The URL can be used to link to this page

Home My WebLink About18 - Provide an Expedited Permitting Process for Small Residential Rooftop Solar SystemsCTY OF F NEWPORT BEACH City Council Staff Report July 14, 2015 Agenda Item No. 18 TO: HONORABLE MAYOR AND MEMBERS OF THE CITY COUNCIL FROM: Kimberly Brandt, Community Development Director — (949) 644-3226, kbrandt@newportbeachca.gov PREPARED BY: Seimone Jurjis, Chief Building Official PHONE: (949) 644-3282 TITLE: An Ordinance to Provide an Expedited Permitting Process for Small Residential Rooftop Solar Systems ABSTRACT: Assembly Bill No. 2188 requires local governments to adopt an ordinance that creates a streamlined permitting process for small rooftop solar system installations on or before September 30, 2015. The law requires over-the-counter same day permit issuance, limits the number of building related inspections that may be required, and requires the streamlined process to "substantially conform" to the permitting process prescribed by the California Solar Permitting Guidebook 2015. RECOMMENDATION: a) Find this action not subject to the California Environmental Quality Act (CEQA) pursuant to Sections 15060(c)(2) (the activity will not result in a direct or reasonably indirect physical change in the environment), 15061(b)(3) (CEQA only applies to projects which have the potential for causing a significant effect on the environment), and 15060(c)(3) (the activity is not a project as defined in Section 15378) of the CEQA Guidelines, California Code of Regulations, Title 14, Chapter 3, because it has no potential for resulting in physical change to the environment, directly or indirectly; b) Conduct a public hearing; and c) Introduce Ordinance No. 2015-23, An Ordinance of the City Council of the City of Newport Beach, California, Amending Title 15 of the Newport Beach Municipal Code to Provide An Expedited, Streamlined Permitting Process for Small Residential Rooftop Solar Systems, and pass to second reading on July 28, 2015. FUNDING REQUIREMENTS: The proposed ordinance will not result in any changes to the City permit fees for small residential solar systems or create any new fees. 18-1 DISCUSSION: Consistent with Assembly Bill (AB) 2188, the attached ordinance creates a streamlined plan review and permit process for residential rooftop solar photovoltaic (PV) projects that are 10 kW or less in size, by adding Chapter 15.18 to the Newport Beach Municipal Code (Attachment A). Plan Review The Community Development staff currently provides an expedited plan review process for residential PV systems, but in order to comply with AB 2188, the following changes are also required to be incorporated into the City's plan review process: 1. Eligibility Checklist (Attachment B). This mandatory checklist will be used by City staff and applicants to determine which projects qualify for expedited permitting. 2. Standard Solar PV Structural and Electrical Plans for systems using a central/string inverter or for systems utilizing micro inverters (Attachment C). The City is to provide standard plans that are to be used by applicants; we expect that these standard plans will reduce the potential for errors and help simplify the review process. 3. Online Permit Application Information and Filing. All necessary materials are required to be on the City's website, as well as the ability for applicants to file electronic submittals of the permit application. 4. Same Day Permit Issuance. The City is required to issue permits the same day for over-the-counter applications or within one to three business days for electronic applications. Inspections Only the Building Division will inspect solar PV systems, since Fire Department inspections are not required for one- and two- family structures. Using the simplified inspection checklist contained in Attachment D, the inspector will perform only one inspection. In compliance with AB 2188, the City must schedule a building inspection within two business days of a request and provide an eight-hour inspection window. As common practice, the Building Division maintains a high level of service by providing an inspection the next business day and typically within a two-hour inspection window. Fees Charged The fees the City charges for plan review and inspection are limited by state law (Government Code Section 66015). Currently, the City conforms to state law and charges a maximum of $500 for PV systems that are less than 15 kW in size. ENVIRONMENTAL REVIEW: The recommended action is not subject to the CEQA pursuant to Sections 15060(c)(2) (the activity will not result in a direct or reasonably indirect physical change In the environment), 15061(b)(3) (CEQA only applies to projects which have the potential for causing a significant effect on the environment), and 15060 (c)(3) (the activity is not a project as defined in Section 15378) of the CEQA Guidelines, California Code of change Regulations, Title 14, Chapter 3, because it has no potential for resulting in physical change to the environment, directly or indirectly. NOTICING: Notice of this amendment was published in the Daily Pilot as an eighth page advertisement at least 10 days before the scheduled meeting, consistent with the provisions of the Municipal Code. Additionally, the item appeared on the agenda for this meeting, which was posted at City Hall and on the City website. 18-2 ATTACHMENTS: Description Attachment A - Ordinance Attachment B - Eligibility Checklist Attachment C - Structrual & Electrical Standards Plan Attachment D - Inspection Checklist 18-3 ATTACHMENT A ORDINANCE NO. 2015 - AN ORDINANCE OF THE CITY OF NEWPORT BEACH, CALIFORNIA, AMENDING TITLE 15 OF THE NEWPORT BEACH MUNICIPAL CODE TO PROVIDE AN EXPEDITED, STREAMLINED PERMITTING PROCESS FOR SMALL RESIDENTIAL ROOFTOP SOLAR SYSTEMS RECITALS WHEREAS, the City Council of the City of Newport Beach seeks to implement AB 2188 (Chapter 521, Statutes 2014) through the creation of an expedited, streamlined permitting process for small residential rooftop solar energy systems; WHEREAS, the City Council wishes to advance the use of solar energy by all of its citizens, businesses and industries; WHEREAS, the City Council seeks to meet the climate action goals set by the City and the State of California; WHEREAS, solar energy creates local jobs and economic opportunity; WHEREAS, the City Council recognizes that rooftop solar energy provides reliable energy and pricing for its residents and businesses; and WHEREAS, it is in the interest of the health, welfare and safety of the people of City of Newport Beach to provide an expedited permitting process to assure the effective deployment of solar technology. NOW, THEREFORE, the City Council of the City of Newport Beach does ordain as follows: SECTION 1: Chapter 15.18 of the Newport Beach Municipal Code is added to Title 15 to read as follows: Chapter 15.18 SOLAR SYSTEMS Sections: 15.18.010 PURPOSE 15.18.020 APPLICABILITY 15.18.030 DEFINITION 15.18.040 SOLAR ENERGY SYSTEM REQUIREMENTS 15.18.050 PROHIBITED INSTALLATION I" 15.18.060 DUTIES OF THE BUILDING DIVISION, AND CHIEF BUILDING OFFICIAL 15.18.070 PERMIT REVIEW AND INSPECTION REQUIREMENTS 15.18.010 PURPOSE The purpose of this Chapter is to adopt an expedited, streamlined solar permitting process that complies with the Solar Rights Act and AB 2188 (Chapter 521, Statutes 2014) to achieve timely and cost-effective installations of small residential rooftop solar energy systems. The provisions of this Chapter encourage the use of solar systems by removing unreasonable barriers, minimizing costs to property owners and the City, and expanding the ability of property owners to install solar energy systems. The provisions of this Chapter further allow the City to achieve these goals while protecting the public's health and safety. 15.18.020 APPLICABILITY A. This Chapter applies to the permitting of all small residential rooftop solar energy systems in the City. B. Small residential rooftop solar energy systems legally established or permitted prior to the effective date of this Chapter are not subject to the requirements of this Chapter unless physical modifications or alterations are undertaken that materially change the size, type, or components of a small rooftop energy system in such a way as to require new permitting. Routine operation and maintenance or like -kind replacements shall not require a permit. 