel. For center fed panels, backfeed breakers are on one side of main breaker and not both in the panel. Busbar 2 Pass PV Combiner Panel PV Combiner Panel busbar ampere rating 100 A Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 1/30 NEC 2020 PV (rev_k) The length of the section of the PV Combiner Panel feeders that is inside a raceway is less than or equal to 2 feet Conductor gauge for the PV Combiner Panel feeders 10 Raceway size for the PV Combiner Panel feeders is compliant with 300.17 and Chapter 9 Yes Busbar 2 Pass Equipment: Point of Connection Pass Utility Service Rating 225 A Equipment Point of Interconnection Pass All power production inverter outputs have the same point of connection. Connected equipment is within line of sight and closer than 10ft to the point of interconnection or a disconnect/isolation means are installed. There is no existing Utility interactive power production source connected to the home’s electric service. - Only the utility interactive power production sources and/or photovoltaic modules specified on this inspection checklist list are present on site. DC and AC conductors are copper, Class B or Class C, and THWN-2, NM or PV Wire, or they are a jacketed multiconductor cable assembly listed and identified for the application. All power terminals are rated to 75°C or greater, labeled for use with Copper Class B or Class C wires, and accept at least 8 AWG wire. Conductors are properly terminated and wired according to the code. Where Equipment Grounding Conductors (EGC) or Grounding Electrode Conductors (GEC) are not routed with circuit conductors, they are a minimum of 6 AWG or they are protected from physical damage There is a minimum working clearance according to the code; for all components that may require service, the standing area of the workspace shall not contain obstructions, abrupt changes in grade, or irregularities. Installed equipment and OCPDs are either rated to 22kAic or listed series rated or protected by sufficient wire length to reduce the AFC to less than 10kA Inverter Pass Inverter architecture:Microinverters EGC Wire Size Inverter 1 12 AWG Overcurrent Protective Device rating for each branch circuit of microinverters or AC Module 20 AMP AC Wire size Inverter 1 12 AWG Maximum number of THWN-2 conductors in a PV inverter AC output circuit raceway, excluding any equipment grounding conductors.2 Inverter 1 model number IQ7HS-66-M-US [240V] Inverter 1 manufacturer Enphase Energy Inc. Quantity of modules accepted by the microinverter 1 AC NM Wire size Inverter 1 12 AWG Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 2/30 NEC 2020 PV (rev_k) PV inverter maximum input DC open circuit voltage (Voc) on the equipment label 59 V PV inverter maximum input DC short circuit current (Isc) on the equipment label 15 A Presence of Rapid Shutdown switch label per Fire Bulletin NM cable is installed for inverter output circuits in locations and uses according to the Code. Inverter Pass Roof and PV Array Pass The system will be installed on a permitted structure Racking System Model Number InvisiMount Racking System Manufacturer SunPower The module and racking system shall be installed per the racking manufacturer's installation instructions regarding grounding and bonding, fire, and load ratings Yes Attachment points of the mounting system are staggered Yes Maximum spacing in inches between adjacent attachment points of the mounting system 48" Roof penetration sealant method has been installed per the manufacturers instructions. The distance from the lowest point of the module to the roof surface does not exceed 4 in The roof structure appears to be structurally sound, without signs of alterations or significant structural deterioration or sagging. Quantity and spacing of structural attachments match the installation instructions per manufacturer. Array conductors are secured and supported. Installed so as not to damage the cable, at intervals not exceeding 1.4 m (4.5 ft) and within 300 mm (12 in.) of every cable entry into enclosures such as outlet boxes, junction boxes, cabinets, or fittings. PV Module model number Q.PEAK DUO BLK ML- G10+ 405 PV Module manufacturer Hanwha Q CELLS PV Module quantity 