ECN Forum Forums General Topics of the Trade General Discussion Area anybody use romex going to ACs?

Are the wires in NM made to be used as seperate conductors?? or are they made to be part of a cable assy.?? On a roll of THHN there are markings telling size, listing, temps etc, are those on the individual wires in NM??.I've never seen them. I don't see the problem in practical terms but as far as code goes I say no but I doubt I would have ever seen it to say no