15.18.030 Definitions A. "Association" means a nonprofit corporation or unincorporated association created for the purpose of managing a common interest development. B. "Electronic submittal" means the utilization of one (1) or more of the following: 1. Email; 2. The Internet; or 3. Facsimile. C. "Common interest development" means any of the following: 1. A community apartment project; 2. A condominium project; M 3. A planned development; or 4. A stock cooperative. D. "Reasonable restrictions" on a solar energy system are those restrictions that do not significantly increase the cost of the system or significantly decrease its efficiency or specified performance, or that allow for an alternative system of comparable cost, efficiency, and energy conservation benefits. E. 'Restrictions that do not significantly increase the cost of the system or decrease its efficiency or specified performance' means: 1. For Water Heater Systems or Solar Swimming Pool Heating Systems: an amount exceeding ten percent (10%) of the cost of the system, but in no case more than one thousand dollars ($1,000), or decreasing the efficiency of the solar energy system by an amount exceeding ten percent (10%), as originally specified and proposed. 2. For Photovoltaic Systems: an amount not to exceed one thousand dollars ($1,000) over the system cost as originally specified and proposed, or a decrease in system efficiency of an amount exceeding ten percent (10%) as originally specified and proposed. F. "Small residential rooftop solar energy system" means all of the following: 1. A solar energy system that is no larger than ten kilowatts (10kW) alternating current nameplate rating or thirty kilowatts (30kW) thermal. 2. A solar energy system that conforms to all applicable state fire, structural, electrical, and other building codes as adopted or amended by the City and all state and City and County health and safety standards. 3. A solar energy system that is installed on a single or duplex family dwelling. 4. A solar panel or module array that does not exceed the maximum legal building height as defined by the City. G. "Solar Energy System" means either of the following: 1. Any solar collector or other solar energy device whose primary purpose is to provide for the collection, storage, and distribution of solar energy for space heating, space cooling, electric generation, or water heating. 2. Any structural design feature of a building, whose primary purpose is to provide for the collection, storage, and distribution of solar energy for electricity generation, space heating or cooling, or for water heating. i H. "Specific, adverse impact" means a significant, quantifiable, direct, and unavoidable impact, based on objective, identified, and written public health or safety standards, policies, or conditions as they existed on the date the application was deemed complete. 15.18.040 SOLAR ENERGY SYSTEM REQUIREMENTS A. All solar energy systems shall meet applicable health and safety standards and requirements imposed by the state and the California Fire Code, as adopted and amended by the City. B. Solar energy systems for heating water in single-family residences and for heating water in commercial or swimming pool applications shall be certified by an accredited listing agency as defined by the California Plumbing and Mechanical Code. C. Solar energy systems for producing electricity shall meet all applicable safety and performance standards established by the California Electrical Code, the Institute of Electrical and Electronics Engineers, and accredited testing laboratories such as Underwriters Laboratories and, where applicable, rules of the Public Utilities Commission regarding safety and reliability. 15.18.050 PROHIBITED INSTALLATION It is prohibited to use electrical metallic tubing (EMT) in exposed exterior locations. 15.18.060 DUTIES OF THE BUILDING SAFETY DIVISION AND CHIEF BUILDING OFFICIAL A. All documents required for the submission of an expedited solar energy system application shall be made available on the publicly accessible City website. B. Electronic submittal of the required permit application and documents by email, the Internet, or facsimile shall be made available to all small residential rooftop solar energy system permit applicants. C. An applicant's electronic signature shall be accepted on all forms, applications, and other documents in lieu of a wet signature. D. The City shall adopt a standard plan and checklist of all requirements with which small residential rooftop solar energy systems shall comply to be eligible for expedited review. 18-7 E. The small residential rooftop solar system permit process, standard plan(s), and checklist(s) shall substantially conform to recommendations for expedited permitting, including the checklist and standard plans contained in the most current version of the California Solar Permitting Guidebook adopted by the Governor's Office of Planning and Research. F. All fees prescribed for the permitting of small residential rooftop solar energy system must comply with Government Code Section 65850.55, Government Code Section 66015, Government Code Section 66016, and State Health and Safety Code Section 17951, or any successor statutes. 15.18.070 PERMIT REVIEW AND INSPECTION REQUIREMENTS A. The Building Division shall issue a building permit or other nondiscretionary permit the same day for over-the-counter applications or within one (1) to three (3) business days for electronic applications of receipt of a complete application that meets the requirements of the approved checklist and standard plan. The Chief Building Official may require an applicant to apply for a use permit if the official finds, based on substantial evidence, that the solar energy system could have a specific, adverse impact upon the public health and safety. Such decisions may be appealed to the City Building and Fire Board of Appeals. B. Review of the application shall be limited to the Chief Building Official's review of whether the application meets local, state, and federal health and safety requirements and the City Fire Code Official's review for compliance with the California Fire Code. C. If a use permit is required, the Chief Building Official may deny an application for the use permit if the Chief Building Official makes written findings based upon substantive evidence in the record that the proposed installation would have a specific, adverse impact upon public health or safety and there is no feasible method to satisfactorily mitigate or avoid, as defined, the adverse impact. Such findings shall include the basis for the rejection of the potential feasible alternative for preventing the adverse impact. Such decisions may be appealed to the City Building and Fire Board of Appeals. D. Any condition imposed on an application shall be designed to mitigate the specific, adverse impact upon health and safety at the lowest possible cost. E. "A feasible method to satisfactorily mitigate or avoid the specific, adverse impact" includes, but is not limited to, any cost-effective method, condition, or mitigation imposed by the City on another similarly situated application in a prior successful application for a permit. The City shall use its best efforts to ensure that the selected method, condition, or mitigation meets the conditions of subparagraphs (A) and (B) of paragraph (1) of subdivision (d) of Section 714 of the Civil Code, or any successor statute, defining restrictions that do not significantly increase the cost of the system or decrease its efficiency or specified performance. F. The City shall not condition approval of an application on the approval of an association, as defined in Section 4080 of the Civil Code, or any successor statute. G. If an application is deemed incomplete, a written correction notice detailing all deficiencies in the application and any additional information or documentation required to be eligible for expedited permit issuance shall be sent to the applicant for resubmission. H. Only one (1) inspection shall be required and performed by the Building Division for small residential rooftop solar energy systems eligible for expedited review. I. The inspection shall be done in a timely manner and should include consolidated inspections. An inspection will be scheduled within two (2) business days of a request and provide an eight (8) hour inspection window. J. If a small residential rooftop solar energy system fails inspection, a subsequent inspection is authorized but need not conform to the requirements of this Chapter. Section 2: The recitals provided in this ordinance are true and