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REQUIRED SIGNAGE <br />1. LABEL FOR SOLAR DC DISCONNECT: 690.14(C)(2) <br />SOLAR DC DISCONNECT <br />2. LABEL FOR SOLAR DC DISCONNECT: 690:53 <br />MPPT 1 <br />OPERATING CURRENT: 12.0 ADC <br />OPERATING VOLTAGE: 273.5 VDC <br />MAXIMUM SYSTEM VOLTAGE: 344.8 VDC <br />MAXIMUM SYSTEM CURRENT: 16.2 ADC <br />MPPT 2 <br />OPERATING CURRENT: 6.0 ADC <br />OPERATING VOLTAGE: 273.5 VDC <br />MAXIMUM SYSTEM VOLTAGE: 344.8 VDC <br />MAXIMUM SYSTEM CURRENT: 8.1 ADC <br />3. LABEL FOR JUNCTION BOX: 690.35(F) <br />WARNING! <br />ELECTRIC SHOCK HAZARD <br />IF A GROUND FAULT IS INDICATED, NORMALLY <br />GROUNDED CONDUCTORS MAY BE UNGROUNDED <br />AND ENERGIZED <br />4. PROVIDE A PLACARD WITH THE FOLLOWING <br />WORDING IN 1/4" HIGH LETTERING <br />LABEL FOR SOLAR AC DISCONNECT: 690.17(4) <br />WARNING! <br />ELECTRICAL SHOCK HAZARD <br />DO NOT TOUCH TERMINALS. TERMINALS ON BOTH <br />THE LINE AND LOAD SIDES MAY BE ENERGIZED IN <br />THE OPEN POSITION <br />5. LABEL FOR SOLAR AC DISCONNECT: 690.14(C)(2) <br />SOLAR AC DISCONNECT <br />6. LABEL FOR INSIDE MAIN SERVICE PANEL: 690.64(B)(7) <br />WARNING! <br />INVERTER OUTPUT CONNECTION <br />DO NOT RELOCATE THIS OVERCURRENT DEVICE <br />FIRE DEPARTMENT REQUIRED SIGNAGE <br />7. THE FOLLOWING SIGNAGE MUST HAVE A MINIMUM <br />OF 3/8" HIGH LETTERING, IN ARIAL FONT(NON-BOLD), <br />WITH CAPITAL LETTERS, WHITE ON RED BACKGROUND <br />AND ON A REFLECTIVE, WEATHER RESISTANT MATERAL. <br />AT THE MAIN SERVICE DISCONNECT PROVIDE A SIGN <br />WITH THE FOLLOWING WORDING: <br />CAUTION <br />SOLAR ELECTRIC SYSTEM CONNECTED <br />THE SIGN SHOULD BE PLACED ON THE OUTSIDE COVER <br />IF THE MAIN SERVICE DISCONNECT IS OPERABLE WITH <br />THE SERVICE PANEL CLOSED <br />8. ON ALL INVERTER AND EXTERIOR PV CONDUIT, <br />RACEWAYS, ENCLOSURES, CABLE ASSEMBLIES AND <br />JUNCTION BOXES PROVIDE A SIGN WITH THE FOLLOWING <br />WORDING: <br />CAUTION <br />SOLAR CIRCUIT <br />MARKING SHALL BE PLACED EVERY 10 FEET AT TURNS <br />AND ABOVE AND/ OR BELOW PENETRATIONS AND AT <br />ALL PV COMBINER AND JUNCTION BOXES. <br />ELECTRICAL CALCULATIONS MPPT 1 <br />OPERATION VOLTAGE= 5 X 54.7= 273.5 V <br />OPERATING CURRENT= 2 X 5.98= 12.0 A <br />MAX PV VOLTAGE & CURRENT CALC'S <br />RECORD LOW TEMP.