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Template_version_v5_2025.04.08 <br />PAGE <br />REV: A 4/13/2025 <br />JOSE GUERRERO <br />901 WESTWOOD AVE SANTA <br />ANA CA 92703 <br />PROJECT NUMBER: <br /> 109R-901GUER2 <br />SHEET <br />DESIGNER: <br />JOHNPAUL JOSHY <br />CUSTOMER RESIDENCE: <br />TEL. (657) 731-4773 <br />APN: 405-231-22 <br />(415) 580-6920 ex3 <br />Template_version_v5_2025.04.08 <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 LOADS <br />LOAD BREAKER <br />RATING (AMPS)LABEL DEMAND <br />LOAD <br />1 15A-1P LIGHTING AND RECEPLTACLE 1500 W <br />2 15A-1P LIGHTING AND RECEPLTACLE 1500 W <br />3 15A-1P LIGHTING AND RECEPLTACLE 1500 W <br />4 20A-1P LIGHTING AND RECEPLTACLE 1500 W <br />5 20A-1P LIGHTING AND RECEPLTACLE 1500 W <br />6 20A-1P LIGHTING AND RECEPLTACLE 1500 W <br />7 20A-1P LIGHTING AND RECEPLTACLE 1500 W <br />8 25A-2P OTHER 4800 W <br />9 20A-2P TRM 3840 W <br />10 40A-2P OTHER 7680 W <br />#ESTAMP <br />PV-4.3 <br />BACKUP LOAD CALCS <br />BACKUP LOAD CALCS <br />ALL BACKED UP LOADS ABOVE IN THE BACKED UP LOADS PANEL ARE RELOCATED FROM THE MAIN SERVICE <br />PANEL. <br />BACKED UP LOADS CALCULATION: <br />(7680 VA)/ 240V = 32 A PER CEC 2022 ARTICLE 690.10 OR NEC 2020 ARTICLE 710.15. <br />THE MAXIMUM CURRENT FOR ALL LARGE APPLIANCES LOADS IS 32A. <br />(MAX LOADS OUTPUT) X (CONTINUOUS LOADS) = <br />32 A X 1.25 = 40A; <br />BACKED UP LOADS PANEL BREAKER = 200A <br />40 A < 200A <br />THEREFORE, THE AMPERAGE OF THE BACKED UP LOADS IS LESS THAN THAT OF THE OCPD. <br />AC WIRE SIZING FOR BACKED UP LOADS PANEL: <br />MAX AC OUTPUT CURRENT = (MAX LOADS OUTPUT) X (CONTINUOUS LOAD)[210.19(A)(1)] = <br />32 A X 1.25 = 40A <br />ADJUSTED CONDUCTOR AMPACITY = (HIGH TEMP)[TABLE 310.15(B)(1)] X (CONDUIT FILL)[TABLE 310.15(C)(1)] X <br />(CONDUCTOR AMPACITY)[TABLE 310.16] = <br />0.91 X 0.5 X 55A = 25.025A <br />TERMINAL RATING[110.14(C)] = <br />8 AWG, 75°C RATED = 50A <br />25.025A < 50A → TERMINAL RATING GOVERNS CONDUCTOR SIZING. <br />50A ≤ 50A → 8 AWG AMPACITY OK <br />THEREFORE 8 AWG IS SUFFICIENT. <br /> <br />