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HomeMy WebLinkAboutAPPROVED PLANS - 23-00570 - 3853 Mountain View Dr - Solar PanelsAuthor Name Author Email Author Phone No.: Alex Owens Alex.Owens@rexburg.org 208-372-2172 Description : 3853 Mountain View Dr - Solar Panels Address : 3853 Mountain View Dr Record Type : Solar Panels Document Filename : Drawings-Solar-BCrowther_2023-08-05.pdf Comment Author Contact Information: Corrections in the following table need to be applied before a permit can be issued Review Report Approved # 23-00570 Page Reference Annotation Type Author : Department Status Page Review Comments Applicant Response Comments Pg 1 Stamp Alex Owens : Electrical Open 1 Approved - Electrical Inspector Solar Panels Approval of plans does not constitute approval of variance from code Powered by TCPDF (www.tcpdf.org) GRID-TIED SOLAR PHOTOVOLTAIC SYSTEM BRENT E CROWTHER RESIDENCE 3853 W MOUNTAIN VIEW DRIVE REXBURG, IDAHO 83440 AUGUST 2023 FINAL DESIGN Brent E Crowther 8/6/23 1 3 4 2 5 6 7 8 9 10 11 12 PAGE 2 OF 15 REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY DATE 7/31/23 TITLE SINGLE LINE DIAGRAM DE S C R I P T I O N CR O W T H E R R E S I D E N C E 38 5 3 W M O U N T A I N V I E W D R RE X B U R G , I D 8 3 4 4 0 GR I D - T I E D R O O F T O P S O L A R S Y S T E M DRAWN BY BEC CHECKED BY BEC DESIGNED BY BEC PROJECT NUMBER 01-23-0015 0.0 in. 72.0 in. 120.0 in. 240.0 in. Brent E Crowther 8/6/23 PAGE 3 OF 15 REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY DATE 7/31/23 TITLE SINGLE LINE DIAGRAM DE S C R I P T I O N CR O W T H E R R E S I D E N C E 38 5 3 W M O U N T A I N V I E W D R RE X B U R G , I D 8 3 4 4 0 GR I D - T I E D R O O F T O P S O L A R S Y S T E M DRAWN BY BEC CHECKED BY BEC DESIGNED BY BEC PROJECT NUMBER 01-23-0015COMBINED PARAMETER UNITS MPPT 1 MPPT 2 SUBTOTAL MPPT 1 MPPT 2 SUBTOTAL TOTAL MODULES IN SERIES 8 8 16 7 7 14 30 ARRAY STC POWER WATTS 2,640 2,640 5,280 2,310 2,310 4,620 9,900 ARRAY PTC POWER WATTS 2,439 2,439 4,878 2,134 2,134 4,268 9,146 ARRAY VMP VOLTS 264 264 528 231 231 462 990 ARRAY IMP AMPS 7.4 7.4 7.4 7.4 7.4 7.4 7.4 ARRAY MAX VOC VOLTS 376.6 376.6 753.2 329.5 329.5 659.0 1,412.2 ARRAY ISC AMPS 7.8 7.8 7.8 7.8 7.8 7.8 7.8 MAX AC CURRENT 25 25 50 MAX AC POWER OUTPUT 6,000 6,000 12,000 DERATED AC POWER OUTPUT 4,761 4,167 8,928 INVERTER 1 INVERTER 2 SYSTEM SUMMARY REF QTY MAKE MODEL PMAX PTC ISC IMIP VOC VMP TEMP COEFF. OF VOC FUSE RATING PM1 TO PM8 8 CANADIAN SOLAR CS1H-330MS, BLACK 330W 305W 7.79A 7.43A 41.0V 33.0V -0.119V/°C (-0.29%/°C 20A PM9 TO PM16 8 CANADIAN SOLAR CS1H-330MS, BLACK 330W 305W 7.79A 7.43A 41.0V 33.0V -0.119V/°C (-0.29%/°C 20A PM17 TO PM23 7 CANADIAN SOLAR CS1H-330MS, BLACK 330W 305W 7.79A 7.43A 41.0V 33.0V -0.119V/°C (-0.29%/°C 20A PM24 TO PM30 7 CANADIAN SOLAR CS1H-330MS, BLACK 330W 305W 7.79A 7.43A 41.0V 33.0V -0.119V/°C (-0.29%/°C 20A MODULES REF QTY MAKE MODEL AC VOLTAGE GROUND MAX OCPD RATING RATED POWER MAX OUTPUT CURRENT MAX INPUT CURRENT MAX INPUT VOLTAGE CEC WEIGHTED EFFICIENCY AMPS WATTS AMPS AMPS VOLTS % INV-1 1 SMA SB6.0-1SP-US-40 (240VAC) 240 UNGROUNDED 50 6,000 25.0 30.0 600 97.6 INV-2 1 SMA SB6.0-1SP-US-40 (240VAC) 240 UNGROUNDED 50 6,000 25.0 30.0 600 97.6 INVERTERS REF QTY MAKE MODEL MAX. INPUT CURRENT (CONTINUOUS) MAX. RATED VOLTAGE AMPS VOLTS DC RS1 1 TBD TBD 30 600 RS2 1 SMA RSB-2S-US-10 OR EQUAL 26 600 RAPID SHUTDOWN DEVICES REF QTY MAKE MODEL RATED CURRENT MAX. RATED VOLTAGE AMPS VOLTS AC SW1 & SW2 2 EATON DG222URB OR EQUAL 60 240 SW3 1 EATON DG223NRB OR EQUAL 100 240 DISCONNECTS REF QTY MAKE MODEL RATED CURRENT MAX. RATED VOLTAGE AMPS VOLTS AC CB1 & CB2 2 35 240 F1 & F2 2 70 240 OVER CURRENT PROTECTIONS DEVICES (OCPDS) KWHR AC F1-2 70A SW3 100A KWHR CB1 35A CB2 35A SW2 60A SW1 60A AC GEC ++++ --- - 11 10 9 8 5 7 11 1 5 6 1 2 1 1 2 1 4 4 5 6 LOADS UTILITY METER 240/120V, 1Φ, 3W 200A MSP W/200/A MCB PV SYSTEM DISCONNECT CUSTOMER PV GENERATION METER AC COMBINER PANEL AC DISCONNECT AC DISCONNECT INVERTER I2, 6,000W INVERTER I1, 6,000W RS1 RS2 INV-1 INV-2 PM1 - PM8 PM9 - PM16 PM17 - PM23 PM24 - PM30 330W EACH 330W EACH 330W EACH 330W EACH PV MODULES PV MODULES PV MODULES PV MODULES Brent E Crowther 8/6/23 ID TYPICAL CONDUCTOR CONDUIT/ CABLE CURRENT CARRYING CONDUCTORS IN CONDUIT/CABLE OCPD EGC TEMP. CORR. FACTOR FILL FACTOR CONT. CURRENT MAX. CURRENT (125%) BASE AMP DERATE D AMP. TERM. TEMP. RATING AMP. @ TERM. TEMP. RATING LENGTH VOLTAGE DROP AMPS AMPS AMPS AMPS °C AMPS FEET % 1 3 10 AWG PV WIRE, COPPER FREE AIR N/A N/A 6 AWG BARE COPPER 0.76 (55°C) 1.0 9.74 12.175 55 41.8 75 50 15.00 0.11% 2 1 10 AWG THWN-2, COPPER 0.75" DIA. EMT 4 N/A 10 AWG THWN-2, COPPER 0.76 (55°C) 0.8 9.74 12.175 40 24.32 90 40 40.00 0.29% 3 1 10 AWG PV WIRE, COPPER FREE AIR N/A N/A 6 AWG BARE, COPPER 0.76 (55°C) 1.0 9.74 12.175 55 41.8 75 50 25.00 0.21% 4 1 8 AWG THWN-2, COPPER 0.75" DIA. EMT 4 N/A 12 AWG THWN-2, COPPER 0.76 (55°C) 0.8 9.74 12.175 55 33.44 90 55 55.00 0.29% 5 1 8 AWG THWN-2, COPPER 1.0" DIA. EMT 4 N/A 10 AWG THWN-2, COPPER 0.96 (55°C) 0.8 25 31.25 55 42.24 75 50 5.00 0.08% 6 1 8 AWG THWN-2, COPPER 0.5" DIA. EMT 2 35A 10 AWG THWN-2, COPPER 0.96 (55°C) 1.0 25 31.25 55 52.8 75 50 4.00 0.07% 7 1 10 AWG THWN-2, COPPER 0.75" DIA. EMT 4 N/A 10 AWG THWN-2, COPPER 0.76 (55°C) 0.8 9.74 12.175 40 24.32 90 40 4.00 0.03% 8 1 8 AWG THWN-2, COPPER 0.5" DIA. EMT 2 35A 10 AWG THWN-2, COPPER 0.96 (55°C) 1.0 25 31.25 55 52.8 75 50 6.00 0.10% 9 1 6 AWG THWN-2, COPPER 0.75" DIA. EMT 2 N/A 8 AWG THWN-2, COPPER 0.96 (55°C) 1.0 50 62.5 75 72 75 65 2.00 0.04% 10 1 6 AWG THWN-2, COPPER 0.75" DIA. EMT 2 N/A 8 AWG THWN-2, COPPER 0.96 (55°C) 1.0 50 62.5 75 72 75 65 2.00 0.04% 11 1 6 AWG THWN-2, COPPER 0.75" DIA. EMT 2 70A x 2 NA 0.96 (55°C) 1.0 50 62.5 75 72 75 65 3.00 0.06% CONDUCTOR AND CONDUIT SCHDEDULE W/ELECTRICAL CALCULATIONS PAGE 4 OF 15 REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY DATE 7/31/23 TITLE SAFETY LABELS DE S C R I P T I O N CR O W T H E R R E S I D E N C E 38 5 3 W M O U N T A I N V I E W D R RE X B U R G , I D 8 3 4 4 0 GR I D - T I E D R O O F T O P S O L A R S Y S T E M DRAWN BY BEC CHECKED BY BEC DESIGNED BY BEC PROJECT NUMBER 01-23-0015 DC RACEWAYS SW3 - DISCONNECT SQUARE D, D223NRB RS1 - RAPID SHUTDOWN DEVICE I1 - INVERTER MODEL NOT SPECIFIED SMA SB 6.0-1SP-US-40 RS2 - RAPID SHUTDOWN DEVICE I2 - INVERTER MODEL NOT SPECIFIED SMA SB 6.0-1SP-US-40 SW1 - DISCONNECT PAN1 - AC AGGREGATION PANEL SQUARE D - HOM612L100RB SQUARE D - HOM612L100RB SW2 - DISCONNECT MSP - MAIN SERVICE PANEL SQUARE D - HOM612L100RB CUTLER HAMMER, 200 A, 120/240 V-1Φ-3W SAFETY LABEL GUIDE 1 3 3 4 4 4 3 3 7 2 4 4 7 7 8 9 10 11 4 5 6 4 5 11 12 11 1 3 4 5 6 7 8 9 10 11 12 INVERTER 1 INVERTER 2 SOLAR ARRAY SOLAR ARRAY SOLAR ARRAY SOLAR ARRAY DISCONNECT DISCONNECT DISCONNECT MAIN PANEL Brent E Crowther 8/6/23 PAGE 5 OF 15 REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY DATE 7/31/23 TITLE ATTACHMENT PLAN DE S C R I P T I O N CR O W T H E R R E S I D E N C E 38 5 3 W M O U N T A I N V I E W D R RE X B U R G , I D 8 3 4 4 0 GR I D - T I E D R O O F T O P S O L A R S Y S T E M DRAWN BY BEC CHECKED BY BEC DESIGNED BY BEC PROJECT NUMBER 01-23-0015 A B C D Brent E Crowther 8/6/23 PAGE 6 OF 15 REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY DATE 7/31/23 TITLE ATTACHMENT DETAILS 1 DE S C R I P T I O N CR O W T H E R R E S I D E N C E 38 5 3 W M O U N T A I N V I E W D R RE X B U R G , I D 8 3 4 4 0 GR I D - T I E D R O O F T O P S O L A R S Y S T E M DRAWN BY BEC CHECKED BY BEC DESIGNED BY BEC PROJECT NUMBER 01-23-0015 1 Risk Category II 2 Basic Wind Speed 120 mph 3 Exposre Category C a Determine Topographic Factor, Kzt 1 4 Determine Effective Wind Area 100 ft^2 5 Determine Roof Zone Zone 1 interior zones Zone 2 end zones 6 Determine Net Design Winde Pressure 21.5 -25.9 7 Determine Adjustment Factor 1.21 8 Calucalate the adjusted wind pressure, Pnet 26.015 -31.339 Snow load 50 psf 10 Description Variable Downforce Case 1 Downforce Case 2 Downforce Case 3 Uplift Units P = D + 1.0S P=D + 0.6Pnet P=D+.75S+.75(0.6Pnet) P=0.6D + 0.6Pnet Dead Load 5 D 1 x 5 1 X 5 1 X 5 .6 x D 3 psf Snow Load 50 S 1 x + S 50 .75 X + S 37.5 psf Design Wind Load 26.015 Pnet 0.6 x Pnet 15.609 19.51125 .6 x D -18.8034 psf Total Design Load Pnet 55 20.609 62.01125 15.8034 psf 11 Determine the Distribued Load on the Rail w = PB/2 Module length 65 inches = 5.4166667 feet Module Width 39.1 inches = 3.2583333 feet w 148.95833 55.816042 167.94714 42.800875 plf 12 Determine Rail Span / L Bracket Spacing, B 2 feet to 3 feet 13 Select Rail Type 15 Determine the Downforce Point Load at each connection based on rail span R = PLB/2 R = 595.83333 223.26417 671.78854 171.2035 16 Determine Required Lag Bolt Attachment Lag Screws, 5/16" Shaft Rquired Embedment Depth Specific Gravity lbs/inch thread depth (inches) Doulas Fir, Larch 266 0.6436222 inches Douglas Fir, South 235 0.7285255 inches Engelmann Spruce, Lodgepole Pine 235 0.7285255 inches Hem, Fir, Redwood (close grain) 212 0.8075637 inches Hem, Fir (North) 235 0.7285255 inches Southern Pine 307 0.5576661 inches Spruce, Pine, Fir 205 0.835139 inches Spruce, Pine, Fir (E<2M psi) 266 0.6436222 inches Brent E Crowther 8/6/23 PAGE 7 OF 15 REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY DATE 7/31/23 TITLE ATTACHMENT DETAILS 2 DE S C R I P T I O N CR O W T H E R R E S I D E N C E 38 5 3 W M O U N T A I N V I E W D R RE X B U R G , I D 8 3 4 4 0 GR I D - T I E D R O O F T O P S O L A R S Y S T E M DRAWN BY BEC CHECKED BY BEC DESIGNED BY BEC PROJECT NUMBER 01-23-0015 Brent E Crowther 8/6/23 PAGE 8 OF 15 REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY DATE 7/31/23 TITLE ATTACHMENT DETAILS 3 DE S C R I P T I O N CR O W T H E R R E S I D E N C E 38 5 3 W M O U N T A I N V I E W D R RE X B U R G , I D 8 3 4 4 0 GR I D - T I E D R O O F T O P S O L A R S Y S T E M DRAWN BY BEC CHECKED BY BEC DESIGNED BY BEC PROJECT NUMBER 01-23-0015 Brent E Crowther 8/6/23 1 3 4 2 5 PAGE 9 OF 15 REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY DATE 7/31/23 TITLE FIRE SAFETY PLAN DE S C R I P T I O N CR O W T H E R R E S I D E N C E 38 5 3 W M O U N T A I N V I E W D R RE X B U R G , I D 8 3 4 4 0 GR I D - T I E D R O O F T O P S O L A R S Y S T E M DRAWN BY BEC CHECKED BY BEC DESIGNED BY BEC PROJECT NUMBER 01-23-0015 0.0 in. 72.0 in.120.0 in. 240.0 in. 2 2 2 2 6 6 6 6 5 5 5 5 5 55 7 7 8 Brent E Crowther 8/6/23 PAGE 10 OF 15 REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY DATE 7/31/23 TITLE CODE COMPLIANCE VOLTAGE DE S C R I P T I O N CR O W T H E R R E S I D E N C E 38 5 3 W M O U N T A I N V I E W D R RE X B U R G , I D 8 3 4 4 0 GR I D - T I E D R O O F T O P S O L A R S Y S T E M DRAWN BY BEC CHECKED BY BEC DESIGNED BY BEC PROJECT NUMBER 01-23-0015 Array Type String Inverter Array System Description SMA Inverter w/16 Canadian Solar CS1H- 330MS BLACK (330W)S Highest number of modules in series in a PV circuit 8 Design Low Temperature -26 ºC Module Voltage 41V Temperature Coefficient Voc -0.119V/ºC NEC Code Calculations A Maximum Voltage of PV Source 376.55V see 690.7 © (-26ºC to 25ºC) x -0.119V/ºC + 41V = 47.07V The string Voc at the design low temperature is 376.55V. 47.07V/panel x 8 panels = 376.55V 1 PASS 376.55V < 600V = TRUE NEC Code Validation Tests PV Source Circuit maximum Voc must not exceed 600V 1.1 #1: SMA INVERTER W/16 CANADIAN SOLAR CS1H-330MS BLACK (330W)S Circuit Section Properties NEC 690.7(C) requires that if the PV module manufacturer provides a temperature coefficient of open- circuit voltage, it must be used to calculate the PV array's maximum system voltage. It includes an information note recommending the use of the ASHRAE "Extreme Annual Mean Minimum Design Dry Bulb Temperature' as the design low temperature. Using these value, the module Voc (41V) will increase to 47.07V at the design low temperature (-26ºC) Array Type String Inverter Array System Description SMA Inverter w/16 Canadian Solar CS1H- 330MS BLACK (330W)S Highest number of modules in series in a PV circuit 8 Design Low Temperature -26 ºC Module Voltage 41V Temperature Coefficient Voc -0.119V/ºC NEC Code Calculations A Maximum Voltage of PV Source 376.55V see 690.7 © (-26ºC to 25ºC) x -0.119V/ºC + 41V = 47.07V The string Voc at the design low temperature is 376.55V. 47.07V/panel x 8 panels = 376.55V 1 PASS 376.55V < 600V = TRUE 1.2 #2: SMA INVERTER W/16 CANADIAN SOLAR CS1H-330MS BLACK (330W)S Circuit Section Properties NEC 690.7(C) requires that if the PV module manufacturer provides a temperature coefficient of open- circuit voltage, it must be used to calculate the PV array's maximum system voltage. It includes an information note recommending the use of the ASHRAE "Extreme Annual Mean Minimum Design Dry Bulb Temperature' as the design low temperature. Using these value, the module Voc (41V) will increase to 47.07V at the design low temperature (-26ºC) NEC Code Validation Tests PV Source Circuit maximum Voc must not exceed 600V Array Type String Inverter Array System Description SMA Inverter w/14 Canadian Solar CS1H- 330MS BLACK (330W)S Highest number of modules in series in a PV circuit 7 Design Low Temperature -26 ºC Module Voltage 41V Temperature Coefficient Voc -0.119V/ºC NEC Code Calculations A Maximum Voltage of PV Source 329.49V see 690.7 © (-26ºC to 25ºC) x -0.119V/ºC + 41V = 47.07V The string Voc at the design low temperature is 329.49V. 47.07V/panel x 7 panels = 329.49V 1 PASS 329.49V < 600V = TRUE 1.3 #3: SMA INVERTER W/14 CANADIAN SOLAR CS1H-330MS BLACK (330W)S Circuit Section Properties NEC 690.7(C) requires that if the PV module manufacturer provides a temperature coefficient of open- circuit voltage, it must be used to calculate the PV array's maximum system voltage. It includes an information note recommending the use of the ASHRAE "Extreme Annual Mean Minimum Design Dry Bulb Temperature' as the design low temperature. Using these value, the module Voc (41V) will increase to 47.07V at the design low temperature (-26ºC) NEC Code Validation Tests PV Source Circuit maximum Voc must not exceed 600V Array Type String Inverter Array System Description SMA Inverter w/14 Canadian Solar CS1H- 330MS BLACK (330W)S Highest number of modules in series in a PV circuit 7 Design Low Temperature -26 ºC Module Voltage 41V Temperature Coefficient Voc -0.119V/ºC NEC Code Calculations A Maximum Voltage of PV Source 329.49V see 690.7 © (-26ºC to 25ºC) x -0.119V/ºC + 41V = 47.07V The string Voc at the design low temperature is 329.49V. 47.07V/panel x 7 panels = 329.49V 1 PASS 329.49V < 600V = TRUE 1.4 #4: SMA INVERTER W/14 CANADIAN SOLAR CS1H-330MS BLACK (330W)S Circuit Section Properties NEC 690.7(C) requires that if the PV module manufacturer provides a temperature coefficient of open- circuit voltage, it must be used to calculate the PV array's maximum system voltage. It includes an information note recommending the use of the ASHRAE "Extreme Annual Mean Minimum Design Dry Bulb Temperature' as the design low temperature. Using these value, the module Voc (41V) will increase to 47.07V at the design low temperature (-26ºC) NEC Code Validation Tests PV Source Circuit maximum Voc must not exceed 600V Brent E Crowther 8/6/23 PAGE 11 OF 15 REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY DATE 7/31/23 TITLE CODE COMPLIANCE SOURCE CIRCUITS DE S C R I P T I O N CR O W T H E R R E S I D E N C E 38 5 3 W M O U N T A I N V I E W D R RE X B U R G , I D 8 3 4 4 0 GR I D - T I E D R O O F T O P S O L A R S Y S T E M DRAWN BY BEC CHECKED BY BEC DESIGNED BY BEC PROJECT NUMBER 01-23-0015 Conductor 10 AWG PV Wire, Copper Equipment Ground Conductor (EGC) 6 AWG Bare, Copper OCPD(s) N/A Raceway/Cable Fee Air Lowest Terminal Temperature 75ºC Maximum Wire Temperatur 55ºC Power Source Description String of 8 CS1H-330MS Black (330W) PV Modules Current 7.79A Voltage 264V Module Series Fuse Rating 20A Total Number of Series Strings 2 NEC Code Calculations A Continuous Current 9.74 A see 690.8(A)(1) 7.79A x 1.25 = 9.74A B Ampacity of Conductor 55.0A see Table 310.15(B)(17) Ampacity (30ºC) for a copper conductor with 90ºC insulation in free air is 55A C Derated Ampacity of Conductor 41.8A see Table 310.15(B)(2)(a). Table 310.15(B)(3)(a), and Article 100 The temperature factor for 90ºC insulation at 55ºC is 0.76. The fill factor for conductors in free air is 1 55A x 0.76 x 1 - 41.8A D Max Current for Terminal Temp. Rating 35A see 110.14© The lowest temperature limit for this conductor at any termination is 75ºC E Minimum Required EGC Size 12 AWG see 690.45(A) and Table 250.122 The smallest EGC size allowed is 12 AWG for OCPD rating 20A according to Table 250.122 1 System must meet requirements for not having series fuse (690.9(A)) PASS 2 PASS 41.8A >= 9.74A = TRUE 3 Conductor Ampacity must be at least 125% of Continuous Current (215.2(A)(1)) PASS 55A > 9.74A x 1.25 = TRUE 4 Max current for terminal mus be at least 125% of the Continuous Current (110.14©) PASS 35A >= 9.74A x 1.25 = TRUE 5 EGC must meet code requirements for minimum size (Table 250.122) PASS 6 AWG >= 12 AWG = TRUE 6 EGC must meet code requirements for physical protection (690.46) PASS 6 AWG >= 6 AWG = TRUE NEC Code Validation Tests Derated Ampacity must be greater than or equal to the Continuous Current (Article 100) The ampacity derated for conditions of use is the product of the conductor ampacity (55A) multiplied by the temperature factor (0.76) and by the fill factor (1) Using the method specified in 110.14©, the maximum current permitted to ensure that the device terminal temperature does not exceed its 75ºC rating would be the amount referenced in the 75ºC column in Table 310.15(B)(16), which is 35A According to 690.45(A), it is not necessary to increase the size of the PV array's EGC when conductors are oversized for voltage drop considerations. No OCPD is used in circuit and an assumed rating of 20A has been calculated in accordance with 690.45(A) 2.1 #1: PV SOURCE CIRCUIT: SERIES STRING OUTPUT TO RAPID SHUTDOWN DEVICE Circuit Section Properties The continuous current for this PV source circuit is equal to the short circuit current of the PV module (7.79A) multiplied by 1.25 Conductor 10 AWG THWN-2, Copper Equipment Ground Conductor (EGC) 10 AWG THWN-2, Copper OCPD(s) N/A Raceway/Cable 0.75" DIA. EMT Lowest Terminal Temperature 90ºC Maximum Wire Temperatur 55ºC Power Source Description String of 8 CS1H-330MS Black (330W) PV Modules Current 7.79A Voltage 264V Module Series Fuse Rating 20A Total Number of Series Strings 2 NEC Code Calculations