correct and are incorporated into the substantive portion of this ordinance. Section 3: If any section, subsection, sentence, clause or phrase of this ordinance is for any reason held to be invalid or unconstitutional, such decision shall not affect the validity or constitutionality of the remaining portions of this ordinance. The City Council hereby declares that it would have passed this ordinance and each section, subsection, clause or phrase hereof, irrespective of the fact that any one or more sections, subsections, sentences, clauses and phrases be declared unconstitutional. Section 4: The City Council finds the introduction and adoption of this ordinance is not subject to the California Environmental Quality Act ("CEQA") pursuant to Sections 15060(c)(2) (the activity will not result in a direct or reasonably foreseeable indirect physical change in the environment) and 15060(c)(3) (the activity is not a project as defined in Section 15378) of the CEQA Guidelines, California Code of Regulations, Title 14, Chapter 3, because it has no potential for resulting in physical change to the environment, directly or indirectly. F&M Section 5: Except as expressly modified in this ordinance, all other Sections, Subsections, terms, clauses and phrases set forth in the Newport Beach Municipal Code shall remain unchanged and shall be in full force and effect. Section 6: The Mayor shall sign and the City Clerk shall attest to the passage of this ordinance. The City Clerk shall cause the ordinance to be published pursuant to City Charter Section 414, and it shall be effective thirty (30) days after its adoption. This ordinance was introduced at a regular meeting of the City Council of the City of Newport Beach held on the _ day of , 2015, and adopted on the _ day of , 2015, by the following vote, to -wit: AYES, COUNCILMEMBERS NOES, COUNCILMEMBERS ABSENT COUNCILMEMBERS MAYOR EDWARD D. SELICH ATTEST: LEILANI I. BROWN, CITY CLERK AP V D TO FORM: CITY RNEY'S OFFICE 7T ') AAR . HARP, CITY ATTORNEY Uear8, ATTACHMENT B CITY OF NEWPORT BEACH COMMUNITY DEVELOPMENT DEPARTMENT BUILDING DIVISION 100 Civic Center Drive I P.O. Box 1768 1 Newport Beach, CA 92658-8915 www.newportbeachca.gov 1 (949) 644-3200 Eligibility Checklist for Expedited Solar Photovoltaic Permitting for One- and Two -Family Dwellings GENERAL REQUIREMENTS A. System size is 10 kW AC CEC rating or less ❑ Y ❑ N B. The solar array is roof -mounted on one- or two-family dwelling or accessory structure ❑ Y ❑ N C. The solar panel/module arrays will not exceed the maximum legal building height ❑ Y ❑ N D. Solar system is utility interactive and without battery storage ❑ Y ❑ N E. Permit application is completed and attached ❑ Y ❑ N ELECTRICAL REQUIREMENTS ❑ N A. No more than four photovoltaic module strings are connected to each Maximum Power A diagram of the roof layout of all panels, modules, clear access pathways and Point Tracking (MPPT) input where source circuit fusing is included in the inverter ❑ Y ❑ N 1) No more than two strings per MPPT input where source circuit fusing is not included ❑ Y ❑ N 2) Fuses (if needed) are rated to the series fuse rating of the PV module ❑ Y ❑ N 3) No more than one noninverter-integrated DC combiner is utilized per inverter ❑ Y ❑ N B. For central inverter systems: No more than two inverters are utilized ❑ Y ❑ N C. The PV system is interconnected to a single-phase AC service panel of nominal 120/220 Vac with a bus bar rating of 225 A or less ❑ Y ❑ N D. The PV system is connected to the load side of the utility distribution equipment ❑ Y ❑ N E. A Solar PV Standard Plan and supporting documentation is completed and attached ❑ Y ❑ N STRUCTURAL REQUIREMENTS A. A completed Structural Criteria and supporting documentation is attached (if required) ❑ Y ❑ N FIRE SAFETY REQUIREMENTS A. Clear access pathways provided ❑ Y ❑ N B. Fire classification solar system is provided ❑ Y ❑ N C. All required markings and labels are provided ❑ Y ❑ N D. A diagram of the roof layout of all panels, modules, clear access pathways and approximate locations of electrical disconnecting means and roof access points is completed and attached ❑ Y ❑ N Notes: 1. These criteria are intended for expedited solar permitting process. 2. if any items are checked NO, revise design to fit within Eligibility Checklist otherwise permit application may go through standard process. 18-11 ATTACHMENT C CITY OF NEWPORT BEACH COMMUNITY DEVELOPMENT DEPARTMENT BUILDING DIVISION 100 Civic Center Drive I P.O. Box 1768 1 Newport Beach, CA 92658-8915 www.newportbeachca.gov 1 (949) 644-3200 Structural Criteria for Residential Rooftop Solar Energy Installations Use of this Document This toolkit document includes a one-page list of structural criteria for over-the-counter approval, as well as attached tables and figures that supplement the criteria. This document applies to flush -mounted solar arrays installed on the roofs of wood -framed one- and two- family dwellings. "Flush -mounted" means the modules are installed parallel to, and relatively close to, the roof surface (see the "Solar Array Check' section of the Structural Criteria for specific qualifying requirements). This list is intended to be a simple pre -installation check to gain reasonable assurance that the design of the solar array complies with the structural provisions of the 2013 California Building Code (CBC) and 2013 California Residential Code (CRC). Regional and Site Assumptions This document is based on the following regional and site assumptions: The dwelling is not in Wind Exposure D (within 200 yards of the ocean or a large coastal bay). • If in Wind Exposure B (urban, suburban or wooded areas), the dwelling may be located: - in a Special Wind Region (see Map 1) with design wind speeds between 110 and 130 mph. - on a tall hill, provided average slope is no steeper than 15%. • If in Wind Exposure C (within 500 yards of large open fields or grasslands), the dwelling is: - in a standard 110 mph design wind speed region. - not on a hill with a grade steeper than 5%. • The dwelling is not located within wind exposure "D." The contractor's visual roof audit, checking for unusual sagging or deterioration, without requiring additional measurements of existing rafters to check against span tables. The Structural Toolkit and CRC Wind Speeds The 2013 CRC contains an inconsistency related to wind speeds. Despite referencing ASCE 7-10 as its standard, the 2013 CRC's text and tables use outdated ASCE 7-05 wind speeds. Under the old ASCE 7- 05/CBC 2010, the basic design wind speed in most regions of the state was 85 mph (max. 3 second gust in 50 years). Under ASCE 7-10/CBC 2013, the design wind speed has increased to 110 mph (max. 3 second gust in 700 years). All wind speeds in the toolkit document are based on the ASCE 7-10. This is clearly stated in the caption to the state wind speed map, and in the Table 1 footnotes. This anticipates an obvious and expected correction to the CRC; otherwise the toolkit would become immediately outdated when the CRC is amended to change the base design wind speed from 85 mph to 110 mph. 18-12 Structural Technical Appendix This toolkit document is supported by a Structural Technical Appendix that describes the technical analysis behind these criteria, which are based on structural engineering principles and the California Building and Residential Codes. The Technical Appendix also provides some additional guidance to address non- conforming items, such as when an anchor layout is not based on a solar support component manufacturer's guidelines, or when a coastal site is located within 200 yards of the ocean (Exposure D). This document can be found online: http://www.opr.ca.gov/docs/Solar Structural Technical Appendix.pdf. Map 1. California Design Wind Speed Map (Ref: ASCE 7-10). The number outside the parentheses represents the design wind speed in mph. Typical design wind speed is 110 mph. The gray shaded areas on the map indicate "Special Wind Regions" where higher wind speeds may apply When the project is in a gray shaded area, contact the local building department for the design wind speed. 