BASIC NEC CODE RULES AND DESIGN PRACTICE

#4 wire has 85 amps Use #4 2 #4 and, 1 #4 ground Circuit Breaker Sizing. CB = Load = 65.2 Amp = 81.5 Amp.8 .8. Next higher CB size is 90 Amp. NEC 240-6 and 240-3 exception 1, conduit-size, 3 #4 in conduit Table 3A = 1" conduit which allows 3 #4 maximum in a 1" conduit. Example: ................
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