TonyThunder
Member
If I use a 100% rated over current protection device for a lighting circuit, then I know I can keep my conductors at the non-continuous and continuous load, intead of non-continuous and 125% of continuous load. But do I still need to derate the conductors for mutal heating, more than 3 conductors, and for ambient temperature, greater than 75 degrees F? I'm thinking that I must still do this but there is an article, I think 215(?), that seems to indicate that with a 100% rated OCPD, no derating of the condcutor is required.