A Continuous Current 9.74 A see 690.8(A)(1) 7.79A x 1.25 = 9.74A B Ampacity of Conductor 40.0 A see Table 310.15(B)(16) Ampacity (30ºC) for a copper conductor with 90ºC insulation in conduit/cable is 40A C Derated Ampacity of Conductor 24.32A see Table 310.15(B)(2)(a). Table 310.15(B)(3)(a), and Article 100 The temperature factor for 90ºC insulation at 55ºC is 0.76. The fill factor for conduit/cable that has 4 wires is 0.8 40A x 0.76 x 0.8 - 24.32A D Max Current for Terminal Temp. Rating 40A see 110.14 © The lowest temperature limit for this conductor at any termination is 90ºC E Minimum Required EGC Size 12 AWG see 690.45(A) and Table 250.122 The smallest EGC size allowed is 12 AWG for OCPD rating 20A according to Table 250.122 F Minimum Recommended Conduit Size 0.75" dia. see 300.17 1 System must meet requirements for not having series fuse (690.9(A)) PASS 2 PASS 24.32A >= 9.74A = TRUE 3 Conductor Ampacity must be at least 125% of Continuous Current (215.2(A)(1)) PASS 40A > 9.74A x 1.25 = TRUE 4 Max current for terminal mus be at least 125% of the Continuous Current (110.14©) PASS 40A >= 9.74A x 1.25 = TRUE 5 EGC must meet code requirements for minimum size (Table 250.122) PASS 10 AWG >= 12 AWG = TRUE 6 Conduit must meet code recommendaton for minimum size (300.17) PASS 0.75" >= 0.75" = TRUE According to 690.45(A), it is not necessary to increase the size of the PV array's EGC when conductors are oversized for voltage drop considerations. NEC Code Validation Tests Derated Ampacity must be greater than or equal to the Continuous Current (Article 100) The total aera of all conductors is 0.1498 in2. With a maximum fill rate of 0.4, the recommended conduit diameter is 0.75" 2.2 #2: PV SOURCE CIRCUIT: RAPID SHUTDOWN DEVICE 1 TO INVERTER 1 Circuit Section Properties The continuous current for this PV source circuit is equal to the short circuit current of the PV module (7.79A) multiplied by 1.25 The ampacity derated for conditions of use is the product of the conductor ampacity (40A) multiplied by the temperature factor (0.76) and by the fill factor (0.8) Using the method specified in 110.14(C), the maximum current permitted to ensure that the device terminal temperature does not exceed its 90ºC rating would be the amount referenced in the 90ºC column in Table 310.15(B)(16), which is 40A No OCPD is used in circuit and an assumed rating of 20A has been calculated in accordance with 690.45(A) QTY DESCRIPTION SIZE TYPE AERA TOTAL AREA (AWG) (IN^2) (IN^2) 2 CONDUCTOR 10 THWN-2 0.0211 0.0422 1 EQUIPMENT GROUND 10 THWN-2 0.0211 0.0211 2 CONDUCTOR 8 THWN-2 0.0366 0.0732 1 EQUIPMENT GROUND 12 THWN-2 0.0133 0.0133 6 0.1495 Conductor 10 AWG PV Wire, Copper Equipment Ground Conductor (EGC) 6 AWG Bare, Copper OCPD(s) N/A Raceway/Cable Fee Air Lowest Terminal Temperature 75ºC Maximum Wire Temperatur 55ºC Power Source Description String of 7 CS1H-330MS Black (330W) PV Modules Current 7.79A Voltage 231V Module Series Fuse Rating 20A Total Number of Series Strings 2 NEC Code Calculations A Continuous Current 9.74 A see 690.8(A)(1) 7.79A x 1.25 = 9.74A B Ampacity of Conductor 55.0A see Table 310.15(B)(17) Ampacity (30ºC) for a copper conductor with 90ºC insulation in free air is 55A C Derated Ampacity of Conductor 41.8A see Table 310.15(B)(2)(a). Table 310.15(B)(3)(a), and Article 100 The temperature factor for 90ºC insulation at 55ºC is 0.76. The fill factor for conductors in free air is 1 55A x 0.76 x 1 - 41.8A D Max Current for Terminal Temp. Rating 35A see 110.14 © The lowest temperature limit for this conductor at any termination is 75ºC E Minimum Required EGC Size 12 AWG see 690.45(A) and Table 250.122 The smallest EGC size allowed is 12 AWG for OCPD rating 20A according to Table 250.122 1 System must meet requirements for not having series fuse (690.9(A)) PASS 2 PASS 41.8A >= 9.74A = TRUE 3 Conductor Ampacity must be at least 125% of Continuous Current (215.2(A)(1)) PASS 55A > 9.74A x 1.25 = TRUE 4 Max current for terminal mus be at least 125% of the Continuous Current (110.14©) PASS 35A >= 9.74A x 1.25 = TRUE 5 EGC must meet code requirements for minimum size (Table 250.122) PASS 6 AWG >= 12 AWG = TRUE 6 EGC must meet code requirements for physical protection (690.46) PASS 6 AWG >= 6 AWG = TRUE According to 690.45(A), it is not necessary to increase the size of the PV array's EGC when conductors are oversized for voltage drop considerations. NEC Code Validation Tests Derated Ampacity must be greater than or equal to the Continuous Current (Article 100) 2.1 #3: PV SOURCE CIRCUIT: SERIES STRING OUTPUT TO RAPID SHUTDOWN DEVICE 2 Circuit Section Properties The continuous current for this PV source circuit is equal to the short circuit current of the PV module (7.79A) multiplied by 1.25 The ampacity derated for conditions of use is the product of the conductor ampacity (55A) multiplied by the temperature factor (0.76) and by the fill factor (1) Using the method specified in 110.14©, the maximum current permitted to ensure that the device terminal temperature does not exceed its 75ºC rating would be the amount referenced in the 75ºC column in Table 310.15(B)(16), which is 35A No OCPD is used in circuit and an assumed rating of 20A has been calculated in accordance with 690.45(A) Conductor 8 AWG THWN-2, Copper Equipment Ground Conductor (EGC) 12 AWG THWN-2, Copper OCPD(s) N/A Raceway/Cable 0.75" DIA. EMT Lowest Terminal Temperature 90ºC Maximum Wire Temperatur 55ºC Power Source Description String of 7 CS1H-330MS Black (330W) PV Modules Current 7.79A Voltage 231V Module Series Fuse Rating 20A Total Number of Series Strings 2 NEC Code Calculations A Continuous Current 9.74 A see 690.8(A)(1) 7.79A x 1.25 = 9.74A B Ampacity of Conductor 55.0 A see Table 310.15(B)(16) Ampacity (30ºC) for a copper conductor with 90ºC insulation in conduit/cable is 40A C Derated Ampacity of Conductor 33.44A see Table 310.15(B)(2)(a). Table 310.15(B)(3)(a), and Article 100 The temperature factor for 90ºC insulation at 55ºC is 0.76. The fill factor for conduit/cable that has 4 wires is 0.8 55A x 0.76 x 0.8 - 24.32A D Max Current for Terminal Temp. Rating 55A see 110.14 © The lowest temperature limit