The URL can be used to link to this page

Home My WebLink AboutRESIDENTIAL PV ROOF MOUNT INSTALLATIONGodwin Engineering and Design, LLC 8378 Foxtail Loop Pensacola, FL 32526 D. Chad Godwin, PE Chad@godwineng.com 3'-5" 5'-8" R-1 # Modules (17) Pitch: 18° Azimuth: 180° R-2 # Modules (7) Pitch: 18° Azimuth: 271°R-1 R-2 F R O N T O F H O U S E 11/20/2021 KG . . 1331 Green Forest Ct, Ste 3 Winter Garden FL, 34787 407-926-0233 1st Responder Access minimum of 36" unobstructed as per Section R324 of the 2018 IRC Customer Info: S-1 Date: Drawn by: Revised by: Rev #: 00 Rev Date: Page: Represents all Fire Clearance including Alternative methods Meets the requirements of the following- (2020 FL Residential Code & FBC, 7th Edition (2018 International Residential Code) - 2nd Printing modified by the FL Building Standards, 2020 Florida Building Energy Conservation Code 7th edition, County of St. Lucie Code, 2017 National Electric Code.) Legend First responder access Sheet Index S-1 Cover Sheet / Site Plan S-2 Detail E-1 One - Line E-2 Electrical Code S-1A Mounting Plan Utility Meter PV Disconnect Vent Pipe Chimney Satellite N Inverter Type: PV Panel: Racking: Total Wattage: Roof Type: Wind Load: Fastener Type: Chiko Enphase IQ7PLUS-72-2-US (24) FAM365E7G-BB 8,760W Composition Shingle 7 to 20 Deg Use Sunmodo NanoMounts F R O N T O F H O U S E Layout Subject to Change Based on Site Conditions Meets All Editions of Florida Fire Prevention Code 2020 7th Edition Compass for Aerial General Notes: -Enphase IQ7PLUS-72-2-US Micro Inverters are located on roof behind each module. -First responder access maintained and from adjacent roof. -Wire run from array to connection is 40 feet. System meets the requirements of NFPA 70th Edition, Chapter 11.12 Install will be done to Manufacturer Spec Beverly Brown-Williams 9521 Windrift Cir Fort Pierce, FL 34945 Meets all requirements of NFPA-1 7th Edition and NFPA-101 3' Access Pathway Ground Access Point Ground Access Point Ground Access Point 2' Gutter -COGEN Disconnect Located adjacent to Utility meterUtility Meter Godwin Engineering and Design, LLC 8378 Foxtail Loop Pensacola, FL 32526 D. Chad Godwin, PE Chad@godwineng.com 11/20/2021 KG . . 1331 Green Forest Ct, Ste 3 Winter Garden FL, 34787 407-926-0233 -Roof Height 25' -Per 2020 FBC, the Roof Mounted PV System will be subject to the following design criteria: Design Wind Speed(Vult) - 160mph 3 sec gust, Exposure Category - B -Designed as per ASCE7-16 Customer Info: S-2 Roof Section Pitch Roof Rafter and Spacing Overhang Notes: R1-R2 4/12 2"x4" @ 24 O.C.12" Date: Drawn by: Revised by: Rev #: 00 Rev Date: Page: Inverter Type: PV Panel: Racking: Total Wattage: Roof Type: Wind Load: Fastener Type: Chiko Enphase IQ7PLUS-72-2-US (24) FAM365E7G-BB 8,760W Composition Shingle 7 to 20 Deg Use Sunmodo NanoMounts Truss Install will be done to Manufacturer Spec Beverly Brown-Williams 9521 Windrift Cir Fort Pierce, FL 34945 General Notes: - Sunmodo Nano Mount are secured to rafters using 5/16" x 4.75" stainless steel Lag bolts. - Subject roof has One layer. - All penetrations are sealed. @ 48" O.C. in Zone 1, @ 24" O.C in Zone 2e, @ 24" O.C. in Zone 2r & @ 24" O.C in Zone 3 Chiko Rail Godwin Engineering and Design, LLC 8378 Foxtail Loop Pensacola, FL 32526 D. Chad Godwin, PE Chad@godwineng.com 11/20/2021 KG . . 