11 MLPE equipment listed as PVRSS or PVRSE installed on each module.Yes All rooftop conduits are mounted at least 7/8” above the roof surface. All conductors installed without raceway are listed as PV Wire, USE-2 or Type distributed generation (DG) cable Roof Plane 1 Pass Pitch 5/12 Roof Covering Asphalt or composition shingles Number of coverings of comp shingle 1 Fire Pass Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 3/30 NEC 2020 PV (rev_k) The home has sprinklers.Yes Percentage of the Roof with a Solar Array 19.65% Fire Pathways, venting and access in accordance with the SolarAPP Fire Bulletin and/or the AHJ requirements therein Disconnecting Means are in compliance with the SolarAPP Fire Bulletin Signage, Placards, Directories and Markings in accordance with the SolarAPP Fire Bulletin The installation is in compliance with the AHJ Fire Bulletin Appendix Confirmed Maximum AC operating current in labels 17.6 A Maximum AC operating voltage in labels 240 V Fire Pass Corrections Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 4/30 NEC 2020 PV (rev_k) SolarAPP+ Fire Bulletin Disconnecting Means SolarAPP+ Fire Bulletin PV System PV system disconnecting means shall be provided in accordance with the 2020 National Electrical Code® (NEC), NFPA 70.(R) [690.13] A Rapid Shutdown switch shall be provided at a readily accessible location outside the building in accordance with the 2020 National Electrical Code® (NEC), NFPA 70.® [690.12(C)] Signs, Placards, Directories, and Markings Guidance SolarAPP+ Fire Bulletin General All labeling shall comply with Section 324 of the 2021 International Residential Code and Articles 690 and 705 of the 2020 National Electrical Code® (NEC), NFPA 70 All labeling shall comply with [NEC 110.21 (B)] Rapid Shutdown Label Buildings with more than one rapid shutdown type: A detailed plan view diagram showing each PV system and a dotted line around areas that remain energized after the rapid shutdown switch is operated. [NEC 690.56(C)] Rapid Shutdown (PV Hazard Control) switch: This switch shall have a label not greater than 3 feet from the switch that states the following: RAPID SHUTDOWN SWITCH FOR SOLAR PV SYSTEM [NEC 690.56(C)(1)] Roof Access, Egress, and Ventilation SolarAPP+ Fire Bulletin General Access and minimum spacing shall be provided for access to specific areas of the roof, emergency egress from the roof and opportunities for smoke ventilation in accordance with the 2021 International Residential Code [IRC 324.6] References: Ridge Setbacks - [IRC R324.6.2] Sprinklered Occupancies - [IRC R324.6.2.1] Pathways - [IRC 324.6.1] Emergency escape and rescue openings - [IRC R324.6.3] Exceptions: Detached, non-inhabitable structures [IRC R324.6 Ex. 1] Low-slope roofs with pitch of less than or equal to 2:12; this exception may not be valid depending on the jurisdiction. [IRC R324.6 Ex. 3] Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 5/30 NEC 2020 PV (rev_k) BIPV systems listed and labeled in accordance with Section 690.12(B)(2) of NFPA 70, where the removal or cutting away of portions of the BIPV system during fire-fighting operations has been determined to not expose a fire fighter to electrical shock hazards. [IRC R324.6 Ex. 4] Carbon Monoxide, Smoke & Heat Detectors SolarAPP+ Fire Bulletin Guidance: Where required, Carbon Monoxide and smoke detectors shall be provided in accordance with the code or an Affidavit has been provided by the customer. 2021 International Residential Code. [R314, R315] Fire Classification SolarAPP+ Fire Bulletin PV System Rooftop-mounted PV systems shall have the same fire classification as the roof assembly required in 2021 International Residential Code. [R902.4; R324.4.2] Building-integrated photovoltaic products installed as the roof covering shall be tested, listed, and labeled for fire classification. [IRC R902.3, R324.5.2] Building-integrated photovoltaic products installed as the roof covering shall comply with the minimum requirements for fire classification set by the jurisdiction. [IRC R902.1] Product Certifications SolarAPP+ Fire Bulletin PV System PV panels and modules shall be listed and labeled to UL 1703 and/or both UL 61730-1 and UL 61730-2 [NEC 690.4(B)][IRC