for this conductor at any termination is 90ºC E Minimum Required EGC Size 12 AWG see 690.45(A) and Table 250.122 The smallest EGC size allowed is 12 AWG for OCPD rating 20A according to Table 250.122 F Minimum Recommended Conduit Size 0.75" dia. see 300.17 1 System must meet requirements for not having series fuse (690.9(A)) PASS 2 PASS 33.44A >= 9.74A = TRUE 3 Conductor Ampacity must be at least 125% of Continuous Current (215.2(A)(1)) PASS 55A > 9.74A x 1.25 = TRUE 4 Max current for terminal mus be at least 125% of the Continuous Current (110.14©) PASS 55A >= 9.74A x 1.25 = TRUE 5 EGC must meet code requirements for minimum size (Table 250.122) PASS 12 AWG >= 12 AWG = TRUE 6 Conduit must meet code recommendaton for minimum size (300.17) PASS 0.75" >= 0.75" = TRUE According to 690.45(A), it is not necessary to increase the size of the PV array's EGC when conductors are oversized for voltage drop considerations. The total aera of all conductors is 0.1498 in2. With a maximum fill rate of 0.4, the recommended conduit diameter is 0.75" NEC Code Validation Tests Derated Ampacity must be greater than or equal to the Continuous Current (Article 100) 2.2 #4: PV SOURCE CIRCUIT: RAPID SHUTDOWN DEVICE 2 TO INVERTER 2 Circuit Section Properties The continuous current for this PV source circuit is equal to the short circuit current of the PV module (7.79A) multiplied by 1.25 The ampacity derated for conditions of use is the product of the conductor ampacity (40A) multiplied by the temperature factor (0.76) and by the fill factor (0.8) Using the method specified in 110.14(C), the maximum current permitted to ensure that the device terminal temperature does not exceed its 90ºC rating would be the amount referenced in the 90ºC column in Table 310.15(B)(16), which is 55A No OCPD is used in circuit and an assumed rating of 20A has been calculated in accordance with 690.45(A) QTY DESCRIPTION SIZE TYPE AERA TOTAL AREA (AWG) (IN^2) (IN^2) 2 CONDUCTOR 10 THWN-2 0.0211 0.0422 1 EQUIPMENT GROUND 10 THWN-2 0.0211 0.0211 2 CONDUCTOR 8 THWN-2 0.0366 0.0732 1 EQUIPMENT GROUND 12 THWN-2 0.0133 0.0133 6 0.1498 Brent E Crowther 8/6/23 PAGE 12 OF 15 REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY DATE 7/31/23 TITLE CONDUCTOR, CONDUIT, OCPD SIZING VALIDATION DE S C R I P T I O N CR O W T H E R R E S I D E N C E 38 5 3 W M O U N T A I N V I E W D R RE X B U R G , I D 8 3 4 4 0 GR I D - T I E D R O O F T O P S O L A R S Y S T E M DRAWN BY BEC CHECKED BY BEC DESIGNED BY BEC PROJECT NUMBER 01-23-0015 Conductor 8 AWG THWN-2, Copper Equipment Ground Conductor (EGC) 10 AWG THWN-2, Copper OCPD(s) N/A Raceway/Cable 1.00" DIA. EMT Lowest Terminal Temperature 75ºC Maximum Wire Temperature 33ºC Power Source Description SMA SB 6.0-1SP-US-40 6000W INVERTER Current 25A Voltage 240V Inverter Max OCPD Rating 50A NEC Code Calculations A Continuous Current 25 A see Article 100 B Ampacity of Conductor 55.0A see Table 310.15(B)(16) Ampacity (30ºC) for a copper conductor with 90ºC insulation in free air is 55A C Derated Ampacity of Conductor 42.24A see Table 310.15(B)(2)(a). Table 310.15(B)(3)(a), and Article 100 The temperature factor for 33ºC insulation at 55ºC is 0.96. The fill factor for a conduit/cable that has 4 wires is 0.8. 55A x 0.96 x 0.8 - 42.24A D Max Current for Terminal Temp. Rating 50A see 110.14 (C) The lowest temperature limit for this conductor at any termination is 75ºC E Minimum Allowed OCPD Rating 31 A see 690.45(A) and Table 250.122 F Minimum Required EGC Size 10 AWG see Table 250.122 The smallest EGC size allowed is 10 AWG for OCPD rating 35A according to Table 250.122 F Minimum Recommended Conduit Size 0.75" dia. see 300.17 1 OCPD rating must be at least 125% of Continuous Current (240.4) PASS 35A >= 25A x 1.25 = TRUE 2 PASS 42.4A >= 35A (OCPD rating) = TRUE 3 PASS 42.4A >= 25A = TRUE 4 Conductor Ampacity must be at least 125% of Continuous Current (215.2(A)(1)) PASS 55A > 25A x 1.25 = TRUE 5 Max current for terminal must be at least 125% of the Continuous Current (110.14 (C)) PASS 50A >= 25A x 1.25 = TRUE 6 EGC must meet code requirements for minimum size (Table 250.122) PASS 10 AWG >= 10 AWG = TRUE 7 Conduit must meet code recommendation for minimu size (300.17) PASS 1" >= 1" = TRUE The total aera of all conductors is 0.1498 in2. With a maximum fill rate of 0.4, the recommended conduit diameter is 0.75" NEC Code Validation Tests Derated Ampacity must exceed OCPD rating, or rating of next smaller OCPD (240.4) Derated Ampacity must be greater than or equal to the Continuous Current (Article 100) 25A x 1.25 = 31.25A rounded down to 31A Equipment maximum rated output current is 2 x 7.79A = 25A 2.1 #5: INVERTER OUTPUT: INVERTER 1 TO AC DISCONNECT Circuit Section Properties The ampacity derated for conditions of use is the product of the conductor ampacity (55A) multiplied by the temperature factor (0.96) and by the fill factor (0.8) Using the method specified in 110.14 (C), the maximum current permitted to ensure that the device terminal temperature does not exceed its 75ºC rating would be the amount referenced in the 75ºC column in Table 310.15(B)(16), which is 50A NEC 690.9(B) requires that the OCPD be rated for no less than 1.25 times the Continuous Current of the circuit. QTY DESCRIPTION SIZE TYPE AERA TOTAL AREA (AWG) (IN^2) (IN^2) 4 CONDUCTOR 8 THWN-2 0.0366 0.1464 2 NEUTRAL 10 THWN-2 0.0211 0.0422 2 EQUIPMENT GROUND 10 THWN-2 0.0211 0.0422 8 0.2308 Conductor 8 AWG THWN-2, Copper Equipment Ground Conductor (EGC) 10 AWG THWN-2, Copper OCPD(s) 35a Raceway/Cable 0.5" DIA. EMT Lowest Terminal Temperature 75ºC Maximum Wire Temperature 33ºC Power Source Description SMA SB 6.0-1SP-US-40 6000W INVERTER Current 25A Voltage 240V NEC Code Calculations A Continuous Current 25 A see Article 100 B Ampacity of Conductor 55.0 A see Table 310.15(B)(16) Ampacity (30ºC) for a copper conductor with 90ºC insulation in free air is 55A C Derated Ampacity of Conductor 52.80 A see Table 310.15(B)(2)(a). Table 310.15(B)(3)(a), and Article 100 The temperature factor for 33ºC insulation at 55ºC is 0.96. The fill factor for a conduit/cable that has 2 wires is 1.0. 