1331 Green Forest Ct, Ste 3 Winter Garden FL, 34787 407-926-0233 In Case of Emergency Call Florida Power Management at 407-926-0233 60A Service Rated Fused Disconnect Neutral to Ground Bond AC Disconnect 40A Fuse #6 AWG THWN (1) Line 1 (1) Line 2 (1) Neutral in @ least 3/4" Conduit Typically Customer Info: E-1 Date: Drawn by: Revised by: Rev #: 00 Rev Date: Page: Refer to NEC 312.8 for Conditions on taps in switch and over current devices Enclosures. If the conditions are not met a tap box will need to be installed and revision completed. GEC NOTES - Ungrounded system per 690.41(A)(4) - GEC must be installed per 250.64 - GEC must be continuous un-spliced or irreversibly spliced from inverter to existing service ground system or continuous from the arrays to the existing service ground system. - GEC must be min #8 AWG and installed in conduit - If GEC is not in conduit, it must be #6 min Manual Lockable Disconnect Install will be done to Manufacturer Spec Note: -All wiring to meet the 2017 NEC and Florida electric codes. 60A Disconnect -Type of conduit to be determined on site by contractor. Including the label below Beverly Brown-Williams 9521 Windrift Cir Fort Pierce, FL 34945 Located Adjacent to Utility Meter Inverter Type: Enphase IQ7PLUS-72-2-US PV Panel: (24) FAM365E7G-BB Total Wattage: 8,760W System meets the grounding requirements of NEC 690.43 All Labels & Markings for photovoltaic system will be reflective and meet all requirements for NFPA 11.12 Disconnects will be Visible, lockable, adjacent to and within 10' of utility meter Meets 11.12.2.1.5 #10 AWG THWN for Home runs (1) Line 1 (1) Line 2 Per Circuit #8 AWG THWN (1) EGC Inside @ least 3/4" Conduit (tbd on site) Photovoltaics: (24) FAM365E7G-BB Inverters: (24) Enphase IQ7PLUS-72-2-US Micro Inverters Circuits: (2) circuits of (12) Modules Maximum Inverters Per 20A Circuit (13) Roof Enphase Combiner Box (1) - 20A Breaker Per Circuit #8 AWG THWN (1) Line 1 (1) Line 2 (1) Neutral #8 (1) EGC in @ least 3/4" Conduit Typically Disconnect AC Max Output Current AC Max Output Current * 1.25% Overcurrent Protection (A)No. of Current Carrying Cond Conductor Gauge (AWG) Enphase Output Ckt Per String To Overcurrent Protection Device Enphase Total Output Ckt AC Max Output Current AC Max Output Current * 1.25% Overcurrent Protection (A) No. of Current Carrying Cond Conductor Gauge (AWG) NEC LABEL NOTES: 1. THE WARNING SIGN(S) OR LABEL(S) SHALL COMPLY WITH NEC 110.21(B) 2. LABELS SHALL BE SUITABLE FOR THE ENVIRONMENT WHERE THEY ARE INSTALLED. 3. LABELS TO BE A MIN LETTER HEIGHT OF 3/8" AND PERMANENTLY AFFIXED. 4. LABELS SHALL ALSO COMPLY WITH THE SPECIFIC REQUIREMENTS OF THE AUTHORITY HAVING JURISDICTION. WARNING ELECTRIC SHOCK HAZARD DO NOT TOUCH TERMINALS. TERMINALS ON BOTH THE LINE AND LOAD SIDES MAY BE ENERGIZED IN THE OPEN POSITION NEMA 3R Junction BoxBlack - L1 Red - L2 Green - Ground Enphase IQ Trunk Cable Q-12-240 #12AWG THHN-THWN-2 UL 9703 Grounding Conductor to be bare #8 Awg #X-IQ-AM1-240Solar Combiner Box 240V PHOTOVOLTAIC SYSTEM ! AC DISCONNECT ! RATED AC OUTPUT CURRENT: 29.04A NOMINAL OPERATING VOLTAGE: 240VAC 2 Circuits 10/15A Breaker for Envoy M Main Service (2)150A Main Interior Panel A Line Side Tap Interior Panel B 150A 150A Godwin Engineering and Design, LLC 8378 Foxtail Loop Pensacola, FL 32526 D. Chad Godwin, PE Chad@godwineng.com 11/20/2021 KG . . 