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Southwire 250 ft. 12/3 Solid Romex Type NM-B WG Non-Metallic Wire
Southwire 250 ft. 12/3 Solid Romex Type NM-B WG Non-Metallic Wire
Southwire 250 ft. 12/3 Solid Romex Type NM-B WG Non-Metallic Wire

Southwire 250 ft. 12/3 Solid Romex Type NM-B WG Non-Metallic Wire

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

A full 250' coil of 12/3 solid copper Romex for switched legs, three-way runs, and dedicated 20-amp circuits.
Southwire MPN 63947855
Sold Locally Only

This product isn’t sold on our website — see your local hardware store.

Typical Store Price i
Typical store price: low $271.99, average $319.99
In-Store Exclusive

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About Product Overview

This is Southwire's 250-foot coil of 12/3 Romex Type NM-B, the wire you reach for when a circuit needs a switched leg or a three-way run alongside the standard hot, neutral, and ground. The 12-gauge solid copper conductors carry a 20-amp rating, which covers general-purpose branch circuits, kitchen small appliance runs, and dedicated circuits for larger fixtures or motors that need the extra conductor.

Built for indoor residential and light commercial wiring, it's rated for dry locations only - not for direct burial or wet environments. The nylon jacket resists abrasion during pulls through studs and joists, while the thermoplastic insulation on each conductor carries a 90°C rating, giving you headroom for derating calculations. It's UL Listed and flame retardant, and manufactured in the USA. A 250' coil is enough for wiring several rooms or a full remodel section without running short mid-job, and the box packaging keeps the wire from tangling as you feed it out.

  • Gauge/Conductors: 12/3 with ground
  • Conductor Material: Solid copper
  • Amp Rating: 20 amps, 600V rating
  • Temperature Rating: 90°C
  • Jacket: Nylon, flame retardant
  • UL Listed, indoor dry-location use, 250' length

The Details Specifications

Brand Southwire
UPC 032886188978
Case Pack Quantity 1 per case
Retail Unit Quantity 1
Dimensions (L × W × H) 4 × 14 × 14
Weight 27 lbs
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
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