10179304_1408 W. 2ND - Plan (2) - Laserfiche WebLink

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REQUIRED SIGNAGE 1. LABEL FOR JUNCTION BOX: 690.35(F) WARNING! ELECTRIC SHOCK HAZARD IF A GROUND FAULT IS INDICATED, NORMALLY GROUNDED CONDUCTORS MAY BE UNGROUNDED AND ENERGIZED 2. LABEL FOR SOLAR AC DISCONNECT: 690.53 OPERATING CURRENT: 12.6 A OPERATING VOLTAGE: 240 VAC MAXIMUM OUTPUT POWER: 3.0 kW 7. ON ALL INVERTER AND EXTERIOR PV CONDUIT, RACEWAYS, ENCLOSURES, CABLE ASSEMBLIES AND JUNCTION BOXES PROVIDE A SIGN WITH THE FOLLOWING WORDING: CAUTION SOLAR CIRCUIT MARKING SHALL BE PLACED EVERY 10 FEET AT TURNS AND ABOVE AND/ OR BELOW PENETRATIONS AND AT ALL PV COMBINER AND JUNCTION BOXES. AC CONDUCTOR AMPACITY CALC'S (FROM AC DISCONNECT TO MAIN SERVICE PANEL) # OF INVERTER: 14 EXPECTED WIRE TEMP. (°C): 31 TEMP. CORR. PER NEC TABLE 310.16: 0.96 CIRCUIT CONDUCTOR SIZE: AWG 10 THWN-2 # OF CURRENT CARRYING CONDUCTORS: 3 CONDUIT FILL CORR. PER NEC 310.15(B)(2)(a): 1 CIRCUIT CONDUCTOR AMPACITY: 40A REQUIRED CIRCUIT CONDUCTOR AMPACITY PER NEC TABLE 690.8(B): 1.25 x MAX INVERTER OUTPUT CURRENT X # OF INVERTER 1.25 x 0.9 x14 =15.8A DERATED AMPACITY OF CIRCUIT CONDUCTORS PER 3. PROVIDE A PLACARD WITH THE FOLLOWING WORDING IN 1/4" HIGH LETTERING LABEL FOR SOLAR AC DISCONNECT: 690.17(4) WARNING! ELECTRICAL SHOCK HAZARD DO NOT TOUCH TERMINALS. TERMINALS ON BOTH THE LINE AND LOAD SIDES MAY BE ENERGIZED IN THE OPEN POSITION 4. LABEL FOR SOLAR AC DISCONNECT: 690.14(C)(2) SOLAR AC DISCONNECT 5. LABEL FOR INSIDE MAIN SERVICE PANEL: 690.64(B)(7) WARNING! INVERTER OUTPUT CONNECTION DO NOT RELOCATE THIS OVERCURRENT DEVICE FIRE DEPARTMENT REQUIRED SIGNAGE ELECTRICAL CALCULATIONS OPERATION VOLTAGE= 240 V OPERATING CURRENT= 14 X 0.9= 12.6 A MAX PV VOLTAGE & CURRENT CALC'S MAXIMUM AC OUTPUT POWER: 4 215 x 14 = 3.0 kW MAXIMUM PV SYSTEM DC VOLTAGE PER NEC 690.7 37.14 x 1.12 = 41.6 V MAXIMUM PV CONTINUOUS DC CURRENT PER NEC 690.8(A)(1) 1.25 x 8.45 xl= 10.6A AC CONDUCTOR AMPACITY CALC'S (FROM STRING TO AC DISCONNECT) # OF INVERTER: 14 EXPECTED WIRE TEMP. (°C): 53 TEMP. CORR. PER NEC TABLE 310.16: 0.76 CIRCUIT CONDUCTOR SIZE: AWG 10 THWN-2 .. # OF CURRENT CARRYING CONDUCTORS: 3 CONDUIT FILL CORR. PER NEC 310.15(B)(2)(a): 1.0 CIRCUIT CONDUCTOR AMPACITY: 40A NEC TABLE 310.16: TEMP. CORR. PER NEC TABLE 310.16 x - CONDUIT FILL CORR. PER NEC 310.15(B)(2)(a) x CIRCUIT CONDUCTOR AMPACITY PER NEC TABLE 310.16 0.96-x 1 x 40 = 38.4A > 15.8A O.K. 20A PV BREAKER WILL BE PROVIDED BACKFED 120% RULE PER NEC 690 120% x BUS RATING>=MAIN BREAKER + PV BREAKER 120% x 100A>=100A+PV BREAKER ' PV BREAKER <= 20A 20A<= 20A O.K. % 1 g DRAWN BY: 6. THE FOLLOWING SIGNAGE MUST HAVE A MINIMUM OF 3/8" HIGH LETTERING, IN ARIAL FONT(NON-BOLD), WITH CAPITAL LETTERS, WHITE ON RED BACKGROUND AND ON A REFLECTIVE, WEATHER RESISTANT MATERIAL. AT THE MAIN SERVICE DISCONNECT PROVIDE A SIGN WITH THE FOLLOWING WORDING: - CAUTION SOLAR ELECTRIC SYSTEM CONNECTED THE SIGN SHOULD BE PLACED ON THE OUTSIDE COVER IF THE MAIN SERVICE DISCONNECT IS OPERABLE WITH THE SERVICE PANEL CLOSED REQUIRED CIRCUIT CONDUCTOR AMPACITY 90 @*<ts o t=ei2PER NEC TABLE 690.8(B):i @ 4% 16 6 1.25 x MAX INVERTER OUTPUT CURRENT X # OF INVERTER 1.25 x 0.9 x 14 =15.8A TITLE: DERATED AMPACITY OF CIRCUIT CONDUCTORS CALCULATI0N SIGNAGEPER NEC TABLE 310.16: TEMP. CORR. PER NEC TABLE 310.16 x --- CONDUIT FILL CORR. PER NEC 310.15(B)(2)(a) x JOB NO: 20492XCIRCUIT CONDUCTOR AMPACITY PER NEC TABLE 310.16 0.76 x 1.0 x 40 = 30.4A > 15.8A O.K.DATE: 07/03/13 10 AWG WIRE IS O.K. PV 4