1331 Green Forest Ct, Ste 3 Winter Garden FL, 34787 407-926-0233 In Case of Emergency Call Florida Power Management at 407-926-0233 In Case of Emergency Call Florida Power Management at 407-926-0233 Customer Info: E-2 Date: Drawn by: Revised by: Rev #: 00 Rev Date: Page: GEC NOTES - Ungrounded system per 690.41(A)(4) - GEC must be installed per 250.64 - GEC must be continuous un-spliced or irreversibly spliced from inverter to existing service ground system or continuous from the arrays to the existing service ground system. - GEC must be min #8 AWG and installed in conduit - If GEC is not in conduit, it must be #6 min Design Temperature (°F) Max Ambient Temp. Range (°F) Temp. Rating of Conductor No. of Current Carrying Cond AC Max Output Current 94 To Overcurrent Protection Device 87-9575°C <4 29.0436.3 40 0.94 100% 310.15(B)(2)(a) 310.15(B)(3)(a) 690.8(A)(3) 690.8(B) 310.15(B)(2)(a) 310.15(B)(3)(a) 310.15(B)(16) AC Max Output Current * 1.25% Overcurrent Protection (A) Amb. Temp Correction Factor Raceway Fill Adjustment Factor Cond. Gauge (AWG) Cond. Allowable Ampacity (Amps) Cond. Adjusted Ampacity (Amps) Install will be done to Manufacturer Spec Including the label below Beverly Brown-Williams 9521 Windrift Cir Fort Pierce, FL 34945 Inverter Type: Enphase IQ7PLUS-72-2-US PV Panel: (24) FAM365E7G-BB Total Wattage: 8,760W System meets the grounding requirements of NEC 690.43 All Labels & Markings for photovoltaic system will be reflective and meet all requirements for NFPA 11.12 Disconnects will be Visible, lockable, adjacent to and within 10' of utility meter Note: -Subject PV Systems has been designed to meet the requirments of the NEC 2017, and those set forth by the Florida Solar Energy Center Certification, Including Maximum Number of Module Strings, Maximum number of modules per string, Maximum Output, Module Manufacturer and model number, inverter manufacturer and model number, as applicable. Rapid Shutdown Built in Per Code NEC 690.12 Coductors have a min apacity of 60 amperes Per Code NEC 230.79(D) PV AC disconnect is lockable in the open position per code NEC 705.22(6) Labels will be placed in the correct location Per Code NEC 690.56(B), 690.56(C), & 690.53 Metallic conduits, raceways or flexible metal conduit exceeding 6 feet in length are not permitted in accordance with NEC article 690.31(G). Include required label for metallic raceways and conduits to sheet E-1 per NEC article 690.31(G)(3). Add required label to sheet E-1 per NEC article 705.10. Include required label to sheet E-1 per NEC article 705.12(B) Photovoltaic AC disconnect shall be capable of being locked in the open position per NEC article 705.22(6). Photovoltaic AC Overcurrent protection shall be located within 10 feet of the point where conductors are connected to the service per NEC 705.31. 705.12(B)(3) 705.12(B)(2)(3)(b) NEC 705.10 A permanent plaque or directory, denoting the location of all electric power source disconnecting means on or in the premises, shall be installed at each service equipment location and at the location(s) of the system disconnect(s) for all electric power production sources capable of being interconnected. One sign required for each PV system. -Markings Shall Be reflective, Weather Resistant and suitable for the environment. -Markings Shall be red with white