Laserfiche WebLink
ELECTRICAL CALCULATIONS. <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 />MAXPV 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 />1.25xlscx#STRINGS <br />1.25 x 6.46 x2= 16.2 A <br />AC CONDUCTOR AMPACITY CALC'S <br /># OF INVERTER: 1 <br />EXPECTED WIRE TEMP. (°C): 31 <br />TEMP. CORR. PER NECTABLE 310.16: 0.96 <br />CIRCUIT CONDUCTOR SIZE: AWG 10 THWN-2 <br /># OF CURRENT CARRYING CONDUCTORS: 3 <br />CONDUIT FILL CORR. PER NEC 310.15(B)(2)(a): 1 <br />CIRCUIT CONDUCTOR AMPACITY: 40A <br />REQUIRED CIRCUIT CONDUCTOR AMPACITY <br />PER NEC TABLE 690.8(B): <br />1.25 x MAX INVERTER OUTPUT CURRENT X # OF INVERTER <br />1.25 x 14.5 x1= 18.lA <br />SERVICE PANEL LOAD CALCULATION <br />REFERENCE NEC 220.83(A) <br />MAIN HOUSE <br />AREA 1419 SF <br />GENERAL LIGHTING 3 = 4.3 kVA <br />SMALL APPLIANCE 2 = 3.0 kVA <br />LAUNDRY 1 = 3.3 kVA <br />RANGE 8 kVA <br />DRYER LOAD 3.5 kVA <br />GARBAGE DISP.1.5 kVA <br />DISHWASHER 1.5 kVA <br />MICROWAVE 1.5 kVA <br />REFRIGERATOR 1 kVA <br />AC 4 kVA #970591 (B, C46 <br />DC CONDUCTOR AMPACITY CALC'S <br /># OF STRINGS PER INVERTER: 2 <br />EXPECTED WIRE TEMP. (°C): 53 <br />TEMP CORRECTION PER TABLE 310.16: 0.76 <br /># OF CURRENT CARRYING CONDUCTORS: 4 <br />CIRCUIT FILL CORRECTION PER TABLE 310.15(B)(2)(a): 0.8 <br />CIRCUIT 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 x1= 10.1 A <br />DERATED AMPACITY OF CIRCUIT CONDUCTOR <br />PER NEC TABLE 310.16 <br />TEMP. CORR. PER NEC 310.16 x CONDUIT FILL CORR. <br />PER NEC 310.15(B)(2)(a) x CIRCUIT CONDUCTOR AMPACITY <br />PER N'EC TABLE 310.1'6 <br />0.76 x 0.8 x 40 = 24.3A > 10.lA O.K. <br />DERATED AMPACITY OF CIRCUIT CONDUCTOR <br />PER NEC TABLE 310.16 <br />TEMP. CORR. PER NEC 310.16 x CONDUIT FILL CORR. <br />PER NEC 310.15(B)(2)(a) x CIRCUIT CONDUCTOR AMPACITY <br />PER NEC TABLE 310.16 <br />0.96 xlx40 =38.4A > 18.lA O.K. <br />20A PV BREAKER WILL BE PROVIDED <br />BACKFED 100% RULE PER NEC 690 <br />100% x BUS RATING>=MAIN BREAKER + PV BREAKER <br />100% x 200A>=175A+PV BREAKER <br />PV BREAKER <= 25A <br />20A<= 25A O.K. <br />MOTOR (AC) 25%1 kVA <br />Z-·NET LOAD (kVA)32.6 kVA *8r <br />100% 8 8.0 kVA Of. \ / <br />< -J C <br />00 <br />40% 32.6 9.84 WA <br />CALCULATED LOAD (kVA)17.8 kVA <br />TOTAL NEW LOAD ON 200A SERVICE <br />TOTAL LOAD (A)68.3 A <br />SOLAR PV SYSTEM BREAKER (A)20.0 A <br />Ili .. F- <br />TOTAL BUS BAR (A)88.3 A <D 1 <br />ZHU: 1 <br />MAIN OCPD =175 A > 88.3 A 1-OC 1 <br />O/00: , <br />ILIZU <br />10< 1OIL k <br />*48 1 <br />Z <br />0 <br />1- <br />lii O <br />11- 0 <br />% 53 <br />% P <br />NB <br />6: <br />Z 12 <br />20 <br />PV 4 <br />(, <br />SANTA ANA, CA 92707 <br />451W. LAMBERT RD.,