R324.3.1] Inverters shall be listed and labeled to UL 1741 [NEC 690.4(B)][IRC R324.3.1] Hazard Control System Hazard control system shall be listed and labeled to UL 3741 [NEC 90.7; 110.3(C); 690.4(B); 690.12(B)(2)(1); 690.12(D)] Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 6/30 NEC 2020 PV (rev_k) Signs, Placards, Directories, and Markings SolarAPP+ Fire Bulletin Service Disconnect SOLAR PV SYSTEM EQUIPPED WITH RAPID SHUTDOWN TURN RAPID SHUTDOWN SWITCH TO THE "OFF" POSITION TO SHUT DOWN PV SYSTEM AND REDUCE SHOCK HAZARD IN ARRAY. Simple Diagram Here Location: At each service equipment location to which the PV systems are connected. Code: [NEC 690.56(C)] RSD Initiation Device RAPID SHUTDOWN SWITCH FOR SOLAR PV SYSTEM Location: Rapid shutdown initiation device. Code: [NEC 690.56(C)(2)] Point of Interconnection CAUTION: MULTIPLE SOURCES OF POWER (LAYOUT OR DESCRIPTION) Location: Service location or approved readily accessible location Code: [NEC 705.10] WARNING: DUAL POWER SOURCE SECOND SOURCE IS PV SYSTEM Location: Electrical Equipment containing overcurrent devices in circuits supplying power to a busbar or conductor supplied from multiple sources Code: [NEC 705.12 (C)] WARNING: POWER SOURCE OUTPUT CONNECTION - DO NOT RELOCATE THIS OVERCURRENT DEVICE WARNING: THIS EQUIPMENT FED BY MULTIPLE SOURCES. TOTAL RATING OF ALL OVERCURRENT DEVICES EXCLUDING MAIN SUPPLY OVERCURRENT DEVICE, SHALL NOT EXCEED AMPACITY OF BUSBAR Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 7/30 NEC 2020 PV (rev_k) Location: At back-feed breaker if using 120% rule (if applicable) Code: [NEC 705.12(B)(3)(2)] Location: At distribution equipment adjacent to the back-fed breaker from the power source when using this "sum of breakers" code compliance rule. Code: [NEC 705.12(B)(3)(3)] PHOTOVOLTAIC POINT OF INTERCONNECTION MAXIMUM AC OPERATING CURRENT: MAXIMUM AC OPERATING VOLTAGE: Location: All interactive system(s) points of interconnection. Code: [NEC 690.54] DC Circuit Raceways and Enclosures PHOTOVOLTAIC POWER SOURCE Location: Unless located and arranged so the purpose is evident, labels will be required for DC Circuit Raceways and Enclosures, conduit, and combiner/junction boxes. Code: [NEC 690.31(D)(2)] PV System Disconnect WARNING: ELECTRIC SHOCK HAZARD TERMINALS ON LINE AND LOAD SIDES MAY BE ENERGIZED IN THE OPEN POSITION Location: DC Disconnecting Means where terminals on both line and load side may remain energized. Example language or equivalent. Code: [NEC 690.13(B)] PV SYSTEM DISCONNECT Location: Each PV System Disconnect (May be AC or DC) Code: [NEC 690.13(B)] DC String Inverters Equipment Disconnects PHOTOVOLTAIC DC DISCONNECT Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 8/30 NEC 2020 PV (rev_k) WARNING: ELECTRIC SHOCK HAZARD TERMINALS ON THE LINE AND LOAD SIDES MAY BE ENERGIZED IN THE OPEN POSITION Location: Each PV system disconnecting means where line and load may be energized in the open position Code: [NEC 690.13(B)] Location: Each PV system disconnecting means. Code: [NEC 690.13(B)] PV SYSTEM MAXIMUM VOLTAGE: Location: At each DC PV system disconnecting means. Code: [NEC 690.53] Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 9/30 NEC 2020 PV (rev_k) FIRE SAFETY CODE REQUIREMENTS Does the home have sprinkler systems?Yes Percentage of Roof Area covered with PV Total Array Area / Total Roof Area 19.65% Roof Access and Ventilation Diagrams Fire Safety Ridge Setbacks PV Less Than 33% Roof Area (66% for homes with sprinkler systems) or per AHJ appendix. Emergency Escape & Rescue Opening Minimum 3’ Emergency Escape Pathway Hips and Valley Setbacks PV Less Than 33% Roof Area - Street Access (66% for homes with sprinkler systems) or per AHJ appendix. PV Less Than 33% Roof Area - Driveway Access (66% for homes with sprinkler systems) or per AHJ appendix. Powered by TCPDF (www.tcpdf.org) Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 10/30 NEC 2020 PV (rev_k) Intentionally Blank Uploaded Datasheet - 2142-fire-bulletin-appendix.pdf Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 11/30 NEC 2020 PV (rev_k) INPUTS Permit Details [80.19(H) ; R105.3] GENERAL Project Information Project Title Avila Ranch - Lot 62 - 168 Earthwood Lane