Electrician Talk banner
derates
1-1 of 1 Results
  1. 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...
1-1 of 1 Results
Top