55A x 0.96 x 1.0 = 52.80A D Max Current for Terminal Temp. Rating 50 A see 110.14 (C) The lowest temperature limit for this conductor at any termination is 75ºC E Minimum Allowed OCPD Rating 31 A see 690.45(A) and Table 250.122 F Minimum Required EGC Size 10 AWG see Table 250.122 The smallest EGC size allowed is 10 AWG for OCPD rating 35A according to Table 250.122 F Minimum Recommended Conduit Size 0.50" dia. see 300.17 1 OCPD rating must be at least 125% of Continuous Current (240.4) PASS 35A >= 25A x 1.25 = TRUE 2 PASS 52.80A >= 35A (OCPD rating) = TRUE 3 PASS 52.80A >= 25A = TRUE 4 Conductor Ampacity must be at least 125% of Continuous Current (215.2(A)(1)) PASS 55A > 25A x 1.25 = TRUE 5 Max current for terminal must be at least 125% of the Continuous Current (110.14 (C)) PASS 50A >= 25A x 1.25 = TRUE 6 EGC must meet code requirements for minimum size (Table 250.122) PASS 10 AWG >= 10 AWG = TRUE 7 Conduit must meet code recommendation for minimu size (300.17) PASS 0.5" >= 0.5" = TRUE 25A x 1.25 = 31.25A rounded down to 31A The total aera of all conductors is 0.0943 in2. With a maximum fill rate of 0.4, the recommended conduit diameter is 0.50" NEC Code Validation Tests Derated Ampacity must exceed OCPD rating, or rating of next smaller OCPD (240.4) Derated Ampacity must be greater than or equal to the Continuous Current (Article 100) 2.1 #6: AC DISCONNECT OUTPUT: AC DISCONNECT TO AC AGGREGATION PANEL Circuit Section Properties Equipment maximum rated output current is 2 x 7.79A = 25A The ampacity derated for conditions of use is the product of the conductor ampacity (55A) multiplied by the temperature factor (0.96) and by the fill factor (1.0) Using the method specified in 110.14 (C), the maximum current permitted to ensure that the device terminal temperature does not exceed its 75ºC rating would be the amount referenced in the 75ºC column in Table 310.15(B)(16), which is 50A NEC 690.9(B) requires that the OCPD be rated for no less than 1.25 times the Continuous Current of the circuit. QTY DESCRIPTION SIZE TYPE AERA TOTAL AREA (AWG) (IN^2) (IN^2) 2 CONDUCTOR 8 THWN-2 0.0366 0.0732 1 EQUIPMENT GROUND 10 THWN-2 0.0211 0.0211 3 0.0943 Conductor 10 AWG THWN-2, Copper Equipment Ground Conductor (EGC) 10 AWG THWN-2, Copper OCPD(s) N/A Raceway/Cable 0.75" DIA. EMT Lowest Terminal Temperature 90ºC Maximum Wire Temperatur 55ºC Power Source Description String of 8 CS1H-330MS Black (330W) PV Modules Current 7.79A Voltage 264V Module Series Fuse Rating 20A Total Number of Series Strings 2 NEC Code Calculations A Continuous Current 9.74 A see 690.8(A)(1) 7.79A x 1.25 = 9.74A B Ampacity of Conductor 40.0 A see Table 310.15(B)(16) Ampacity (30ºC) for a copper conductor with 90ºC insulation in conduit/cable is 40A C Derated Ampacity of Conductor 24.32A see Table 310.15(B)(2)(a). Table 310.15(B)(3)(a), and Article 100 The temperature factor for 90ºC insulation at 55ºC is 0.76. The fill factor for conduit/cable that has 4 wires is 0.8 40A x 0.76 x 0.8 - 24.32A D Max Current for Terminal Temp. Rating 40A see 110.14 © The lowest temperature limit for this conductor at any termination is 90ºC E Minimum Required EGC Size 12 AWG see 690.45(A) and Table 250.122 The smallest EGC size allowed is 12 AWG for OCPD rating 20A according to Table 250.122 F Minimum Recommended Conduit Size 0.75" dia. see 300.17 1 System must meet requirements for not having series fuse (690.9(A)) PASS 2 PASS 24.32A >= 9.74A = TRUE 3 Conductor Ampacity must be at least 125% of Continuous Current (215.2(A)(1)) PASS 40A > 9.74A x 1.25 = TRUE 4 Max current for terminal mus be at least 125% of the Continuous Current (110.14©) PASS 40A >= 9.74A x 1.25 = TRUE 5 EGC must meet code requirements for minimum size (Table 250.122) PASS 10 AWG >= 12 AWG = TRUE 6 Conduit must meet code recommendaton for minimum size (300.17) PASS 0.75" >= 0.75" = TRUE According to 690.45(A), it is not necessary to increase the size of the PV array's EGC when conductors are oversized for voltage drop considerations. The total aera of all conductors is 0.1498 in2. With a maximum fill rate of 0.4, the recommended conduit diameter is 0.75" NEC Code Validation Tests Derated Ampacity must be greater than or equal to the Continuous Current (Article 100) 2.2 #7: PV SOURCE CIRCUIT: RAPID SHUTDOWN DEVICE 2 TO INVERTER 2 Circuit Section Properties The continuous current for this PV source circuit is equal to the short circuit current of the PV module (7.79A) multiplied by 1.25 The ampacity derated for conditions of use is the product of the conductor ampacity (40A) multiplied by the temperature factor (0.76) and by the fill factor (0.8) Using the method specified in 110.14(C), the maximum current permitted to ensure that the device terminal temperature does not exceed its 90ºC rating would be the amount referenced in the 90ºC column in Table 310.15(B)(16), which is 40A No OCPD is used in circuit and an assumed rating of 20A has been calculated in accordance with 690.45(A) QTY DESCRIPTION SIZE TYPE AERA TOTAL AREA (AWG) (IN^2) (IN^2) 4 CONDUCTOR 10 THWN-2 0.0211 0.0844 2 EQUIPMENT GROUND 10 THWN-2 0.0211 0.0422 6 0.1266 Conductor 8 AWG THWN-2, Copper Equipment Ground Conductor (EGC) 10 AWG THWN-2, Copper OCPD(s) 35a Raceway/Cable 0.5" DIA. EMT Lowest Terminal Temperature 75ºC Maximum Wire Temperature 33ºC Power Source Description SMA SB 6.0-1SP-US-40 6000W INVERTER Current 25A Voltage 240V NEC Code Calculations A Continuous Current 25 A see Article 100 B Ampacity of Conductor 55.0 A see Table 310.15(B)(16) Ampacity (30ºC) for a copper conductor with 90ºC insulation in free air is 55A C Derated Ampacity of Conductor 52.80 A see Table 310.15(B)(2)(a). Table 310.15(B)(3)(a), and Article 100 The temperature factor for 33ºC insulation at 55ºC is 0.96. The fill factor for a conduit/cable that has 2 wires is 1.0. 