Address 168 Earthwood Ln San Luis Obispo, CA 93401 Homeowner's full name WCP DEVELOPERS, LLC (WATHEN-CASTANOS) Confirm that you have verified the homeowner's information and right to install on the property. Confirmed AHJ City of San Luis Obispo, CA Project Type PV Code Cycle 2020/2021 Scope of Work INSTALLATION OF ROOF MOUNTED PV SYSTEM - 4.46KW (11 PANELS) - LOT 62 PV System Size AC (kW)4.224 PV System Size DC (kW)4.455 kW General Confirm you have reviewed SolarAPP eligibility:Yes Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 12/30 NEC 2020 PV (rev_k) General The system will be installed on a permitted structure 1 Inspection Guidelines Where distribution equipment, such as the main service panel or subpanel buses, are fed simultaneously by a primary source(s) of electricity and one or more other power sources, interconnection shall have a method of compliance at each panel board with both a primary source and other power source(s). Contractor Information Installation Applicability and Compliance All work will comply with the 2020 National Electrical Code (NFPA 70), the International Code Council 2021 I-Codes, Minimum Design Loads and Associated Criteria for Buildings and Other Structures (ASCE/SEI7-16), UL Standards, Manufacturer's instructions, and Municipal requirements. State License Type state Number 890895 City Business License Type city Number 111365 Inspection Guidelines The installer shall follow the manufacturer's instructions for all installed equipment and shall have them available at the time of inspection. All wire sizes shown are a minimum, unless indicated otherwise, and the installer may upsize them at their discretion. Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 13/30 NEC 2020 PV (rev_k) All OCPD ratings shown must match the inspection checklist and be installed per the equipment manufacturer's instructions, any ratings that do not match the inspection checklist are valid reasons for inspection failure. Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 14/30 NEC 2020 PV (rev_k) FIRE I hereby affirm that I will comply with all requirements and guidelines as set out by the SolarAPP Fire Bulletin. Confirmed I hereby affirm that I will comply with all requirements and guidelines as set out by the AHJ Fire Bulletin Appendix Confirmed Does the home have sprinkler systems?Yes What is the total array area?227.34 sqft Total roof area 1157 sqft Percentage of Roof Area covered with PV Total Array Area / Total Roof Area 19.65% See Fire Setback Diagram attached.Less Than 33/66 Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 15/30 NEC 2020 PV (rev_k) STRUCTURAL DETAILS General The weight of the PV system in lbs/sq ft [IRC R301.4]2.4 psf The ground snow load is [IRC Table R301.2] [IRC Fig R301.2(3) R301.2(4)]0 lb/sqft Proposed maximum spacing in inches between adjacent attachment points of the mounting system 48" Will attachment points of the mounting system be staggered?Yes The number of roof surfaces at different slopes and/or orientations that will be used for installation are: Note: 1 means all roofs used have the same orientation. 1 Type of mounting for the PV system Flush mount Mounting Planes Mounting Plane Type 1 Maximum distance from the lowest point of the module to the roof 4" The current roof covering is [IRC Section R905]Asphalt or composition shingles The number of comp shingle layers that are currently present is 1 The pitch of the roof surface is [IRC Section R905]5/12 Wind Speed Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 16/30 NEC 2020 PV (rev_k) Is the solar module and mounting system rated by the manufacturer to withstand the upward force of the local wind speed (110 MPH) and evenly distribute load into the supporting structure at the proposed maximum spacing, and confirmed in UL 1703 or 61730 (Part 1 & 2), and 2703 listings? [IRC R324.4.1.2; R324.3.1] Yes Roof Condition Does the roof structure appear to be structurally sound, without signs of alterations or significant structural deterioration or sagging? Yes Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 17/30 NEC 2020 PV (rev_k) ELECTRICAL DETAILS Equipment Inverter 1 What is the maximum fuse rating allowed on Inverter 1?20 A Inverter 