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  1. General Electrical Discussion
    Q1: I have been under the impression that I could not use a 50A breaker with a #8 wire. (Romex, NMB) I usually run 8/3 Romex for ranges and use a 40A breaker. - However, can I use a 50A breaker. - I am thinking no because the range would be considered a continuous load. (Does the NEC state...
  2. NEC Code Forum
    I am using 90C rated wire (THWN-2) and I have source and destination enclosures with terminals rated for only 75C. There are 4 current-carrying wires in my conduit between enclosures. Per NEC Table 310.15 (B)(3)(a), this gives a "number of wires derate" of 0.8. My system is indoors, so there...
  3. General Electrical Discussion
    Does anyone know a good on-line tutorial for sizing motor circuits? I'm looking for the usual stuff, hopefully with relevant tables included: 1. FLC 2. Wire size of branch 3. Branch OCPD rating 4. Motor Overload protector rating or setting 5. Wire size of feeder if multiple branches 6. Feeder...
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