55A x 0.96 x 1.0 = 52.80A D Max Current for Terminal Temp. Rating 50 A see 110.14 (C) The lowest temperature limit for this conductor at any termination is 75ºC E Minimum Allowed OCPD Rating 31 A see 690.45(A) and Table 250.122 F Minimum Required EGC Size 10 AWG see Table 250.122 The smallest EGC size allowed is 10 AWG for OCPD rating 35A according to Table 250.122 F Minimum Recommended Conduit Size 0.50" dia. see 300.17 1 OCPD rating must be at least 125% of Continuous Current (240.4) PASS 35A >= 25A x 1.25 = TRUE 2 PASS 52.80A >= 35A (OCPD rating) = TRUE 3 PASS 52.80A >= 25A = TRUE 4 Conductor Ampacity must be at least 125% of Continuous Current (215.2(A)(1)) PASS 55A > 25A x 1.25 = TRUE 5 Max current for terminal must be at least 125% of the Continuous Current (110.14 (C)) PASS 50A >= 25A x 1.25 = TRUE 6 EGC must meet code requirements for minimum size (Table 250.122) PASS 10 AWG >= 10 AWG = TRUE 7 Conduit must meet code recommendation for minimu size (300.17) PASS 0.5" >= 0.5" = TRUE 25A x 1.25 = 31.25A rounded down to 31A The total aera of all conductors is 0.0943 in2. With a maximum fill rate of 0.4, the recommended conduit diameter is 0.50" NEC Code Validation Tests Derated Ampacity must exceed OCPD rating, or rating of next smaller OCPD (240.4) Derated Ampacity must be greater than or equal to the Continuous Current (Article 100) 2.1 #8: AC DISCONNECT OUTPUT: AC DISCONNECT TO AC AGGREGATION PANEL Circuit Section Properties Equipment maximum rated output current is 2 x 7.79A = 25A The ampacity derated for conditions of use is the product of the conductor ampacity (55A) multiplied by the temperature factor (0.96) and by the fill factor (1.0) Using the method specified in 110.14 (C), the maximum current permitted to ensure that the device terminal temperature does not exceed its 75ºC rating would be the amount referenced in the 75ºC column in Table 310.15(B)(16), which is 50A NEC 690.9(B) requires that the OCPD be rated for no less than 1.25 times the Continuous Current of the circuit. QTY DESCRIPTION SIZE TYPE AERA TOTAL AREA (AWG) (IN^2) (IN^2) 2 CONDUCTOR 8 THWN-2 0.0366 0.0732 1 EQUIPMENT GROUND 10 THWN-2 0.0211 0.0211 3 0.0943 Brent E Crowther 8/6/23 PAGE 13 OF 15 REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY DATE 7/31/23 TITLE CONDUCTOR, CONDUIT, OCPD SIZING VALIDATION DE S C R I P T I O N CR O W T H E R R E S I D E N C E 38 5 3 W M O U N T A I N V I E W D R RE X B U R G , I D 8 3 4 4 0 GR I D - T I E D R O O F T O P S O L A R S Y S T E M DRAWN BY BEC CHECKED BY BEC DESIGNED BY BEC PROJECT NUMBER 01-23-0015 Conductor 6 AWG THWN-2, Copper Equipment Ground Conductor (EGC) 8 AWG THWN-2, Copper OCPD(s) N/A Raceway/Cable 0.75" DIA. EMT Lowest Terminal Temperature 75ºC Maximum Wire Temperature 33ºC Power Source Description (2) SMA SB 6.0-1SP-US-40 6000W INVERTERS Current 50A Voltage 240V NEC Code Calculations A Continuous Current 50 A see Article 100 B Ampacity of Conductor 75 A see Table 310.15(B)(16) Ampacity (30ºC) for a copper conductor with 90ºC insulation in conduit/cable is 75A C Derated Ampacity of Conductor 72 A see Table 310.15(B)(2)(a). Table 310.15(B)(3)(a), and Article 100 The temperature factor for 90ºC insulation at 33ºC is 0.96. The fill factor for a conduit/cable that has 2 wires is 1.0. 75A x 0.96 x 1.0 = 72.00A D Max Current for Terminal Temp. Rating 65 A see 110.14 (C) The lowest temperature limit for this conductor at any termination is 75ºC E Minimum Allowed OCPD Rating 62 A see 690.45(A) and Table 250.122 F Minimum Required EGC Size 8 AWG see Table 250.122 The smallest EGC size allowed is 8 AWG for OCPD rating 70A according to Table 250.122 F Minimum Recommended Conduit Size 0.75" dia. see 300.17 1 OCPD rating must be at least 125% of Continuous Current (240.4) PASS 70A >= 50A x 1.25 = TRUE 2 PASS 72.00A >= 70A (OCPD rating) = TRUE 3 PASS 72.00A >= 50A = TRUE 4 Conductor Ampacity must be at least 125% of Continuous Current (215.2(A)(1)) PASS 75A > 50A x 1.25 = TRUE 5 Max current for terminal must be at least 125% of the Continuous Current (110.14 (C)) PASS 65A >= 50A x 1.25 = TRUE 6 EGC must meet code requirements for minimum size (Table 250.122) PASS 8 AWG >= 8 AWG = TRUE 7 Conduit must meet code recommendation for minimu size (300.17) PASS 0.75" >= 0.75" = TRUE 50A x 1.25 = 62.50A rounded down to 62A The total aera of all conductors is 0.1746 in2. With a maximum fill rate of 0.4, the recommended conduit diameter is 0.75" NEC Code Validation Tests Derated Ampacity must exceed OCPD rating, or rating of next smaller OCPD (240.4) Derated Ampacity must be greater than or equal to the Continuous Current (Article 100) #9: COMBINED OUTPUT OF INVERTERS: AC AGGREGATION PANEL TO PV GENERATION METER Circuit Section Properties Equipment maximum rated output current is 2 x 25.0 = 50A The ampacity derated for conditions of use is the product of the conductor ampacity (75A) multiplied by the temperature factor (0.96) and by the fill factor (1.0) Using the method specified in 110.14 (C), the maximum current permitted to ensure that the device terminal temperature does not exceed its 75ºC rating would be the amount referenced in the 75ºC column in Table 310.15(B)(16), which is 65A NEC 690.9(B) requires that the OCPD be rated for no less than 1.25 times the Continuous Current of the circuit. QTY DESCRIPTION SIZE TYPE AERA TOTAL AREA (AWG) (IN^2) (IN^2) 2 CONDUCTOR 6 THWN-2 0.0507 0.1014 1 NEUTRAL 8 THWN-2 0.0366 0.0366 1 EQUIPMENT GROUND 8 THWN-2 0.0366 0.0366 4 0.1746 Conductor 6 AWG THWN-2, Copper Equipment Ground Conductor (EGC) 8 AWG THWN-2, Copper OCPD(s) N/A Raceway/Cable 0.75" DIA. EMT Lowest Terminal Temperature 75ºC Maximum Wire Temperature 33ºC Power Source Description (2) SMA SB 6.0-1SP-US-40 6000W INVERTERS Current 50A Voltage 240V NEC Code Calculations A Continuous Current 50 A see Article 100 B Ampacity of Conductor 75 A see Table 310.15(B)(16) Ampacity (30ºC) for a copper conductor with 90ºC insulation in conduit/cable is 75A C Derated Ampacity of Conductor 72 A see Table 310.15(B)(2)(a). Table 310.15(B)(3)(a), and Article 100 The temperature factor for 90ºC insulation at 33ºC is 0.96. The fill factor for a conduit/cable that has 2 wires is 1.0. 