12/3 NM-B

IUSA Wire 12/3 NM-B Cable with Ground is a heavy-duty, residential-grade building cable designed for indoor wiring when you need an extra conductor and the strength of 12 AWG. Built with three insulated copper conductors (black, red, and white) plus a bare copper ground, it’s ideal for applications like 3-way/4-way switching, split receptacles, and other multi-conductor branch circuits where 12 gauge is required.

Engineered for smooth pulls and clean terminations, IUSA Wire NM-B helps deliver a professional install on new builds, remodels, and circuit upgrades.

Common uses

• 3-way / 4-way switch wiring (stairways, hallways, large rooms)
• Ceiling fans (separate fan/light control)
• Split receptacles and multi-wire runs (where appropriate)
• Higher-load indoor residential circuits needing a third conductor

Key features

• 12/3 configuration: black + red + white insulated conductors + bare ground
• Copper conductors
• For dry, indoor applications (per NM-B use guidelines)
• Built for electricians, contractors, and serious DIYers