18-13 STRUCTURAL CRITERIA FOR RESIDENTIAL FLUSH -MOUNTED SOLAR ARRAYS 1. ROOF CHECKS A. Visual Review/Contractor's Site Audit of Existing Conditions: 1) Is the plane of the modules (panels) parallel to the plane of the roof? 1) Is the roof a single roof without a reroof overlay? ❑ Y ❑ N 2) Is the dwelling further than 200 yards from the ocean or a large coastal bay? ❑ Y ❑ N 3) Does the roof structure appear structurally sound, without signs of alterations 4 psf for photovoltaic arrays or 5 psf for solar thermal arrays? ❑ Y ❑ N or significant structural deterioration or sagging, as illustrated in Figure 1? ❑ Y ❑ N B. Roof Structure Data: tables with relevant cells circled, or web -based calculator results attached? ❑ Y ❑ N 1) Measured roof slope (e.g. 6:12): ❑ Y ❑ N :12 2) Measured rafter spacing (center -to -center): 1) Proposed anchor horizontal spacing (see Figure 2): inch 3) Type of roof framing (rafter or manufactured truss): ❑ Rafter ❑ Truss 2. SOLAR ARRAY CHECKS A. Flush -mounted Solar Array: 1) Is the plane of the modules (panels) parallel to the plane of the roof? ❑ Y ❑ N 2) Is there a 2" to 10" gap between underside of module and the roof surface? ❑ Y ❑ N 3) Modules do not overhang any roof edges (ridges, hips, gable ends, eaves)? ❑ Y ❑ N B. Do the modules plus support components weigh no more than: 4 psf for photovoltaic arrays or 5 psf for solar thermal arrays? ❑ Y ❑ N C. Does the array cover no more than half of the total roof area (all roof planes)? ❑ Y ❑ N D. Are solar support component manufacturer's project -specific completed worksheets, tables with relevant cells circled, or web -based calculator results attached? ❑ Y ❑ N E. Is a roof plan of the module and anchor layout attached? (see Figure 2) ❑ Y ❑ N F. Downward Load Check (Anchor Layout Check): 1) Proposed anchor horizontal spacing (see Figure 2): _"ft -in 2) Horizontal anchor spacing per Table 1: -"ft-in 3) Is proposed anchor horizontal spacing equal to or less than Table 1 spacing? ❑ Y ❑ N G. Wind Uplift Check (Anchor Fastener Check): 1) Anchor fastener data (see Figure 3): a. Diameter of lag screw, hanger bolt or self -drilling screw (PRE DRILLED inch ANCHOR PER NDS SPECIFICATIONS): b. Embedment depth of rafter: inch c. Number of screws per anchor (typically one): d. Are 5/16" diameter lag screws with 2.5" embedment into the rafter used, OR does the anchor fastener meet the manufacturer's guidelines? ❑ Y ❑ N 3. SUMMARY ❑ A. All items above are checked YES. No additional calculations are required. ❑ B. One or more items are checked NO. Attach project -specific drawings and calculations stamped and signed by a California -licensed civil or structural engineer. Job Address: Contractor/Installer: Signature: Date: Permit #: License # & Class: Phone #: Optional Additional Rafter Span Check Criteria [ At option of CBO, insert rows (4) to (7) below into table above after row 1.B.(3) j 1. ROOF CHECKS B. Roof Structure Data: 4) Measured rafter size (e.g. 13/4 x 33/4, not 2x4): x inch 5) Measured rafter horizontal span (see Figure 4): _ - _"ft -in 6) Horizontal rafter span per Table 2: - "ft -in 7) Is measured horizontal rafter span less than Table 2 span? ❑ Y ❑ N ❑ Truss 18-14 nrr_� Table 1. Maximum Horizontal Anchor Spacing 'MIE Roof Slope Rafter Spacing 16" o.c. 24" o.c. 32" o.c. Photovoltaic Arrays (4 psf max) Flat to 6:12 0° to 26' 5'-4" 6'-0" 5'-4" 7:12 to 12:12 27' to 450 1'-4" 2'-0" 2'-8" 13:12 to 24:12 46° to 63' 1'-4" 2'-0" 2'-8" Solar Thermal Arrays (5 psf max) Flat to 6:12 0° to 26° 4'-0" 4'-0" 5'-4" 7:12 to 12:12 27° to 45' 1'-4" 2'-0" 2'-8" 13:12 to 24:12 460 to 63° Calc. Req'd Calc. Req'd Calc. Req'd Solar support component manufacturer's guidelines may be relied upon to ensure the array above the roof is properly designed, butmanufacturer'sguidelines typically do NOT check to ensure that the roof itself can support the concentrated loads from the solar array. Table 1 assumes that the roof complied with the building code in effect at the time of construction, and places limits on anchor horizontal spacing to ensure that a roof structure is not overloaded under either downward loads or wind uplift loads. Note 4 belowlists the basic assumptions upon which this table is based Table 1 Notes: 1. Anchors are also known as "stand-offs;' "feet," "mounts" or "points of attachment:' Horizontal anchor spacing is also known as "cross -slope' or "east -west' anchor spacing (see Figure 2). 2. If anchors are staggered from row -to -row going up the roof, the anchor spacing may be twice that shown above, but no greater than 6'-0". 3. For manufactured plated wood trusses at slopes of flat to 6:12, the horizontal anchor spacing shall not exceed 4'-0" and anchors in adjacent rows shall be staggered. 4. This table is based on the following assumptions: • The roof structure conformed to building code requirements at the time it was built. • The attached list of criteria is met. • Mean roof height is not greater than 40 feet. • Roof sheathing is at least 7/16" thick oriented strand board or plywood, lx skip sheathing is acceptable. • If the dwelling is in Wind Exposure B (typical urban, suburban or wooded areas farther than 500 yards from large open fields), no more than one of the following conditions apply: - The dwelling is located in a Special Wind Region with design wind speed between 115 and 130 mph per ASCE 7-10. - The dwelling is located on the top half of a tall hill, provided average slope is less than 15%. • If the dwelling is in Wind Exposure C (within 500 yards of large open fields or grasslands), all of the following conditions apply. - Design wind speed is 110 mph or less (not in a Special Wind Region). - The dwelling is not located on the top half of a tall hill. • The solar array displaces roof live loads (temporary construction loads) that the roof was originally designed to carry. • The Structural Technical Appendix provides additional information about analysis assumptions. 18-15 Assumed Vintage Nominal Size Actual Size U Non -Tile Roof' Tile Roof' Rafter Spacing 16" o.c. 24" o.c. 32" o.c. 16" o.c. 24" o.c. 32" o.c. 2x4 1%::'x3'/:" 7'-10" 6'-4" 5'-6" C-10" 6'-0" 5'-2" Post -1960 2x6 1%z"x5'/:" 12'-4" 10'-2" 8'-9" 10'-9" 8'-9" 7'-6" 2x8 1'/z"x7'/," 16'-4" 13'-4" 11'-6" 14'-2" 11'-6" 10'-0" 2x10 1 % x 9 1/4 20'-0" 17'-0" 14'-9" 17'-10" 14'-8" 12'-8" 2x4 1%"x3%" 8'-10" 7'-4" 6'-4" 7'-10" 6'-6" 5'-6" Pre -1960 2x6 1%"x5%" 13'-6" 11'-0" 9'-9" 12'-2" 9'-10" 8'-8" 2x8 1%"x7%" 18'-0" 15'-0" 13'-4" 16'-4" 13'-4" 11'-6" 2x 10 1 %"x9%" 21'-8" 18'-8" 16'-8" 20'-4" 16'-10" 14'-6" Beyond a visual review by the contractor checking for unusual sagging or deterioration, some CBOs may want additional assurance that the roof structure complies with structural building code requirements Table 2 is an optional table some CEOs may elect to use to provide additional assurance by requiring a check of existing roof rafter spans, and supports optional criteria 1.B.5 and 1.B.6. For post -1960 construction, these span tables match the rafter span tables found in the 2013 California Building and Residential codes. For pre -1960 construction, the ratter span tables are based on structural calculations with lumber sizes and wood species and grade appropriate for older construction. Note 5 belowlists the basic assumptions upon which this table is based. Table 2 Notes: 1. See Figure 4 for definition of roof rafter maximum horizontal span. 2. "Non -tile Roof" = asphalt shingle, wood shingle and wood shake, with an assumed roof assembly weight of 10 psf. 3. "Tile Roof" = clay tile or cement tile, with an assumed roof assembly weight of 20 psf 4. Unaltered manufactured plated -wood trusses may be assumed to be code compliant and meet intent of Table 2. 5. This table is based on the following assumptions: • Span/deflection ratio is equal to or greater than 180. • For post -1960 construction, wood species and grade is Douglas Fir -Larch No. 2. • For pre -1960 construction, wood species and grade is Douglas Fir -Larch No. 1. • Other wood species and/or grade are also acceptable if allowable bending stress is equal or greater tothat listed. 18-16 Ridge sag in inches rat to exceed ridge length in feet divided by 20. < ePor e F c°Ft O i 2`' o`Fod 6i / D = Rafter Depth \,\o � Holes allowed only in middle third of rafter depth, D, and no larger than D/4 in diameter. \ Minimum spacing between holes at least D. Rafter sag in inches not to exceed rafter length in feet divided by 20. \ j Notches deeper than l4" NOT allowed along top or bottom edge of rafter "Birds Mouth" notches at end of rafters OK Verify that no diagonal or vertical roof members are cut, notched or removed Where rafters are visible from attic t/or underside of roof, visually review rafters to verify that no significant structural decay or un -repaired fire damage exists. Figure 1. Roof Visual Structural Review (Contractor's Site Audit) of Existing Conditions. The site auditor should verify the following: 1. No visually apparent disallowed rafter holes, notches and truss modifications as shown above. 