1 Model Number IQ7HS-66-M-US [240V] Datasheet for Inverter 1: See attached. [NEC 90.7; 110.3(C)][IRC R106.1]1686953268688-I9-Enphase microinverter specs.pdf Inverter 1 Manufacturer:Enphase Energy Inc. Is Inverter 1 UL 1741 listed? [NEC 110.3(C); 690.4(B)][IRC R324.3.1]Yes Inverter 1 Maximum Continous Output Power 0.384 kW Architecture type used for all inverters in this project Microinverters Inverter 2 Inverter 2 Maximum Continous Output Power 0 kW Modules Module 1 Model Number Q.PEAK DUO BLK ML-G10+ 405 Datasheet for Module 1: See attached. [NEC 90.7; 110.3(C)][IRC R106.1]1686953500131-I12-Qcell 405 specs.pdf Module 1 Manufacturer Hanwha Q CELLS Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 18/30 NEC 2020 PV (rev_k) Modules Is Module 1 UL 1703 or UL 61730 (Part 1 & 2) listed? [NEC 110.3(C); 690.4(B)][IRC R324.3.1] Yes Module 1 quantity 11 Module open circuit voltage with record low temperature correction 48.6 V Module short circuit current with average high temperature correction 13.96 A Is the PV module bifacial?No Module fire rating type 2 Racking System Racking System Model Number InvisiMount Racking System Manufacturer SunPower Datasheet for Racking System: See attached. [NEC 90.7; 110.3(C)][IRC R106.1]1684268173114-I15-SPWR Invisimount Specs.pdf Is the Racking System UL 2703 listed for grounding and bonding with the PV module models specified in this SolarAPP project? [NEC 90.7; 110.3(C); 690.43(A)][IRC R324.4.2; R902.4] Yes The combination of modules and racking system shall have the same fire classification as the roof assembly. [IRC R324.4.2; R902.4] Yes Name/description of roof penetration sealant method to be used.falshing You have agreed to install the sealant method per the manufacturer's instructions for the means of accomplishing weather proofing [IRC R324.4.3] Yes Fire classification [IRC R324.4.2]A Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 19/30 NEC 2020 PV (rev_k) Racking System Compatible roof pitch regime Both Compatible module fire rating types 1 2 Maximum gap between the roof and the lowest point of the module 4 in Compatible Roof Types Asphalt or composition shingles Clay and concrete tile Slate and slate-type shingles Metal roof shingles or panels Mineral-surfaced roll roofing Wood shingles or Wood shakes Built-up roofs Modified bitumen roofing Thermoset/Thermoplastic single- ply roofing Sprayed polyurethane foam roofing Liquid applied roofing Rapid Shutdown The AC module, microinverter, or DCDC converter installed on each module is listed for UL 1741 or UL 3741 as PVRSS or PVRSE and used to comply with requirements for Rapid Shutdown both inside and outside the array. [NEC 690.12] Yes Site Conditions Ambient Dry Bulb Extreme Record Low Temperature (°C) [690.7(A)]-2 °C Ambient Dry Bulb Average High Temperature (°C)32 °C Single Phase Grid Voltage 240 V Installation Details Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 20/30 NEC 2020 PV (rev_k) Is there an existing Utility interactive power production source connected to the home's electric service? No Are DC and AC conductors copper, Class B or Class C, and THWN-2, NM, USE-2, PV Wire, or jacketed multiconductor cable assembly listed and identified for the application? [NEC 690.8(B); 690.31 (A) & (C), 310.15(A) and (B)] Yes NM cable is used for inverter output circuits and installed in locations and uses according to the Code [NEC 334.10] Yes Are all rooftop conduits mounted at least 7/8" above the roof surface [NEC 310.15(B)(2)]: Yes Are all power terminals rated to 75°C or greater, labeled for use with Copper Class B or Class C wires, and accept at least 8 AWG wire? [NEC 110.14] Yes Where Equipment Grounding Conductors (EGC) or Grounding Electrode Conductors (GEC) are not routed with circuit conductors, they are a minimum of 6 AWG or they are protected from physical damage [250.120(C); 250.64(B)(3)] Yes Module voltage and current DC specifications fall within allowable range of connected equipment Yes All equipment is listed for the application, rated equal to or greater than the connected overcurrent device and installed per the manufacturer's instructions. Documentation shall be provided at time of inspection. Yes Is there a utility available