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Romex® is a brand name for non-metallic (NM) sheathed electrical cable commonly used in residential wiring projects. It consists of two or more insulated conductors and a bare ground wire, all encased in a durable plastic sheath.
We will explain in detail how to interpret specifications and dimensions, understand Romex house wire color coding, and choose the cable that best suits your needs.
Your Romex Wire Buying Handbook: What is it & How to Choose
NM-B cable, known under one of its brand names, Romex, is a non-metallic sheathed cable used for indoor residential and light commercial wiring. The cable comprises an outer sheath of PVC plastic, 2 or 3 insulated conductors (black, white, red), and one bare copper ground wire.
You can buy lots of stuff at Costco, a wholesale club retailer that sells household products and more, and it appears they’ve added residential building wire to the list. A reader – thank you Dan!! – shared these photos with us, showing good pricing on 500-foot spools of Romex-style 12-gauge wiring.
ROMEX Wire: ROMEX is a trade name for electrical conductor wiring that’s commonly used as residential branch wiring. It’s often used for lighting and outlet circuits.
Romex refers to a brand of non-metallic (NM) sheathed wire, produced by Southwire, an American company renowned for their reliable electrical wiring products.
What Is Romex Wiring? Romex is the brand name of a nonmetallic (NM) sheathed electrical cable manufactured by Southwire. The “nonmetallic” designation refers to the protective sheath that covers the electrical conductors (wires).