noun General Slang

Romex

· noun · construction

The plastic-jacketed house wiring inside basically every American home built since the 60s.

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Definitions

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Brand name (Southwire) for Type NM — non-metallic sheathed cable — that's become the generic word for it, like Kleenex or Hoover. Flat plastic jacket, usually white (14-gauge) or yellow (12-gauge) or orange (10-gauge), with two or three insulated conductors plus a bare ground inside. The default residential wiring in the US and Canada.

“Pull a run of 12-2 Romex from the panel to the kitchen island.”
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Romex In A Sentence

Pull a run of 12-2 Romex from the panel to the kitchen island.

Origin & Usage

Coined 1922 by Rome Wire Company of Rome, NY — 'Rome' + 'Ex' for the experimental product line. Trademark now owned by Southwire.

Variants RomexNM cableNM-B
Tags #construction#electrical#wiring#trades

People Also Ask

What is Romex?

Romex is the plastic-jacketed house wiring found in basically every American home built since the 1960s.

How do you use Romex in a sentence?

"Run some Romex from the panel to the new outlet in the bedroom."

Is Romex a brand name?

Yes — Romex is a trademarked brand of non-metallic sheathed cable, but the name is used generically for that plastic-jacketed wiring.

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