lettering with minimum 38" Capital Letters Disconnect means shall be provided for alldisconnecting all ungrounded conductors that supplyor pass throught the building or structure Per Code2017 NEC Section 225.31 & Section 225.32 In compliance with NEC 250.58, NEC 690.8, NEC 250.24, NEC250.24(D) NEC 690.31 (G)(3) NEC 690.35 E04. Construction documents specify PV system circuits installed on or in buildings include a rapid shutdown function that controls specific conductors in accordance with NEC article 690.12. E05. These construction documents specify that a label is provided with the method to initiate rapid shut down per 690.12(4). E06. Construction drawings specify buildings or structures with both utility service and a PV system, complying with NEC article 690.l2 shall have a permanent plaque or directory including the following wording: “PHOTO VOLTAIC SYSTEM EQUIPPED WITH RAPID SHUTDOWN” as per NEC article 690.56 (C). E07. Construction documents specify PV power circuit labels shall appear on every section of the wiring system that is separated by enclosures, walls, partitions, ceilings, or floors. E08. Construction documents specify all warning sign(s) or label(s) shall comply with NEC article 110.21 (B). Label warnings shall adequately warn of the hazard. Labels shall be permanently affixed to the equipment, and Labels required shall be suitable for the environment. Markings shall be placed on all DC Conduits, DC Combiners, Raceways, Enclosures, Junction Boxes, and Cable Assemblies at every 10', turns, and above and below penetrations in compliance with NFPA System is in complaince with FFPC 1:11.12 7th Edition. Smoke Detectors will be added as per FBC 553.883 Permanent sticker added to disconnect Apply to Main Disconnect Figure 690.56(C)(1)(a) Label for PV Systems thatShut down the array and the conductors leaving the array Disconnect is in compliance 230.72 Supply side disconnect adjacent to Msp Over Current Protection Device is "Next size up"Based on Inverter Maximum Continuous OutputCurrent Rating 2017 NEC 240.4(B) All Exterior equipment is A minimum of Nema-R3 Rated All Interactive System(S) Points of interconnectionwith other sources shall be marked at an accesiblelocation at the disconnecting means as a powersource and with the rated ac output current and thenominal operating AC voltage. Per NEC 690.54 -A placard will be added with instructions and locations to be in compliance with 690.12, 690.56(B) and NEC 705.10 -All new equipment located adjacent to Meter on exterior wall Everything will be built to Code without all Specifics labeled on plan In compliance with 230.71 The Placard shall be permanently riveted..., and shall be made of red, weatherproof, hard plastic, with engraved white block lettering. WARNING: DUAL POWER SUPPLY SOURCES: UTILITY GRID AND PV SOLAR ELECTRIC SYSTEM WARNING: INVERTER OUTPUT CONNECTION: DO NOT RELOCATE THIS OVERCURRENT DEVICE PHOTOVOLTAIC SYSTEM EQUIPPED WITH RAPID SHUTDOWN WARNING: DEDICATED SOLAR PANEL DO NOT CONNECT ANY OTHER LOADS WARNING:PHOTOVOLTAIC POWER SOURCE 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 THE ARRAY. SOLAR ELECTRIC PV PANELS 3/8 IN MIN. TEXT 3/16 IN MIN. TEXT ! WARNING ! POWER SOURCE OUTPUT CONNECTION: DO NOT RELOCATE THIS OVERCURRENT DEVICE Plans Satisfy NEC 250.94 & NEC250.53(A)(2) Combiner box in compliance Per Code NEC 705.12 2* 20A < 125A *No other loads to be added Line Side Tap will be done in Main Service Panel inside of garage. Enphase Total Output Ckt Note: -All wiring to meet the 2017 NEC and Florida electric codes. 