2. No visually apparent structural decay or un -repaired fire damage. 3. Roof sag, measured in inches, is not more than the rafter or ridge beam length in feet divided by 20. Rafters that fail the above criteria should not be used to support solar arrays unless they are first strengthened. Module (Panel) Layout (Portrait orientation sh.., Lmdscape also OK) Rail (not regpired if roof fosters directly to moduL Hip —\ Anchor Layout (Anchors are also no. as "stand-offs,' "fee," or mounts", and connect roof to rail or module) RidgeExisting Rafter Layout I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I 1 1 1 1 1 cantilever ( L15 L - bacicspm Bottom Anchor Horizontal Spacing per Table I Figure 2. Sample Solar Panel Array and Anchor Layout Diagram (Roof Plan). Gable End Roof Edge Distances 18-17 Z w0. o� W LAG SCRE�q, w 54c"6 TYR. # # EMBEDMENT DEPTH $ LAG SCREW SIZE SHONN IS TYPICAL UNLESS OTHER FASTENER REQUIREMENTS ARE SPECIFIED BY SOLAR S¢" MINIMUM EDGE SUPPORT COMPONENT DISTANCE EACH SIDE MANUFACTURER ALLOWED SCREW INSTALLATION ZONE Figure 3. Typical Anchor with Lag Screw Attachment. IY - CNECK 9 M T� NA IAR4E9T 1 W. 9 M xorEn�xw�m rutin wwu rmoF trusses nreE aswneo To ee ewe-camuwr - w iwaaartu sreH asx arwuxEn. IY V n n YF-3♦ 11777773310 M RM Figure 4. Definition of Rafter Horizontal Span. CITY OF NEWPORT BEACH COMMUNITY DEVELOPMENT DEPARTMENT BUILDING DIVISION 100 Civic Center Drive I P.O. Box 1768 1 Newport Beach, CA 92658-8915 www.newportbeachca.gov 1 (949) 644-3200 Solar PV Standard Plan — Simplified Micro Inverter and ACM Systems for One- and Two -Family Dwellings SCOPE: Use this plan ONLY for systems using utility -interactive Micro Inverters or AC Modules (ACM) not exceeding a combined system AC inverter output rating of 10 kW, with a maximum of 3 branch circuits, one PV module per inverter and with PV module ISC maximum of 10-A DC, installed on a roof of a one- or two-family dwelling or accessory structure. The photovoltaic system must interconnect to a single-phase AC service panel of 120/240 Vac with service panel bus bar rating of 225 A or less. This plan is not intended for bipolar systems, hybrid systems or systems that utilize storage batteries, charge controllers or trackers. Systems must be in compliance with current California Building Standards Codes and local amendments of the authority having jurisdiction (AHJ). Other articles of the California Electrical Code (CEC) shall apply as specified in section 690.3. MANUFACTURER'S SPECIFICATION SHEETS MUST BE PROVIDED for proposed inverters, modules, combiner/junction boxes and racking systems. Installation instructions for bonding and grounding equipment shall be provided and local AHJs may require additional details. Listed and labeled equipment shall be installed and used in accordance with any instructions included in the listing or labeling (CEC 110.3). Equipment intended for use with PV system shall be identified and listed forthe application CEC 690.4(D). Applicant and Site Information Job Address: Contractor/Engineer Name: Signature: Date: 1. General Requirements and System Information ❑ Micro inverter Number of PV modules installed: _ Number of Micro Inverters installed: 1.1 Number of Branch Circuits, 1, 2 or 3: License # and Class: Phone Number: ❑ AC Module (ACM) Number of ACMs installed: Nate: Listed Alternating -Current Module (ACM) is defined in CEC 690.2 and installed per CEC 690.6 1.2 Actual number of Micro Inverters or ACMs per branch circuit: 1 2. 3. 1.3 Total AC system power rating = (Total Number of Micro Inverters or ACMs) * (AC inverter power output) = Watts 1.4 Lowest expected ambient temperature for this plan in Table 1: For -1° to -5° C use 1.12 or for -6° to -10° C use 1.14 correction factors. 1.5 Average ambient high temperature for this plan: =+47° C Note: For lower expected ambient or higher average ambient high temperatures, use Comprehensive Standard Plan. 2. Microinverter or ACM Information and Ratings Micro Inverters with ungrounded DC inputs shall be installed in accordance with CEC 690.35. Micro Inverter or ACM Manufacturer: Model: 2.1 Rated (continuous) AC output power: Watts 18-19 2.2 Nominal AC voltage rating: Volts 2.3 Rated (continuous) AC output current: Amps If installing ACMs, skip (STEPS 2,41 2.4 Maximum DC input voltage rating: Volts (limited to 79 V, otherwise use the Comprehensive Standard Plan) 2.5 Maximum AC output overcurrent protection device (OCPD) Amps 2.6 Maximum number of Micro Inverters or ACMs per branch circuit: 3. PV Module Information (If installing AGMs, skip to [STEP 4]) PV Module Manufacturer Model: Module DC output power under standard test conditions (STC) = Watts 3.1 Module Voc at STC (from module nameplate): Volts 3.2 Module Is, at STC (from module nameplate): Amps 3.3 Adjusted PV Module DC voltage at minimum temperature= [Table 11 [cannot exceed Step 2.41 4. Branch Circuit Output Information Fill in [Table 3] to describe the branch circuit inverter output conductor and OCPD size. Use [Table 2] for determining the OCPD and Minimum Conductor size. Table 2. Branch Circuit CCPD and Minimum Conductor Size* Will ONE Circuit Power (Watts) OCPD (Amps) Minimum Conductor Size Microinverter Max. DC Input 34 37 40 43 46 49 52 55 58 61 64 67 70 73 76 79 [STEP 2.4] (Volts) 12 '/d' 16 3840 20 10 '/." 20 4800 25 8 1" Max. Module VOC @ STC, 5760 30 8 1" 1.12 (-1° to -5° C) Correction 30.4 33.0 35.7 38.4 41.1 43.8 46.4 49.1 51.8 54.5 57.1 59.8 62.5 65.2 67.9 70.5 Factor (Volts) Max. Module VOC @ STC, 1.14 (-6" to -10° C) Correction 29.8 32.5 35.1 37.7 40.4 43.0 45.6 48.2 50.9 53.5 56.1 58.8 61.4 64.0 66.7 69.3 Factor (Volts) 4. Branch Circuit Output Information Fill in [Table 3] to describe the branch circuit inverter output conductor and OCPD size. Use [Table 2] for determining the OCPD and Minimum Conductor size. Table 2. Branch Circuit CCPD and Minimum Conductor Size* Minimum Metal Conduit Circuit Current (Amps) Circuit Power (Watts) OCPD (Amps) Minimum Conductor Size Size for 6 Current Carrying (AWG) Conductors 12 2880 15 12 '/d' 16 3840 20 10 '/." 20 4800 25 8 1" 24 5760 30 8 1" *CEC 690.8 and 210.19 (A)(1) factored in Table 2, conductors are copper, insulation must be 90" C wet -rated. Table 2 values are based on maximum ambient temperature of 69° C, which includes 22" C adder, exposed to direct sunlight, mounted > 0.5 inches above rooftop, 5 6 current carrying conductors (3 circuits) in a circular raceway. Otherwise use Comprehensive Standard Plan. 18-20 Table 3. PVArrayZonfiguratton Summary Branch 1 Branch 2 Branch 3 Number of Micro Inverters or ACMs [Step 11 5760 30 Selected Conductor Size [Table 2] (AWG) %" 28 Selected Branch and Inverter Output OCPD [Table 21 35 8 5. Solar Load Center (if used) 5.1 Solar Load Center is to have a bus bar rating not less than 100 Amps. Otherwise use Comprehensive Standard Plan. 5.2 Circuit Power see [STEP 1] = Watts 5.3 Circuit Current= (Circuit Power) / (AC voltage) = Amps Circuit Current (Amps) SolarTable 4. Circuit Power (Watts) Output • •D and Conductor Size" OCPD(Amps) Minimum Conductor Size (AWG) Minimum Metal Conduit Size 24 5760 30 10 %" 28 6720 35 8 '/." 32 7680 40 8 /" 36 8640 45 8 •/." 40 9600 50 8 %. 41.6 510000 1 60 6 3S" "CEC 690.8 and 210.19 (A)(1) factored in Table 4, conductors are copper, insulation must be 90" C wet -rated. Table 4 values are based on maximum ambient temperature of 47' C (no rooftop temperature adder in this calculation), s 3 current carrying conductors in a circular raceway. Otherwise use Comprehensive Standard Plan. 6. Point of Connection to Utility: 6.1 Load Side Connection only! Otherwise use the Comprehensive Standard Plan. 6.2 Is the PV OCPD positioned at the opposite end from input feeder location or main OCPD location? 0 Yes 0 No (If No, then use 100% row in Table 5) 6.3 Per 705.12(D)(2): (Combined inverter output OCPD size + Main OCPD size) < [bus bar size x (100% or 120%)] Combined�IiL Table 5. Maximum Inverter Output Circuit • •D Bus Bar Size (Amps) 100 125 125 200 200 200 225 225 225 Main OCPD (Amps) 100 100 125 150 175 200 175 200 225 Maximum Combined Inverter OCPD with 120% of bus bar rating (Amps) 20 50 25 60' 60' 40 60` 60' 45 Maximum Combined Inverter OCPD with 100% of bus bar rating (Amps) 0 25 0 50 25 0 50 25 0 )This plan limits the maximum system size to less than 10 kW, therefore the CCPD size is limited to 60 A. Reduction of Main Breaker is not permitted with this plan. 18-21 7. Grounding and Bonding Check one of the boxes for whether system is grounded or ungrounded: 0 Grounded 0 Ungrounded For Micro Inverters with a grounded DC input, systems must follow the requirements of GEC (CEC 690.47) and EGC (CEC 690.43). For ACM systems and Micro Inverters with ungrounded a DC input follow the EGC requirements of (CEC 690.43). 