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BACKUP LOADS <br />LOAD BREAKER RATING <br />(AMPS)LABEL DEMAND <br />LOAD <br />1 15A-1P FAU 1440 W <br />2 15A-1P LIGHTING/RECEPTACLE 1500 W <br />3 20A-1P FREEZER 1500 W <br />4 20A-1P GARAGE 1500 W <br />5 20A-1P GDO 1500 W <br />6 20A-1P MICRO 1500 W <br />7 20A-1P KITCHEN 1500 W <br />8 20A-1P LAUNDRY 1500 W <br />9 20A-1P LAUNDRY 1500 W <br />10 20A-1P BATH 1500 W <br />11 20A-1P OPEN 1500 W <br />12 20A-1P SPA,TUB 1500 W <br />13 20A-1P HOOD 1500 W <br />14 20A-1P WASHING 1500 W <br />15 20A-1P KITCHEN 1500 W <br />16 20A-1P KIT 1500 W <br />17 20A-1P VAC 1500 W <br />18 20A-1P BATH GFI 1500 W <br />19 20A-1P LIGHTING/RECEPTACLE 1500 W <br />20 40A-2P OVEN 7680 W <br />21 40A-2P AC 7680 W <br />22 50A-2P AC 9600 W <br />23 70A-2P SUB PANEL 13440 W <br />ALL BACKED UP LOADS ABOVE IN THE BACKED UP LOADS PANEL ARE RELOCATED <br />FROM THE MAIN <br />SERVICE PANEL. <br />BACKED UP LOADS CALCULATION: <br />13440 VA/ 240V = 56 A PER CEC 2025 ARTICLE 690.10 OR NEC 2023 ARTICLE 710.15. <br />THE MAXIMUM CURRENT FOR ALL LARGE APPLIANCES LOADS IS 56 A. <br />(MAX LOADS OUTPUT) X (CONTINUOUS LOADS) = <br />56A X 1.25 = 70 A; <br />BACKED UP LOADS PANEL BREAKER = 125 A <br />70 A < 125 A. <br />THEREFORE, THE AMPERAGE OF THE BACKED UP LOADS IS LESS THAN THAT OF <br />THE OCPD. <br />AC WIRE SIZING FOR BACKED UP LOADS PANEL: <br />MAX AC OUTPUT CURRENT = (MAX BACKUP LOADS OUTPUT) X (CONTINUOUS <br />LOAD)[210.19(A)(1)] = <br />56A X 1.25 = 70 A; <br />ADJUSTED CONDUCTOR AMPACITY = (HIGH TEMP)[TABLE 310.15(B)(1)] X (CONDUIT <br />FILL)[TABLE <br />310.15(C)(1)] X (CONDUCTOR AMPACITY)[TABLE 310.16] = <br />0.96 X 0.45 X 95A = 41.04A <br />TERMINAL RATING[110.14(C)] = <br />4 AWG, , 75°C RATED = 85A <br />41.04A < 85A > TERMINAL RATING GOVERNS CONDUCTOR SIZING. <br />70 A =< 85A -> 4 AWG AMPACITY OK <br />THEREFORE 4 AWG IS SUFFICIENT. <br />PAGE <br />REV: B 2/18/2026 <br />SUSAN GARCIA <br />3430 S SHEFFIELD RD, SANTA <br />ANA, CA, 92704 <br />PROJECT NUMBER: <br /> 109R-430GARC2 PR-3004702971 <br />SHEET <br />DESIGNER: <br />ASHIK <br />CUSTOMER RESIDENCE: <br />TEL. (714) 421-8080 <br />APN: 412-531-77 <br />(415) 580-6920 ex3 <br />PV-4.3 <br />#ESTAMP#SSTAMP <br />2500 WHITE RD. SUITE A, IRVINE CA 92614 <br />PHONE 805.540.7603 <br />FAX 949.215.7778 <br />CA CL #750184 <br />GILBERT CORREIA, C10, C46 <br />BACKUP LOAD CALCS