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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.

Discover reliability with Southwire 500 ft. 12/1 Solid THHN Building Wire 11588158, designed for superior performance in all your electrical projects.
Southwire MPN 11588158
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

Introducing the Southwire 500 ft. 12/1 Solid THHN Building Wire 11588158, your dependable solution for all electrical wiring needs. Crafted with high-quality copper, this wire is engineered to deliver exceptional performance in a variety of applications, ensuring your projects run smoothly and efficiently.

  • Amp Rating: 20 Amps for optimal power distribution
  • Conductor Gauge: 12 AWG, providing excellent conductivity
  • Conductor Material: Premium copper for enhanced durability and reliability
  • Flame Retardant: Yes, ensuring safety in high-temperature environments
  • Insulation Material: PVC, offering excellent protection against moisture and chemicals
  • Jacket Material: Nylon, enhancing resistance to wear and tear

Designed for indoor use, the Southwire 500 ft. 12/1 Solid THHN Building Wire 11588158 is not suitable for direct burial, making it ideal for building and construction projects where reliable wiring is essential. With a single conductor, it simplifies installation and is perfect for various electrical applications.

Don't compromise on quality when it comes to your wiring needs. Choose the Southwire 500 ft. 12/1 Solid THHN Building Wire 11588158 and experience unmatched performance and safety. Order now and ensure your projects are powered by the best!

The Details Specifications

Brand Southwire
SKU 30246
UPC 032886892745
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
Pro & Gov Accounts Net terms · tax-exempt
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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Independent hardware retailer? Join the network →
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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