8. Markings Informational note: ANSI Z535.4 provides guidelines for the design of safety signs and labels for application to products. A phenolic plaque with contrasting colors between the text and background would meet the intent of the code for permanency. No type size is specified, but 20 point (3/8") should be considered the minimum. WARNING INVERTER OUTPUT CONNECTION DO NOT RELOCATE THIS OVERCURRENT DEVICE CEC 705.12 (D)(7) WARNING DUAL POWER SOURCES SECOND SOURCE IS PHOTOVOLTAIC SYSTEM RATED AC OUTPUT CURRENT AMPS AC NORMAL OPERATING VOLTAGE VOLTS CEC 690.54 & CEC 705.12(D)(4) Optional AC Disconnect per AHJ — —\O'- AC PV SYSTEM AC DISCONNECT n n n nSECOND SOURCE IS PHOTOVOLTAIC SYSTEM RATED AC OUTPUT CURRENT AMPS AC PV PV PV PV _ NORMAL OPERATING VOLTAGE VOLTS CEC 690.54 \ Optional Solar Load Center NOTE: CEC 705.10 requires a permanent plaque or PV PV PV PV ■ directory denoting all electric power sources on or in the n ^ ^ ^ premesis. 18-22 Solar PV Standard Plan — Simplified Micro Inverter Systems for One- and Two -Family Dwellings 9. Single -Inverter Line Diagram � PV �- I I L I PV - L----L------- j "i ---------- ---B"i---------- — DC GEC, When Required A Single -Line Diagram for Micro Inverters or ACMS Check a box for do system grounding: Grounded, ❑ Ungrounded For ungrounded do power systems, EGC is required For grounded do power systems, GEC & EGC are requiredRefer to CEC 250 120 for FGC installat on & Table Consult with SCE Branch Circuit OCPDs Branch 1 OCPD size Branch 2 OCPD size Branch 3 OCPD size Solar Load Center Main OCPD size: (table 5) Combined Inverter Output OCPD: (Table 4) Conductor Cable and Conduit Schedule EMT Not Allowed Outside Equipment Schedule TAG DESCRIPTION: (Provide model # if provided) 1 Solar PV Module or ACM. 2 Microinverter (if not ACM): 3 Junction Box (es): 4 Solar Load Center, Yes / No: 5 Performance Meter Yes / No: 6 'Utility External Disconnect Switch Yes / No: F-7 Main Electrical Service Panel � PV �- I I L I PV - L----L------- j "i ---------- ---B"i---------- — DC GEC, When Required A Single -Line Diagram for Micro Inverters or ACMS Check a box for do system grounding: Grounded, ❑ Ungrounded For ungrounded do power systems, EGC is required For grounded do power systems, GEC & EGC are requiredRefer to CEC 250 120 for FGC installat on & Table Consult with SCE Branch Circuit OCPDs Branch 1 OCPD size Branch 2 OCPD size Branch 3 OCPD size Solar Load Center Main OCPD size: (table 5) Combined Inverter Output OCPD: (Table 4) Conductor Cable and Conduit Schedule EMT Not Allowed Outside TAG Description and Conductor Type: (Table 3) Conductor Number of Conduit/ Conductor/ Conduit Size A B Prr 18-23 SOLAR PV STANDARD PLAN - SIMPLIFIED Micro Inverter and ACM Systems for One- and Two -Family Dwellings ROOF LAYOUT PLAN Items required: roof layout of all panels, modules, clear access pathways and approximate locations of electrical disconnecting means and roof access points. 18-24 CITY OF NEWPORT BEACH COMMUNITY DEVELOPMENT DEPARTMENT BUILDING DIVISION 100 Civic Center Drive I P.O. Box 1768 1 Newport Beach, CA 92658-8915 www.newportbeachca.gov 1 (949) 644-3200 Solar PV Standard Plan - Simplified Simplified Central/String Inverter Systems for One- and Two -Family Dwellings SCOPE: Use this plan ONLY for utility -interactive central/string inverter systems not exceeding a system AC inverter output rating of 10kW on the roof of a one- or two-family dwelling or accessory structure. The photovoltaic system must interconnect to the load side of a single-phase AC service panel of nominal 120/240Vac with a bus bar rating of 225A or less. This plan is not intended for bipolar systems, hybrid systems or systemsthat utilize storage batteries, charge controllers, trackers, more than two inverters or more than one DC combiner (noninverter-integrated) per inverter. Systems must be in compliance with current California Building Standards Codes and local amendments of the authority having jurisdiction (AHJ). Other Articles of the California Electrical Code (CEC) shall apply as specified in 690.3. MANUFACTURER'S SPECIFICATION SHEETS MUST BE PROVIDED for proposed inverter, modules, combiner/junction boxes and racking systems. Installation instructions for bonding and grounding equipment shall be provided, and local AHJs may require additional details. Listed and labeled equipment shall be installed and used in accordance with any instructions included in the listing or labeling (CEC 110.3). Equipment intended for use with PV system shall be identified and listed for the application (CEC 690.4[D]). Job Address: Permit #: Contractor/Engineer Name: Signature: License # and Class: Date: Phone Number: Total # of Inverters installed: (If more than one inverter, complete and attach the "Supplemental Calculation Sheets" and the "Load Center Calculations" if a new load center is to be used.) Inverter 1 AC Output Power Rating: Watts Inverter 2 AC Output Power Rating (if applicable): Watts Combined Inverter Output Power Rating: 5 10,000 Watts Location Ambient Temperatures (Check box next to which lowest expected temperature is used): 1) ❑ Lowest expected ambient temperature for the location (TJ = Between -1" to -5" C 0 Lowest expected ambient temperature for the location (TJ = Between -60 to -10° C Average ambient high temperature (TH) = 47° C Note: For a lowerTLor a higher TH, use the Comprehensive Standard Plan DC Information: Module Manufacturer: Model: 2) Module Voc (from module nameplate): _Volts 3) Module Is, (from module nameplate): _Amps 4) Module DC output power under standard test conditions (STC) = Watts (STC) 18-25 5) DC Module Layout Identify each source circuit (string) for inverter 1 shown on the roof plan with a Tag Number of modules per Identify, by tag, which source circuits on the roof are to be (e.g. A,B,C....) source circuit for inverter 1 paralleled (if none, put N/A) Combiner 1: Combiner 2: Total number of source circuits for inverter 1: 6) Are DC/DC Converters used? 0 Yes 0 No If No, skip to Step 7. If Yes enter info below. DC/DC Converter Model #; DC/DC Converter Max DC Input Voltage: Volts Max DC Output Current: Amps Max DC Output Current: Volts Max # of DC/DC Converters in an Input Circuit: DC/DC Converter Max DC Input Power: Watts 7) Maximum System DC Voltage - Use Al or A2 for systems without DC/DC converters, and Bl or B2 with DC/DC Converters. 11 A1.Module VojSTEP2)= x# in series (STEPS) x1.12(if -15T<<<-5'C, STEP S)= V 11 A2. Module V.,(STEP2)= x#inseries(STEP5) x1.14(if -65T,5-SO°C, STEP 1)= V Table 1. Maximum Number of PV Modules in Series Based on Module Rated V.,for 00 690 Max. Rated Module Vic (*1.12) 29.76 31.51 33.48 35.71 38.27 41.21 44.64 48.70 53.57 59.52 66.96 76.53 89.29 (Volts) Max. Rated Module V., (*1.14) (Volts) 29.24 30.96 32.89 35.09 37.59 40.49 43.86 47.85 52.63 58.48 65.79 75.19 87.72 Max # of Modules for 600 Vdc 18 17 16 15 14 13 12 11 10 9 8 7 6 Use for DC/DC converters. The value calculated below must be less than DC/DC converter max DC input voltage (STEPS). ❑ B1. Module V.,(STEP2)= x# of modules perconverter(STEP 6) x1.12(If -1<_TL5-5°C, STEP 1)= V B2. Module Vac (STEP 2) = x # of modules per converter (STEP 6) x 1.14 (if -6 15 TL <-10°C, STEP 1) = V Table 2. Largest Module V, for Single -Module DC/DC Converter Configurations (with 80 V AFCI Cap) (CEC 690.7 and 690.11) Max. Rated Module Von (*1.12)30.4 33.0 35.7 38.4 41.1 43.8 46.4 49.1 51.8 54.5 57.1 59.8 62.5 65.2 67.9 70.5 (Volts) Max. Rated Module V.,. (*1.14 It29 (Volts)DC/DC 8 32.5L35.1 37.7 40.4 43.0 45.6 48.2 50.9 53.5 56.1 58.8 61.4 64.0 66.7 69.3 Converter Max DC Input (Step #6) (Volts) 34 37 43 46 49 52 55 58 61 64 67 70 73 76 79 8) Maximum System DC Voltage from DC/DC Converters to Inverter - Only required if Yes in Step 6 Maximum System DC Voltage = Volts 9) Maximum Source Circuit Current Is Module I5C below 9.6 Amps (Step 3)? Yes [:,No (If No, use Comprehensive Standard Plan) 18-26 10) Sizing Source Circuit Conductors Source Circuit Conductor Size = Min. #10 AWG copper conductor, 90° Cwet (USE -2, PV Wire, XHHW-2, THWN-2, RHW-2) For up to 8 conductors in roof -mounted conduit exposed to sunlight at least %" from the roof covering (CEC 310) Note: For over 8 conductors in the conduit or mounting height of lower than Yz" from the roof, use Comprehensive Plan, 11) Are PV source circuits combined prior to the inverter? 