fault current greater than 10kA at the service?Yes Installed equipment and OCPDs are either rated to 22kAic or protected sufficient wire length to reduce the AFC to less than 10kA Yes Are all conductors installed without raceway listed as PV Wire, USE-2 or Type distributed generation (DG) cable? [NEC 690.31(C)(1)] Yes Equipment Point of Interconnection PV Source Circuit How many modules does a single microinverter accept?1 How many microinverters are you installing 11 Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 21/30 NEC 2020 PV (rev_k) Point of Connection Microinverter quantity multiplier (1 for string inverters)11 Sum of the PV inverters continous output current 17.6 A 125% of the sum of power production sources continuous output current.22 A Will all power production inverter outputs have the same point of connection?Yes At the time of inspection, it will be verified that if connected equipment is NOT within line of sight or closer than 10ft to the point of interconnection, disconnect or isolation means are installed. [NEC 690.15 (A)] Microinverter PV Source Circuit Microinverter maximum input DC open circuit voltage (Voc)59 V Microinverter maximum input DC short circuit current (Isc)15 A Inverter Output Circuit Maximum number of Microinverters in a single branch (cannot exceed 16A continuous, applicable to 20A breaker) [NEC 690.8(A)(1)(e); 690.9(B)] 6 You have selected to size all individual microinverter branch circuit OCPD to 20A Yes Calculated Inverter Branch Continuous Output current based of inverter Maximum Continuous Output Power at Unity Power Factor, Maximum number of microinverters in a single branch, and site voltage. 10 A Inverter Branch Continuous Output current used for sizing inverter output circuits [NEC 220.5(B)] 16 A See Table 3 for selection of minimum Inverter output wire size and inverter output overcurrent protection size. Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 22/30 NEC 2020 PV (rev_k) Inverter Output Circuit Calculated Branch Overcurrent Protective Device rating, from Table 3 based on the total sum of inverter continuous output current ratings of parallel connected microinverters. [NEC 705.30] 20 A Combined Inverter continuous output current 17.6 A Maximum number of THWN-2 conductors in a raceway from the solar arrays to the OCPD, excluding any equipment grounding conductors 2 Branch wire size in raceway 12 AWG Branch wire size for NM cable 12 AWG Table 3 [NEC 240.4(D); table 310.15(C)(1); table 310.15(B)(2); table 310.16; 690.8; 690.9; 705.30; 220.5 (B)] Continuous Output Current 12.5 16.5 20.5 24.5 28.5 32.5 36.5 40.5 48.5 56.5 64.5 72.5 80.5 88.5 100. 5 120. 5 140. 5 160. 5 OCPD amperage size 15 20 25 30 35 40 45 50 60 70 80 90 100 110 125 150 175 200 AWG wire size for <=3 CCC in raceway 12 12 10 10 8 8 8 8 6 4 4 3 3 2 1 1/0 2/0 3/0 AWG wire size for 4 - 6 CCC in raceway 12 12 10 10 8 8 8 8 6 4 4 3 3 2 1 1/0 2/0 3/0 AWG wire size for 7 - 9 CCC in raceway 12 12 10 10 8 8 8 6 6 4 4 3 3 2 1 2/0 3/0 4/0 NM wire 12 12 10 10 8 8 6 6 4 4 3 2 1 1 1/0 N/A N/A N/A [240.4(D); Table 310.15(B)(3)(a) ; Table 310.15(B)(2)(b) ; Table 310.15(B)(16) ; 690.8; 690.9; 705.30] Grounding & Bonding See Table 5 for selection of Equipment Grounding Conductor wire gauge. Branch - Equipment Grounding Conductor (EGC) based on overcurrent protective device 12 AWG Table 5 [NEC Table 250.122] OCPD rating (amperes)EGC wire gauge (AWG) =< 15 14 =< 20 12 =< 30 10 =< 40 10 =< 60 10 =< 100 8 =< 200 6 [Table 250.122] Electrical Work Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 23/30 NEC 2020 PV (rev_k) Main Panel Upgrades and Main Breaker Derates A Main Panel Upgrade is being performed.No A Main Breaker Derate is being performed.No Busbars Busbar quantity 2 Busbar 1 Busbar name Existing Main Service Panel Is this a combiner panel?No Is this an existing busbar?Yes Select the type of existing busbar Main Service Panel Ratings Existing Main Service Panel busbar ampere rating 225 A Rating of the OCPD protecting the Existing Main Service Panel 200 A Feeder Interconnection Are you connecting your power production sources to the Existing Main Service Panel feeders at a location other than the downstream end of the feeder? [NEC 