Romex Extra Color NM-B is a line of nonmetallic cable color-coded by gauge size. No. 14 is white, No. 12 is yellow, No. 10 is orange and No. 6 is black. The colors simplify inventory management for ...

Nonmetallic (NM) cable, sometimes called Romex, has two or three insulated ... it can carry without overheating. A 14-gauge wire can carry up to 15 amps; a 12-gauge wire, up to 20 amps; and ...