0 Yes [i No If No, use Single Line Diagram 1 and proceed to Step 13. If Yes, use Single Line Diagram 2 with Single Line Diagram 4 and proceed to Step 12. Is source circuit OCPD required? 11 Yes C] No Source circuit OCPD size (if needed): 15 Amps 12) Sizing PV Output Circuit Conductors — If a combiner box will NOT be used (Step 11), Output Circuit Conductor Size = Min. #6 AWG copper conductor 13) Inverter DC Disconnect Does the inverter have an integrated DC disconnect? 0 Yes C7 No If Yes, proceed to step 14. If No, the external DC disconnect to be installed is rated for Amps (DC) and Volts (DC) 14) Inverter Information Manufacturer: Model: Max. Continuous AC Output Current Rating: Amps Integrated DC Arc -Fault Circuit Protection? ElYes ❑ No (If No is selected, Comprehensive Standard Plan) Grounded or Ungrounded System? 0 Grounded ❑ Ungrounded AC Information: 15) Sizing Inverter Output Circuit Conductors and OCPD Inverter Output OCPD rating = Amps (Table 3) Inverter Output Circuit Conductor Size = AWG (Table 3) 18-27 c Inverter Continuous Output Current Rating (Amps) (Step 14) 12 16 20 24 1 28 32 36 40 48 Minimum OCPD Size (Amps) 15 20 25 30 3S 40 45 50 60 Minimum Conductor Size (AWG, 75' C, Copper) 14 12 SO 10 8 8 6 6 6 18-27 16) Point of Connection to Utility Only load side connections are permitted with this plan. Otherwise, use Comprehensive Standard Plan. Is the PV OCPD positioned at the opposite end from input feeder location or main OCPD location? 0 Yes 0 No If Yes, circle the Max Combined PV System OCPD(s) at 120% value as determined from Step 15 (or Step S20), bus bar Rating, and Main OCPD as shown in Table 4. If No, circle the Max Combined PV System OCPD(s) at 100% value as determined from Step 15 (or Step S20), bus bar Rating, and Main OCPD as shown in Table 4. Per 705.12(D)(2): [Inverter output OCPD size [Step #15 or S20] + Main OCPD Size] < [bus size x (100% or 120%)] 1 B Bus Bar Rating 100 125 125 200 200 200 225 225 225 Main CCPD 100 100 125 150 175 200 175 200 225 Max Combined PV System OCPD(s) 20 50 25 60" 60" 40 60" 60" 45 at 120% of Bus Bar Rating Max Combined PV System OCPD(s) 0 25 0 50 25 0 50 25 0 at 100% Bus Bar Rating "This value has been lowered to 60 A from the calculated value to reflect 10 kW AC size maximum. Reduction of the main breaker is not permitted with this plan. Otherwise, use Comprehensive Standard Plan. 17 & 18 & 19) Labels and Grounding and Bonding This content is covered by the labels on the next page and the Single Line Diagram(s). For background information, refer to the Comprehensive Standard Plan. 6 Solar PV Standard Plan — Simplified Central/String Inverter Systems for One- and Two -Family Dwellings Markings CEC Articles 690 and 705 and CRC Section R331 require the following labels or markings be installed at these components of the photovoltaic system: WARNING INVERTER OUTPUT CONNECTION; DO NOT RELOCATE THIS OVERCURRENT DEVICE CEC 70512(D)(7) [Not required if panelboard is rated not less than sum of ampere ratings of all overcurrent devices supplying it] WARNING ELECTRIC SHOCK HAZARD. THE DC CONDUCTORS OF THIS PHOTOVOLTAIC SYSTEM ARE UNGROUNDED AND MAY BE ENERGIZED [Only required for ungrounded systems] O WARNING M DUAL POWER SOURCES SECOND SOURCE IS PHOTOVOLTAIC SYSTEM RATED AC OUTPUT CURRENT- _AMPS AC NORMAL OPERATING VOLTAGE —VOLTS CEC 690.54 & CEC 705.12(D)(4) PV SYSTEM AC DISCONNECT ilt RATED AC OUTPUT CURRENT - _AMPS C AC NORMAL OPERATING VOLTAGE _VOLTS CEC 690.54 INVERTER CRC R331.2 and CFC 605.11.1 [Marked on junction/combiner boxes and conduit every 10'1 _ II 11'11 'I J� Code Abbreviations: California Electrical Code (CEC) California Residential Code (CRC) California Fire Code (CFC) I I / r D J/Box C WARNING ELECTRIC SHOCK HAZARD IF A GROUND FAULT IS INDICATED, NORMALLY GROUNDED CONDUCTORS MAY BE UNGROUNDED AND ENERGIZED CEC 690.5(C) [Normally already present on listed inverters] WARNING ELECTRIC SHOCK HAZARD DO NOT TOUCH TERMINALS TERMINALS ON BOTH LINE AND LOAD SIDES MAY BE ENERGIZED IN THE OPEN POSITION PV SYSTEM DC DISCONNECT RATED MAX POWER -POINT CURRENT- _ADC RATED MAX POWER -POINT VOLTAGE-_VDC SHORT CIRCUIT CURRENT- _ADC MAXIMUM SYSTEM VOLTAGE- VDC CEC 690.53 Informational note: ANSI Z535.4 provides guidelines for the design of safety signs and labels for application to products. A phenolic plaque with contrasting colors between the text and background would meet the intent of the code for permanency. No Type size is specified, but 20 point (3/8") should be considered the minimum. CEC 705.12 requires a permanent plaque or directory denoting all electric power sources on or in the premises. 18-29 Solar PV Standard Plan — Simplified Central/String Inverter System for One- and Two -Family Dwellings QTAG DESCRIPTION 1 SOLAR PV MODULE / STRING 2 DC/DC CONVERTERS INSTALLED? VES I NO (IF VES, STEPS6&8 REQUIRED) 3 SOURCE CIRCUIT JUNCTION BOX INSTALLED?: YES I NO - 4 SEPARATE DC DISCONNECT INSTALLED?: YES / NO Consult with Your local AHJ and /or Utlllty INGLE-LINE DIAGRAM #1 - NO STRINGS COMBINED PRIOR TO INVERTER CHECK A BOX FOR WHETHER SYSTEM IS GROUNDED OR UNGROUNDED: ❑ GROUNDED(INCLUDE GEC) FOR UNGROUNDED SYSTEMS: ❑ UNGROUNDED - DC DICED MUST DISCONNECT BOTH CONDUCTORS OF EACH SOURCE CIRCUIT - UNGROUNDED CONDUCTORS MUST BE IDENTIFIED PER 210.5(C). WHITE -FINISHED CONDUCTORS ARE NOT PERMITTED. Q Q & 4 Q Q 7 MAIN SERVICE PANEL EMODULES E MAIN OCPD S ' _J r ' Ac MODULES:Dc III cel " -" -L - M PV OCPD MODULES, F 77 t' T\ I L (I r C IF DC/DC CONVERTERS ARE USED, CHECK THE BOX BELOW THE CORRESPO , ❑ TAG I DESCRIPTION AND CONDUCTOR TYPE I CONDUCTOR IrNU NUMBER OFl Ittlin I CONDTVTT//CABLEInsIc (CONDUIT 512E ENTER N/A" WHERE SUITABLE FOR WHEN NOT USING CONDUIT OR CABLE AS PERMITTED BY CODE CONFIGURATION( PARALLEL DC/DC CONVERTERS ON ONE SOURCE CIRCUIT (FIXED UNIT VOLTAGE DC/DC CONVERTERS) DC/DC CONVERTERS ARE ALL RUN IN SERIES (FIXED SOURCE CIRCUIT VOLTAGE DC/DC CONVERTERS( 18-30 TAC Al BI Solar PV Standard Plan — Simplified Central/String Inverter System for One- and Two -Family Dwellings SINGLE -LINE DIAGRAM #2 - COMBINING STRINGS PRIOR TO INVERTER CHECK BOK FOR WHETHER SYSTEM IS GROUNDED OR UNGROUNDED: [3GROUNDED(INCLUDE GEC) ❑ UNGROUNDED DC OCPD MUST DISCONNECT BOTH CONDUCTORS OF EACH SOURCE CIRCUIT UNGROUNDED CONDUCTORS MUST BE IDENTIFIED PER 210.5(C). WHITE -FINISHED CONDUCTORS ARE NOT PERMITTED. Consult with your local AHJ and /or Utility ENTER "N/A" WHERE SO TABLE FOR WHEN NOT USING CON DUIT OR CABLE AS PERM ITTED BY CODEI I F DC/DC CONVERTERS ARE USED, THEY ARE RUN IN SERIES (FIXED SOURCE 18-31 Supplemental Calculation Sheets for Inverter #2 (Only include if second inverter is used) DC Information: Module Manufacturer: Model: S2) Module Vo, (from module nameplate): Volts S3) Module ljfrom module nameplate): Amps S4) Module DC output power under standard test conditions (STC) = Watts (STC) S5) DC Module Layout Identify each source circuit (string) for inverter 1 shown on the roof plan with a Tag Number of modules per Identify, by tag, which source circuits on the roof are to be (e.g. A,B,C....) source circuit for inverter 1 paralleled (if none, put N/A) Combiner 1: Combiner 2: Total number of source circuits for inverter 1: Sb) Are DC/DC Converters used? 0 Yes O No If No, skip to Step ST If Yes, enter info below. DC/DC Converter Model #: DC/DC Converter Max DC Input Voltage: Volts Max DC Output Current: Amps Max DC Output Current: Volts Max # of DC/DC Converters in an Input Circuit: DC/DC Converter Max DC Input Power: Watts 18-32 S7) Maximum System DC Voltage -Use Al or A2 for systems without DC/DC converters, and B1 or B2 with DC/DC Converters. Al. Module Vpc(STEP S2)= x# in series(STEP55) xl.12(If-15T,<-5°C,STEP51)= V A2. Module Voc(STEP S2)= x# in series (STEP S5) x1.14(if -65T,5-10"C, STEP SI) = V Tabie 1. Maximum Number of PV Modules in Series Based on Module Rated Vocfor .rr Vdc Rated Equipment (CEC 690.7) Max. Rated Module V,,, (*1.12) 29.76 31.51 33.48 35.71 38.27 41.21 44.64 48.70 53.57 59.52 66.96 76.53 89.29 (Volts) Max. Rated Module Vo, (*1.14) 29.24 30.96 32.89 35.09 37.59 40.49 43.86 47.85 52.63 58.48 65.79 75.19 87.72 (Volts) Max # of Modules for 600 Vdc 18 17 16 15 1 14 13 12 11 10 9 8 7 6 Use for DC/DC converters. The value calculated below must be less than DC/DC converter max DC input voltage (STEP S6). Bl. Module Voc(STEP S2)= x#of modules per converter(STEPS6) x1.12(If -15T,<-5°C, STEPSl)= V B2. Module V., (STEP S2)= x# of modules per converter (STEP S6) x1.14(If -65TL5-10°C, STEP 51)= V -�kiiiiiiiiiiiiiiiiiiiLingle-Module DC/DC Converter Configurations (with 80 V AFCI Cap) (CEC 690.7 and 690.11) Max. Rated Module V,,, (*1.12)30.4 33.0 35.7 38.4 41.1 43.8 46.4 49.1 51.8 54.5 57.1 59.8 62.5 65.2 67.9 70.5 (Volts) Max. Rated Module Vo, (*1.14) 29.8 32.5 35.1 37.7 40.4 43.0 45.6 48.2 50.9 53.5 56.1 58.8 61.4 64.0 66.7 69.3 (Volts) DC/DC Converter Max DC Input 34 37 40 43 46 49 52 55 58 61 64 67 70 73 76 79 (Step 6) (Volts) S8) Maximum System DC Voltage from DC/DC Converters to Inverter - Only required if Yes in Step S6 Maximum System DC Voltage = Volts S9) Maximum Source Circuit Current Is Module Ise below 9.6 Amps (Step S3)? 