60A Disconnect -Type of conduit to be determined on site by contractor. 850 47 50*.94*1=47 Godwin Engineering and Design, LLC 8378 Foxtail Loop Pensacola, FL 32526 D. Chad Godwin, PE Chad@godwineng.com 7' Splice Bar Chiko Mids 4' Chiko Ends/End Caps Chiko Ground Lugs Chiko Rail 5734 4 2827 FAM365E7G-BB Enphase IQ7PLUS-72-2-US 24 24 Combiner 14'16 60A Fused Disconnect 1 240A Fuses 220A Breakers 1Enphase Combiner Box Sunmodo NanoMounts 3'-5" 5'-8" R-1 # Modules (17) Pitch: 18° Azimuth: 180° R-2 # Modules (7) Pitch: 18° Azimuth: 271° 20'-9" 41'-4" L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L LL L L L L L L L L L L L L LL L L L L L 7'-4" 20'-6" 50'-10" 2' Gutter 2' Gutter 8'-6" 12'-0" 2'-6" L 11/20/2021 KG . . 1331 Green Forest Ct, Ste 3 Winter Garden FL, 34787 407-926-0233 Customer Info: S-1A Date: Drawn by: Revised by: Rev #: 00 Rev Date: Page: Inverter Type: PV Panel: Racking: Total Wattage: Roof Type: Wind Load: Fastener Type: Chiko Enphase IQ7PLUS-72-2-US (24) FAM365E7G-BB 8,760W Composition Shingle 7 to 20 Deg Use Sunmodo NanoMounts Install will be done to Manufacturer Spec Beverly Brown-Williams 9521 Windrift Cir Fort Pierce, FL 34945 Plans satisfy zones FBC-1510.7.1 L Proposed Mounting locations Zone 2e, 2r & 3:Max cantilever is 8" as per manufacturer spec. Max Cantilever = Max Span * (13)=24"*(13)=8" Max cantilever is 16" as per manufacturer spec. Max Cantilever = Max Span * (13)=48"*(13)=16"Zone 1: FAM_E7G-BB / 120 cells345W - 365 WMono-Crystalline PV ModuleLinear performancewarrantyCurrentA]940±1400±11762±1351410Tel : +886-2-2656-2000Tel : +886-3-578-0011 GODWIN ENGINEERING AND DESIGN, LLC 8378 Foxtail Loop, Pensacola, FL 32526 | (850)712-4219 | chad@godwineng.com November 24, 2021 To: St. Lucie County Building Division 2300 Virginia Avenue Ft. Pierce, FL 34982 Re: Brown-Williams – Residential PV Roof Mount Installation 9521 Windrift Cir. Fort Pierce, FL 34945 Plan Reviewer, This letter is regarding the installation of a new roof mounted Solar PV System on the existing residential structure at the address above. I have reviewed the attachment plan and have determined that the roof mounted PV system is in compliance with the applicable sections of the following Codes as amended and adopted by the jurisdiction: 2020 Florida Building Code 7th Edition, FBC ASCE 7 Min. Design Loads for Buildings & Other Structures Per 2020 FBC, the Roof Mounted PV system will be subject to the following design criteria: Design Wind Speed(Vult) - 160mph 3sec gust, Exposure Category – B The PV System consist of the modules, railing, and connection hardware. The system will add a dead load of approximately 3 psf to the roof. The existing roof covering is Asphalt Shingle with min. ½” plywood decking and 2” x 4” roof trusses 24” O.C. The roofing, decking, and roof trusses are in good condition. The existing structure will be adequate for supporting the additional PV dead load and wind loads. The securement method of the PV system is to be flush mounted to the asphalt shingle roof with the Chiko railing and the Sunmodo Nano Mounts. The attachments can be attached up to 48” apart in