705.12 (B) (3) (6); 705.12 (B) (1) (a); 705.12 (B) (1) (b)] N/A Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 24/30 NEC 2020 PV (rev_k) Interconnection compliance Generation sources connected on the load side of the feeder OCPD to the Existing Main Service Panel Yes Generation sources are connected directly to the Existing Main Service Panel Yes Compliance method for the Existing Main Service Panel 120% rule Busbar 2 Busbar name PV Combiner Panel Is this a combiner panel?Yes Is this an existing busbar?No Relocated Loads Panel Will you relocate one or more existing loads to the new busbar?No Combiner Panel Will you use this new busbar for combining generation sources output?Yes Do you have a dedicated OCPD protecting this busbar?No Ratings PV Combiner Panel busbar ampere rating 100 A Feeders Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 25/30 NEC 2020 PV (rev_k) Feeders The length of the section of the PV Combiner Panel feeders that is inside a raceway is less than or equal to 2 feet Yes Combined continous inverter output current on the PV Combiner Panel 17.6 A See Table 3 for the minimum OCPD rating protecting the PV Combiner Panel 25 A OCPD rating used to calculate the PV Combiner Panel feeders rating 25 A The busbar rating is equal to or higher than 125% of the combined continous inverter output current. Table 3 Continuous Output Current 12.5 16.5 20.5 24.5 28.5 32.5 36.5 40.5 48.5 56.5 64.5 72.5 80.5 88.5 100. 5 120. 5 140. 5 160. 5 OCPD amperage size 15 20 25 30 35 40 45 50 60 70 80 90 100 110 125 150 175 200 AWG wire size for <=3 CCC in raceway 12 12 10 10 8 8 8 8 6 4 4 3 3 2 1 1/0 2/0 3/0 AWG wire size for 4 - 6 CCC in raceway 12 12 10 10 8 8 8 8 6 4 4 3 3 2 1 1/0 2/0 3/0 AWG wire size for 7 - 9 CCC in raceway 12 12 10 10 8 8 8 6 6 4 4 3 3 2 1 2/0 3/0 4/0 NM wire 12 12 10 10 8 8 6 6 4 4 3 2 1 1 1/0 N/A N/A N/A [240.4(D); Table 310.15(B)(3)(a) ; Table 310.15(B)(2)(b) ; Table 310.15(B)(16) ; 690.8; 690.9; 705.30] Based on Table 23, calculated conductor gauge for the PV Combiner Panel feeders 10 Table 23 Feeder OCPD amperage size 15 20 25 30 35 40 45 50 60 70 80 90 100 110 125 150 175 200 Feeder OCP = Service rating N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 4 2 2 1 1/0 2/0 Feeder raceway < = 2 14 12 10 10 8 8 8 8 6 4 4 3 3 2 1 1/0 2/0 3/0 =<3 CCC in feeder raceway 14 12 10 10 8 8 8 8 6 4 4 3 3 2 1 1/0 2/0 3/0 4-6 CCC in feeder raceway 14 12 10 10 8 8 6 6 6 4 3 3 2 1 1/0 2/0 3/0 4/0 7-9 CCC in feeder raceway 14 12 10 8 8 6 6 6 4 3 3 2 1 1/0 2/0 3/0 4/0 Not Com patibl e [240.4(D); Table 310.15(B)(3)(a) ; Table 310.15(B)(2)(b) ; Table 310.15(B)(16) ; 690.8; 690.9; 705.30] Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 26/30 NEC 2020 PV (rev_k) Feeder Interconnection Are you connecting your power production sources to the PV Combiner Panel feeders at a location other than the downstream end of the feeder? [NEC 705.12 (B) (3) (6); 705.12 (B) (1) (a); 705.12 (B) (1) (b)] N/A Ground Equipment Grounding Conductor size for the PV Combiner Panel 10 AWG Table 5 [NEC Table 250.122] OCPD rating (amperes)EGC wire gauge (AWG) =< 15 14 =< 20 12 =< 30 10 =< 40 10 =< 60 10 =< 100 8 =< 200 6 [Table 250.122] Raceway Raceway size for the new busbar feeders is compliant with 300.17 and Chapter 9 [NEC 300.17; Chapter 9] Yes Interconnection compliance Generation sources connected on the load side of the feeder OCPD to the PV Combiner Panel N/A Interconnection compliance method at Busbar 1 120% Rule Where two sources, one a primary power source and the other another power source, are located at opposite ends of a busbar that contains loads, the sum of 125 percent of the power source(s) output circuit current and the rating of the overcurrent device protecting the busbar shall not exceed 120 percent of the ampacity of the busbar. 