0 Yes C7 No (If No, use Comprehensive Standard Plan) S10) Sizing Source Circuit Conductors Source Circuit Conductor Size = Min. #10 AWG copper conductor, 90° C wet (USE -2, PV Wire, XHHW-2, THWN-2, RHW-2) For up to 8 conductors in roof -mounted conduit exposed to sunlight at least W from the roof covering (CEC 310) Note: For over 8 conductors in the conduit or mounting height of lower than Y2" from the roof, use Comprehensive Plan. Sl 1) Are PV source circuits combined prior to the inverter? ❑ Yes C1 No If No, use Single Line Diagram land proceed to Step S13. If Yes, use Single Line Diagram 2 with Single Line Diagram 4 and proceed to Step S12. Is source circuit OCPD required? ❑ Yes C] No Source circuit OCPD size (if needed): 15 Amps S12) Sizing PV Output Circuit Conductors - If a combiner box will NOT be used (Step Sll), Output Circuit Conductor Size = Min. #6 AWG copper conductor S13) Inverter DC Disconnect Does the inverter have an integrated DC disconnect? 0 Yes C7 No If Yes, proceed to Step S14. If No, the external DC disconnect to be installed is rated for Amps (DC) and Volts (DC) 18-33 S14) Inverter Information Manufacturer: Max. Continuous AC Output Current Rating: Amps Integrated DCArc-Fault Circuit Protection? 0 Yes 0 No (If No is selected, Comprehensive Standard Plan) Grounded or Ungrounded System? 0 Grounded 0 Ungrounded AC Information: S15) Sizing Inverter Output Circuit Conductors and OCPD Inverter Output OCPD rating = Amps (Table 3) Inverter Output Circuit Conductor Size = AWG (Table 3) LTable 3. Minimum Inverter Output OCPD a Inverter Continuous Output Current Rating (Amps) (Step 14) 12 16 20 24 28 32 36 40 48 Minimum OCPD Size (Amps) 15 20 25 30 35 40 45 50 60 Minimum Conductor Size (AWG, 75° C, Copper) 14 12 10 10 8 8 6 1 6 6 Load Center Calculations (Omit if a load center will not be installed for PV OCPDs) S20) Load Center Output: Calculate the sum of the maximum AC outputs from each inverter. Inverter #1 Max Continuous AC Output Current Rating [STEP S141 x 1.25 = Amps Inverter #2 Max Continuous AC Output Current Rating [STEP S14] x 1.25 = Amps Total inverter currents connected to load center (sum of above) = Amps Conductor Size: AWG Overcurrent Protection Device: Amps Load center bus bar rating: Amps The sum of the ampere ratings ofovercurrent devices in circuits supplying power to a bus bar or conductor shall not exceed 120 percent of the rating of the bus bar or conductor. 18-34 Solar PV Standard Plan — Simplified Central/String Inverter System for One- and Two -Family Dwellings SINGLE -LINE DIAGRAM #3 - ADDITIONAL INVERTER FOR DIAGRAM #1 INVERTER # 2 GENTRAL INVERTER CHECK A BOX FOR WHETHER SYSTEM 15 GROUNDED OR UNGROUNDED: ❑GROUNDED(INCLUDE GEC) -SEPARATE AC DISCONNECT INSTALLED?: YES / NO TO LOAD CENTER ON LINE DIAGRAM i Cl UNGROUNDED FOR UNGROUNDED SYSTEMS: a Consult with your local AHI and /or Utility, - DC OCPD MUST DISCONNECT BOTH CONDUCTORS OF EACH SOURCE CIRCUIT - UNGROUNDED CONDUCTORS MUST BE IDENTIFIED PER 21D.S(C). WHITE -FINISHED CONDUCTORS ARE NOT PERMITTED ❑TAG I DESCRI PTI 0N AN D CON DUCTOR TYP E I`u uwuvnl rvwniocnvr I c" ;'cu o"E ICON DUIT SIZE( 512E CONDUCTORS TYPE A USE -2o OR PV -WIRE o B ENTER "N/A" WHERE SUITABLE FOR WHEN NOT USING CONDUIT OR CABLE AS PERMITTED BY CODE CONVERTERS ARE USED, CHECK THE BOK BELOW THE CORRESPONDING CONFlGDBATION ❑ ❑ PARALLEL DC/DC CONVERTERS ON ONE DC/DC CONVERTERS ARE ALL RUN SOURCE CIRCUIT (FIXED UNIT VOLTAGE IN SERIES(FIXED SOURCE CIRCUIT 18-35 Solar PV Standard Plan — Simplified Central/String Inverter System for One- and Two -Family Dwellings SINGLE -LINE DIAGRAM #4 - ADDITIONAL INVERTER FOR DIAGRAM #2 INVERTER # 2 CHECK A BOK FOR WHETHER SYSTEM IS GROUNDED OR UNGROUNDED: ❑GROUNDED (INCLUDE GEC) FOR UNGROUNDED SYSTEMS: ❑ UNGROUNDED -DC OCPD MUST DISCONNECT BOTH CONDUCTORS OF EACH SOURCE CIRCUIT - UNGROUNDED CONDUCTORS MUST BE IDENTIFIED PER 210.5(0). WHITE -FINISHED CONDUCTORS ARE NOT PERMITTED. Consult with your local AHD and /or Utility COMBINER CONDUCTOR/CONDUIT SCHEDULE NON -COMBINED STRINGS CONDUCTOR/CONDUIT SCHEDULE (IF APPUCABLE) ❑ DESCRIPTION AND CONDUCTOR NUMBEROF CONDUIT/CABLE CONDUIT SIZE ❑TAG DESCRIPTIONAND CONDUCTOR NUMBEROF CONDUIT/CABLE TAG CONDUCTORTYPE SIZE CONDUCTORS TYPE CONDUCTORTYPE SIZE CONDUCTORS TYPE CONDUITSIZE Al USE -2o OR PVWIREo A2 USE -2o OR PV -WIRE o EGC/GEC; EGC/GEC: 81 B2 EGC/GEC EGC/GEC: ff fJC/f>C CONVERTERS ARE USED, THEY ENTER "N/A" WHERE SUITABLE FOR WHEN NOT USING CONDUIT OR CABLE AS PERMITTED BY CODE ARE RUN IN SERIES IR%O SOURCE 18-36 SOLAR PV STANDARD PLAN Roof Layout Diagram for One- and Two -Family Dwellings Items required: roof layout of all panels, modules, clear access pathways and approximate locations of electrical disconnecting means and roof access points. 18-37 ATTACHMENT D CITY OF NEWPORT BEACH COMMUNITY DEVELOPMENT DEPARTMENT BUILDING DIVISION 100 Civic Center Drive I P.O. Box 1768 1 Newport Beach, CA 92658-8915 www.newportbeachca.gov 1 (949) 644-3200 Photovoltaic (PV) Systems Standard Inspection Checklist Make sure all PV system AC/DC disconnects and circuit breakers are in the open position and verify the following: YES NO 1. All work done in a neat and workmanlike manner (CEC 110.12). 2. PV module model number, quantity and location according to the approved plan. Module manufacturer, make, model and number, fire classifications of modules and brackets match the approved plans. 3. Array mounting system and structural connections according to the approved plan. Modules are attached to the mounting structure according to the manufacturer's instructions and the approved plans. 4. Roof penetrations/attachments are properly flashed. 5. Conduit installation according to: CRC R331.3, CEC 690.4(F) and NBMC 15.06.040 Amendment to CEC Article 358.10 (The use of EMT in interior locations only). 6. Roof access points, paths and clearances need to comply with the CFC 605.11.3.1, 605.11.3.3.3, CRC R331.4.2.1 trough R331.4.2.4. 7. Grounding/bonding of rack and modules according to the manufacturer's installation instructions that are approved and listed. 8. PV system operating at 80 volts or greater shall be protected by a listed DC arc fault protection. (CEC 690.11). 9. AC and DC modules, converters, combiners, inverters, disconnects, load centers and electrical service equipment are properly marked and labeled. (CEC 110.3, 690.4[D], 690.51 & 690.52). 10. For grid -connected systems, inverter is marked "utility interactive." 11. For ungrounded inverters, installation complies with CEC 690.35 requirements. 12. Conductors and overcurrent devices are the type and size according to the approved plan. 13. Inverter output circuit breaker is located at opposite end of bus from utility supply at load center and/or service panelboard (not required if the sum of the inverter and utility supply circuit breakers is less than or equal to the panelboard bus rating). Photovoltaic (PV) Systems Standard inspection Checklist YES NO 14. Modules and Racking systems are bonded and grounded in accordance with the manufacturer's installation instructions, that are listed and approved, using the supplied hardware or listed equipment specified in the instructions and identified for the environment. (CEC 690.43 & 110.3[B]). 15. Properly sized equipment grounding conductor is routed with the circuit conductors. (CEC 690.45, 250.134[B] & 300.3[B]). 16. Access and working space for operation and maintenance of PV equipment such as inverters, disconnecting means and panelboards (not required for PV modules) (CEC 110.26). 17. Provide markings per plan 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. NOTES: Photovoltaic Systems Checklist Approved: Permit #: By: Date: P to Vokas(PV)SystemsSta ardiv pection cUst 07/0120/5 2 18-39