roof zone 1, and 24” apart in roof zones 2e, 2r, & 3. The mounts should be staggered, where possible, to allow distribution of the design loads evenly to the structure. The mounts shall be installed with a min. 5/16” lag screw with minimum 2-5/16” thread length. Please see attached documents and contact me should you have any questions. Sincerely, D. Chad Godwin, PE 81360 Exp. 02/28/2023 Risk Category II Table 1.5-1 Wind Speed (asd)124 mph FRC R301.2.1.3 Basic Wind Speed (Ult)160 mph Figure 26.5-1B Effective Wind Area 19.88 ft2 26.20 Roof Angle Wind Directionality Kd 0.85 Table 26.6-1 Roof Type Hip Topographic factor Kzt 1.00 26.8 or 26.8.2 Exposure Cat.B,C, or D B Section 26.7 Ground Elevation Factor Ke 1.00 Table 26.9-1 Mean Roof Height h 25.00 ft Velocity Exposure Coefficient Kz 0.70 Table 26.10-1 Roof attachment 4.75" Lag Screw Array Edge Factor gE 1.50 29.4.4 *Modules are considered Exposed Rafter/Truss Spacing 24 in O.C.Solar Panel Equalization Factor ga 0.68 Fig. 29.4-8 No. of Rails 2 Velocity Pressure qh 23.40 psf qh=0.00256 KzKztKdKeV2 No. of Modules - Portrait 24 Added Safety Factor 1.2 No. of Modules - Landscape 0 Allowable Pullout per mount 859.2 lbs Module Model Number 0.4h or 0.6h 10.00 ft Flat - 0.6h, Gable, Hip - 0.4h bldg. least horizontal dim (typ.)180 in 10% of least horizontal dim 1.50 ft Elevation <1000 ft Roof Zone Set Back a 3.00 ft Est. # of attachment points 57 h2 5 in Not > 10in(panel height above roof) 2h2 10 in *min distance array shall be from the roof edge, Gable Ridge, or hip ridge 24 0.25 in min gap between all panels but not > 6.7ft Wmod 43 lbs 3.44 ft d1 1.00 ft Horizontal distance orthogonal to panel edge Wmods 1037 lbs 5.78 ft d2 0.25 ft Horizontal distance from edge of one panel to the nearest edge in the next row Wmic 96 lbs 19.88 ft2 0.5h 12.50 ft *modules are considered exposed that are within 1.5Lp from roof edge WPV rail 18 lbs Wtotal 1151 lbs Ultimate Allowable AT 477.03 ft2 113.4 75.6 Eq.1 Point Load = Roof Zone psf * TA DPV 2.41 psf -50.4 -33.6 Eq.2 TA = (Module Length /2) * Max Span Weight/attachment 20.2 lbs Eq.3 *Max span Equation, SF = Allowable pullout / Point Load Eq.4 Max Span = Allowable Pullout / (SF * Roof Zone psf * L/2) 1 2e 2r 3 0 0 a) GCp - Uplift -1.3 -1.7 -1.7 -1.7 #N/A #N/A GCp - Down 0.7 0.7 0.7 0.7 #N/A #N/A b)Allowable Module load ratings are determined by SF = 1.5 p = qh(GCp)(gE)(γa)-28.6 -38.2 -38.2 -38.2 #N/A #N/A psf 29.4-7 p = qh(GCp)(gE)(γa)16.7 16.7 16.7 16.7 #N/A #N/A psf 29.4-7 Max Allowable Span 6 6 6 6 #N/A #N/A ft *notes Max Cantilever (in)24 24 24 24 #N/A #N/A Max span * 33% (in) 69.37 x 41.26 x 1.38 Module load ratings ASCE 7-16 CHAPTER 29 WIND LOADS - Rooftop Solar Panels Minimum Design Loads - Part 1: Enclosed(Gable,Hip,Flat h<60ft, 0°<θ<45°) Notes PV Attachment - Results Total Weight Total Area Dead Load Array Width Micro/optimizer Length PV Rail Module Area PV Dead Load Module and Racking Specs # of Modules The Max span between attachment points must not exceed the rail spans provided by racking manufacture. Wind Load Paramaters 8° to 20° FAM3xxSE7G-BB Roof Zones - Hip 8° to 20° 10% of least hor. Dim. Or 0.4h, whichever is smaller, but not less than either 4% of Least hor. Or 3ft. (flat roof - 0.6h) Module Dimensions, LxWxH (in) Load Rating - Snow(psf) Load Rating - Wind(psf) Wind Load Parameters - Inputs