NM Non-metallic sheathed cable, braid or plastic covered. For dry use, 60°C.
NM-B Non-metallic sheathed cable, plastic covered. For dry use, 90°C.
NMC Non-metallic sheathed cable, plastic or neoprene covered. Wet or dry use, 60°C, and corrosive applications.
According to NEMA, "Types NMC and NMS are not commercially available, but type UF-B can be substituted for NMC. Type NMS is a construction consisting of NM-B and data/communications cables."
[This message has been edited by kale (edited 06-17-2005).]
