nerspellsner
Member
I have heard too many different answers for this question. I thought I might ask it again and get a 100% correct answer from you. What type and temperature ratings are the conductors in NM and MC? I thought that NM (romex) had type TW conductors inside the cable, but TW is only rated for 60C. If the conductor type includes a W does that mean they are all rated for wet locations? If romex is TW or THW or THHW then why cant it be used in a underground conduit?