705.12(B)(3)(2) Service Service OCPD Location Existing Main Service Panel Service OCPD Rating 200 A Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 27/30 NEC 2020 PV (rev_k) Service OCPD is greater than 100A Utility Service Rating 225 A Point of Connection at Service Feeders Supply Side Connection Are you connecting your power production sources in a supply side connection in accordance with [NEC 705.11]? No Supported Tie-Ins The point of interconnection is at the existing subpanel No A PV Sub Panel Insert for load relocation from the main service panel to the new load center is being installed in order to create space for the backfeed breaker. No The point of interconnection is at a subpanel feeder No Main Service Panel type Regular Combiner Panel Configuration PV The busbar quantity per busbar category is aligned with the list of SolarAPP supported tie-ins. A Main Service Panel has been found in the busbar inputs. The MSP has been verified for backfeed compliance. SolarAPP Supported Tie-Ins ID 12 Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 28/30 NEC 2020 PV (rev_k) WORKERS' COMP By applying for this permit, you represent and warrant that youhave (and will have during the performance of the work) all valid approvals, certifications, and licenses required for the performance of the work for which this permit is issued, (ii) carry (and will carry during the performance of the work) all necessary insurance required by law or governmental authority in the jurisdiction and (iii) will comply with all applicable laws required in the performance of the work. Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 29/30 NEC 2020 PV (rev_k) SolarAPP PV Eligibility 09/08/2022 System New Rooftop Residential Retrofit PV Systems Installed by contractor with all licenses required by jurisdiction Each residence must have a unique utility meter Electrical Applicable National Electric Code 600V Max per DC System Size Single phase 240 V only No Aluminum Wires Must Use 600V rated PV wire (due to outer diameter > 0.24" (6.1mm)) Must use 90 deg C rated insulated wire Max 2 DC strings in parallel Max 9 current carrying conductors in a raceway Inverter output circuit conductors must be THWN-2, or listed NM Terminals must be rated to 75 deg C, labeled for use with Cu wires, and accept minimum 8 AWG wire Whenever used, the microinverters or AC Modules branch circuit overcurrent protection device must be rated for a maximum of 20A Permitted to install on up to or equal to 400A Service Permitted to install on up to or equal to 225A Service Disconnect Permitted to install on up to or equal to 225A busbars No existing PV or ESS May install only 1 module type May install up to 2 Inverters for String Inverters, up to 1 inverter type for Micro-inverters and AC modules Systems Conduit may not be Schedule 80 PVC Modules and Inverters must be listed on CEC Rapid Shutdown cannot be satisfied using the method: No exposed wiring or conductive parts [690.12(B)(2)(3)] No trenching allowed All power production inverter outputs have the same point of connection No new loads, only new monitoring loads are allowed All equipment is assumed to be non-continuous rated May install only 1 racking system type Height of rooftop conduit > = 7/8" Flat Plate PV Modules Only Structural Detached one- and two-family dwellings and townhomes not more than three stories above grade plane in height with a separate means of egress Accessory structures to one- and two-family dwellings and townhomes not more than three stories above grade plane in height Penetrations within 4 ft of the fire-rated property line on the roof of a townhome shall not be permitted Installations in multi-family structures or R-2 occupancies shall not be permitted Installations on mobile homes governed by Heath and Safety Code and/or Housing and Urban Development regulations shall not be permitted. Applicable International Residential Code PV system + hardware weight is less than or equal to 4psf No ground mounted systems No carports or non-permanent structures No modification alterations or upgrades to the structure At least 20% of each tilt-up mounted array must be contained under 2 feet above the roof Installed on a permitted structure No wood shake or wood shingle roofing Limit of 10" above the roof for pitched (>2/12) roof systems No metal roof or low-slope roof in areas with > 15psf snow load Fire Applicable International Residential Code Powered by TCPDF (www.tcpdf.org) Approval ID: SA20230823-2142-233-1576-A Reviewed for Code compliance 08-23-2023 SolarAPP+ City of San Luis Obispo, CA Page 30/30 NEC 2020 PV (rev_k)