(°C): 2 <br />TEMP.COEFF (V/°C): -0.1766 <br />OPEN CIRCUIT VOLTAGE(Voc): 64.9 <br />MAX PV SYSTEM VOLTAGE (PER NEC 690.7) <br />(-0.1766)x(-(25-(2))x5)+(64.9x5)= 344.8 V <br />MAX PV CONTINUOUS CURRENT PER NEC 690.8(A)(1): <br />1.25 x Isc x # STRINGS <br />1.25 x 6.46 x2= 16.2 A <br />ELECTRICAL CALCULATIONS MPPT 2 <br />OPERATION VOLTAGE= 5 X 54.7= 273.5 V <br />OPERATING CURRENT= 1 X 5.98= 6.0 A <br />MAX PV VOLTAGE & CURRENT CALC'S <br />RECORD LOW TEMP.(°C): 2 <br />TEMP.COEFF (V/°C): -0.1766 <br />OPEN CIRCUIT VOLTAGE(Voc): 64.9 <br />MAX PV SYSTEM VOLTAGE (PER NEC 690.7) <br />(-0.1766)x(-(25-(2)*5)+(64.9x5)= 344.8 V <br />MAX PV CONTINUOUS CURRENT PER NEC 690.8(A)(1): 2 <br />1.25 x Isc x # STRINGS o: 12 <br />1.25 x 6.46 x1= 8.1 A :35 <br />900 <br />Con:ODC CONDUCTOR AMPACITY CALC'S 0- LU Qi <br /># OF STRINGS PER INVERTER: 3 DRA.R QoME <br />EXPECTED WIRE TEMP. (°C): 53 28 Mil <br />TEMP CORRECTION PER TABLE 310.16: 0.76 Emasz <br /># OF CURRENT CARRYING CONDUCTORS: 6 H m t. >: < <br />z z < E LCIRCUIT FILL CORRECTION PER TABLE 310.15(B)(2)(a): 0.8 O D (0 4 C <br />OcootcCIRCUIT CONDUCTOR SIZE: AWG 10 THWN-2 <br />REQUIRED CIRCUIT CONDUCTOR AMPACITY <br />PER NEC 690.8 (A&B) (FROM PANELS TO INVERTER): <br />1.25 x 1.25 x Isc x # PER STRING <br />1.25 x 1.25 x 6.46 x 1 = 10.1 A W <br />0 <br />6 <br />DERATED AMPACITY OF CIRCUIT CONDUCTOR Z <br />PER NEC TABLE 310.16 -51 iRTEMP. CORR. PER NEC 310.16 x CONDUIT FILL CORR.00 g <br />PER NEC 310.15(B)(2)(a) x CIRCUIT CONDUCTOR AMPACITY * <br />PER NEC TABLE 310.16 5 N <br />0.76 x 0.8 x 40= 24.3A > 10.1 A O.K. · 0 <br />AC CONDUCTOR AMPACITY CALC'S <br /># OF INVERTER: 1 <br />EXPECTED WIRE TEMP. (°C): 31 <br />TEMP. CORR. PER NEC TABLE 310.16:0.96 <br />CIRCUIT CONDUCTOR SIZE: AWG 10 THWN-2 z 2 <br />LLI ,-- 81# OF CURRENT CARRYING CONDUCTORS: 3 lili 5 CO < I58"0CONDUIT FILL CORR. PER NEC 310.15(B)(2)(a): 1 115 W Ni <br />CIRCUIT CONDUCTOR AMPACITY: 40A 2 15 225 <br />W < U; <i <br />REQUIRED CIRCUIT CONDUCTOR AMPACITY g09(I <br />PER NEC TABLE 690.8(B):0.-)(9(01 <br />1.25 x MAX INVERTER OUTPUT CURRENT X # OF INVERTER <br />1.25 x 23 x 1 = 28.8A <br />Z <br />DERATED AMPACITY OF CIRCUIT CONDUCTOR Q <br />PER NEC TABLE 310.16 <LU <br />J (0 <br />TEMP. CORR. PER NEC 310.16 x CONDUIT FILL CORR.W85 <br />PER NEC 310.15(B)(2)(a) x CIRCUIT CONDUCTOR AMPACITY d 4 9# 0 0. <br />PER NEC TABLE 310.16 <br />0.96 xlx40 =38.4A >28.8A O.K. <br />30A PV BREAKER WILL BE PROVIDED <r CO <br />10 r- <br />BACKFED 120% RULE PER NEC 690 Ni <br />00120% x BUS RATING>=MAIN BREAKER + PV BREAKER Z Iii <br />120% x 125A>=100A+PV BREAKER 0 1- <br />O< <br />-0PV BREAKER <= 50A <br />30A<= 50A O.K. <br />PV 4 <br />/14-/34-4311 <br />Dr,CA, UK RZOZ I T: 714-676-8888