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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.

Get reliable performance with Southwire 500 ft. 12/1 Solid THHN Building Wire 11591558, perfect for your residential and commercial electrical projects.
Southwire MPN 11591558
Sold Locally Only

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

Typical Store Price i
Typical store price: low $0.99, average $0.49
In-Store Exclusive

This one's worth the trip to the store.

Brands like Weber, Milwaukee, Yeti, and DeWalt restrict where their products can be sold online — and for good reason. In-store buyers get authentic products, full manufacturer warranty, and access to pricing that simply isn't allowed to be advertised on the web.

  • Authorized dealer network · Full manufacturer warranty & support
  • Guaranteed authentic · No counterfeits, no gray-market resellers
  • The brands set these standards · Be wary of sellers who don't follow them
Why isn't this online? The whole story →
Shop Local · Support Independent

Every order helps keep your local hardware store on the corner.

Why we built NHG
You might find it for less locally. Independent retailers often offer competitive pricing — some products are even cheaper in-store than online.
Real expert advice — not search results. Independent hardware staff know their inventory and the local conditions you're working in.
Keep the neighborhood working. Every dollar spent at an independent retailer returns roughly 3x more to your local economy than at a national chain.

About Product Overview

Enhance your electrical projects with the Southwire 500 ft. 12/1 Solid THHN Building Wire 11591558, a top-tier choice for both residential and commercial applications. This high-quality wire is designed to deliver superior performance and reliability, making it an essential addition to your toolkit.

Key features of the Southwire 500 ft. 12/1 Solid THHN Building Wire 11591558 include:

  • Amp Rating: 20 Amps for ample electrical capacity.
  • Conductor Gauge: 12, providing versatility for various installations.
  • Material: Made from durable Copper, ensuring excellent conductivity.
  • Insulation: Features a robust PVC jacket for added protection.
  • Flame Retardant: Yes, ensuring safety in hazardous environments.
  • Ground Material: Copper, promoting effective grounding capabilities.
  • Direct Burial: Not suitable, but perfect for indoor and conduit applications.

This Southwire 500 ft. 12/1 Solid THHN Building Wire 11591558 is flame-retardant, providing peace of mind in fire-prone areas, while the nylon jacket adds an extra layer of protection against wear and tear. Whether you are wiring a new home, upgrading your electrical system, or tackling DIY projects, this building wire offers the reliability and performance you need.

Don’t compromise on quality. Invest in the Southwire 500 ft. 12/1 Solid THHN Building Wire 11591558 today and experience the difference. Order now and power your projects with confidence!

The Details Specifications

Brand Southwire
SKU 33242
UPC 032886892776
Unit 0
Case Pack Quantity 2 per case
Retail Unit Quantity 500
Unit of Measure 500 SO
Dimensions (L × W × H) 7 × 7 × 5
Weight 12 lbs
Cubic Feet 0.14179 ft³
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

Ask our counter. Or theirs.

Most hardware stores can do more than you think. If we can't help you, the folks down the street probably can — just ask at the counter.

What we offer
Free Local Pickup Ship to your hometown store
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Ships Nationwide From our distribution network
Independent Network Real hardware stores
$0.68 of every dollar spent at a local independent business stays in the community. At a national chain, it's about fifteen cents. Civic Economics, multi-city retail studies
Their Counter
Try local first · we'll wait

The stores we send you to are local and independently run — often for generations, the kind of place where someone behind the counter knows the regulars. We don't own them. We just think they deserve the foot traffic. They can put most of what we sell on their next truck. Ask there before you check out here.

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About our directory. National Hardware Group is an independent retailer and directory. The local stores we list and link to are separately owned and operated — we have no ownership stake in any of them, and most pay us nothing to be included. That includes plenty of stores flying a co-op banner that people don't realize are locally owned and run, not operated by a corporation. Store owners can choose to upgrade their listing for an enhanced presence or pickup features, but the base directory is free, and inclusion is never a paid endorsement.

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