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Southwire 500 ft. 12/1 Solid THHN Building Wire

Southwire 500 ft. 12/1 Solid THHN Building Wire

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

UL-listed 600V copper wire rated for wet locations, giving you flexibility for indoor runs where moisture is a factor.
Southwire MPN 11588158
Sold Locally Only

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

In-Store Exclusive

This one's worth the trip to the store.

This Southwire item is one you'll find in stores rather than online — and that's often the better way to buy. In store you get the genuine article, full manufacturer warranty, and real advice from someone who's actually handled it — no counterfeits, no gray-market resellers.

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Why isn't this online? The whole story →

About Product Overview

This 500-foot spool of Southwire 12 AWG THHN is solid copper conductor rated for general branch circuit wiring at 20 amps. The PVC insulation with nylon jacket carries a 600-volt rating and stands up to wet locations, so it works for both dry indoor runs and damp environments where moisture resistance matters. White color makes it easy to identify as a neutral conductor when pulling multiple circuits.

  • 12 AWG solid copper conductor, THHN construction
  • 600V rated, 194°F temperature rating
  • UL Listed, flame retardant, rated for wet locations
  • 500 ft. spool, made in the USA

The Details Specifications

Brand Southwire
Model / MPN 11588158
UPC 032886892745
Weight 12 lbs
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
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