75A x 0.96 x 1.0 = 72.00A D Max Current for Terminal Temp. Rating 65 A see 110.14 (C) The lowest temperature limit for this conductor at any termination is 75ºC E Minimum Allowed OCPD Rating 62 A see 690.45(A) and Table 250.122 F Minimum Required EGC Size 8 AWG see Table 250.122 The smallest EGC size allowed is 8 AWG for OCPD rating 70A according to Table 250.122 F Minimum Recommended Conduit Size 0.75" dia. see 300.17 1 OCPD rating must be at least 125% of Continuous Current (240.4) PASS 70A >= 50A x 1.25 = TRUE 2 PASS 72.00A >= 70A (OCPD rating) = TRUE 3 PASS 72.00A >= 50A = TRUE 4 Conductor Ampacity must be at least 125% of Continuous Current (215.2(A)(1)) PASS 75A > 50A x 1.25 = TRUE 5 Max current for terminal must be at least 125% of the Continuous Current (110.14 (C)) PASS 65A >= 50A x 1.25 = TRUE 6 EGC must meet code requirements for minimum size (Table 250.122) PASS 8 AWG >= 8 AWG = TRUE 7 Conduit must meet code recommendation for minimu size (300.17) PASS 0.75" >= 0.75" = TRUE 50A x 1.25 = 62.50A rounded down to 62A The total aera of all conductors is 0.1746 in2. With a maximum fill rate of 0.4, the recommended conduit diameter is 0.75" NEC Code Validation Tests Derated Ampacity must exceed OCPD rating, or rating of next smaller OCPD (240.4) Derated Ampacity must be greater than or equal to the Continuous Current (Article 100) #10: PRODUCTION METER OUTPUT: PV GENERATION METER TO UTILITY METER Circuit Section Properties Equipment maximum rated output current is 2 x 25.0 = 50A The ampacity derated for conditions of use is the product of the conductor ampacity (75A) multiplied by the temperature factor (0.96) and by the fill factor (1.0) Using the method specified in 110.14 (C), the maximum current permitted to ensure that the device terminal temperature does not exceed its 75ºC rating would be the amount referenced in the 75ºC column in Table 310.15(B)(16), which is 65A NEC 690.9(B) requires that the OCPD be rated for no less than 1.25 times the Continuous Current of the circuit. QTY DESCRIPTION SIZE TYPE AERA TOTAL AREA (AWG) (IN^2) (IN^2) 2 CONDUCTOR 6 THWN-2 0.0507 0.1014 1 NEUTRAL 8 THWN-2 0.0366 0.0366 1 EQUIPMENT GROUND 8 THWN-2 0.0366 0.0366 4 0.1746 Conductor 6 AWG THWN-2, Copper Equipment Ground Conductor (EGC) N/A OCPD(s) 70A x (2) Raceway/Cable 0.75" DIA. EMT Lowest Terminal Temperature 75ºC Maximum Wire Temperature 33ºC Power Source Description W/30 CANADIAN SOLAR CS1H-330MS BLACK (330W) Current 50A Voltage 240V NEC Code Calculations A Continuous Current 50 A see Article 100 B Ampacity of Conductor 75 A see Table 310.15(B)(16) Ampacity (30ºC) for a copper conductor with 90ºC insulation in conduit/cable is 75A C Derated Ampacity of Conductor 72 A see Table 310.15(B)(2)(a). Table 310.15(B)(3)(a), and Article 100 The temperature factor for 90ºC insulation at 33ºC is 0.96. The fill factor for a conduit/cable that has 2 wires is 1.0. 75A x 0.96 x 1.0 = 72.00A D Max Current for Terminal Temp. Rating 65 A see 110.14 (C) The lowest temperature limit for this conductor at any termination is 75ºC E Minimum Allowed OCPD Rating 62 A see 690.45(A) and Table 250.122 F Minimum Required EGC Size 8 AWG see Table 250.122 The smallest EGC size allowed is 8 AWG for OCPD rating 70A according to Table 250.122 F Minimum Recommended Conduit Size 0.75" dia. see 300.17 1 OCPD rating must be at least 125% of Continuous Current (240.4) PASS 70A >= 50A x 1.25 = TRUE 2 PASS 72.00A >= 70A (OCPD rating) = TRUE 3 PASS 72.00A >= 50A = TRUE 4 Conductor Ampacity must be at least 125% of Continuous Current (215.2(A)(1)) PASS 75A > 50A x 1.25 = TRUE 5 Max current for terminal must be at least 125% of the Continuous Current (110.14 (C)) PASS 65A >= 50A x 1.25 = TRUE 6 Conduit must meet code recommendation for minimu size (300.17) PASS 0.75" >= 0.75" = TRUE 50A x 1.25 = 62.50A rounded down to 62A The total aera of all conductors is 0.1746 in2. With a maximum fill rate of 0.4, the recommended conduit diameter is 0.75" NEC Code Validation Tests Derated Ampacity must exceed OCPD rating, or rating of next smaller OCPD (240.4) Derated Ampacity must be greater than or equal to the Continuous Current (Article 100) #11: UTILITY DISCONNECT OUTPUT: UTILITY DISCONNECT TO MAIN SERVICE PANEL Circuit Section Properties Equipment maximum rated output current is 2 x 25.0 = 50A The ampacity derated for conditions of use is the product of the conductor ampacity (75A) multiplied by the temperature factor (0.96) and by the fill factor (1.0) Using the method specified in 110.14 (C), the maximum current permitted to ensure that the device terminal temperature does not exceed its 75ºC rating would be the amount referenced in the 75ºC column in Table 310.15(B)(16), which is 65A NEC 690.9(B) requires that the OCPD be rated for no less than 1.25 times the Continuous Current of the circuit. QTY DESCRIPTION SIZE TYPE AERA TOTAL AREA (AWG) (IN^2) (IN^2) 2 CONDUCTOR 6 THWN-2 0.0507 0.1014 1 NEUTRAL 8 THWN-2 0.0366 0.0366 3 0.138 Brent E Crowther 8/6/23 PAGE 14 OF 15 REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY DATE 7/31/23 TITLE PHOTOVOLTAIC PANELS DE S C R I P T I O N CR O W T H E R R E S I D E N C E 38 5 3 W M O U N T A I N V I E W D R RE X B U R G , I D 8 3 4 4 0 GR I D - T I E D R O O F T O P S O L A R S Y S T E M DRAWN BY BEC CHECKED BY BEC DESIGNED BY BEC PROJECT NUMBER 01-23-0015 Brent E Crowther 8/6/23 PAGE 15 OF 15 REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY DATE 7/31/23 TITLE PHOTOVOLTAIC INVERTER 1 DE S C R I P T I O N CR O W T H E R R E S I D E N C E 38 5 3 W M O U N T A I N V I E W D R RE X B U R G , I D 8 3 4 4 0 GR I D - T I E D R O O F T O P S O L A R S Y S T E M DRAWN BY BEC CHECKED BY BEC DESIGNED BY BEC PROJECT NUMBER 01-23-0015 Brent E Crowther 8/6/23 PAGE 16 OF 15 REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY DATE 7/31/23 TITLE PHOTOVOLTAIC INVERTER 2 DE S C R I P T I O N CR O W T H E R R E S I D E N C E 38 5 3 W M O U N T A I N V I E W D R RE X B U R G , I D 8 3 4 4 0 GR I D - T I E D R O O F T O P S O L A R S Y S T E M DRAWN BY BEC CHECKED BY BEC DESIGNED BY BEC PROJECT NUMBER 01-23-0015 Brent E Crowther 8/6/23 PAGE 17 OF 15 REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY REV. DESCRIPTION DATE BY DATE 7/31/23 TITLE RAPID SHUTDOWN DE S C R I P T I O N CR O W T H E R R E S I D E N C E 38 5 3 W M O U N T A I N V I E W D R RE X B U R G , I D 8 3 4 4 0 GR I D - T I E D R O O F T O P S O L A R S Y S T E M DRAWN BY BEC CHECKED BY BEC DESIGNED BY BEC PROJECT NUMBER 01-23-0015 Brent E Crowther 8/6/23