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...
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...
Does anyone know a good on-line tutorial for sizing motor circuits?
I'm looking for the usual stuff, hopefully with relevant tables included:
2. Wire size of branch
3. Branch OCPD rating
4. Motor Overload protector rating or setting
5. Wire size of feeder if multiple branches