Skip to content
Free Local Pickup ● Ship to Your Hometown Store
Pro & Contractor Accounts ● Apply for Net Terms
100,000+ Products ● Trusted American Hardware Brands
FAQ Shipping & Returns Order Lookup Contact Account
Southwire 500 ft. 18/1 Solid Copper Low Energy Cable

Southwire 500 ft. 18/1 Solid Copper Low Energy Cable

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

Discover consistent, low-voltage reliability with the Southwire 500 ft. 18/1 Solid Copper Low Energy Cable. Built for long runs and demanding environments, this 18 AWG single-condu…

Southwire MPN 49293401
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 $0.59
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

Discover consistent, low-voltage reliability with the Southwire 500 ft. 18/1 Solid Copper Low Energy Cable. Built for long runs and demanding environments, this 18 AWG single-conductor cable combines solid copper efficiency with rugged construction to tackle indoor and outdoor projects alike.

  • Solid copper conductor delivers minimal resistance and dependable performance for low-energy circuits.
  • 500 ft spool provides ample length for extended installations without frequent re-supply.
  • Direct burial & wet location rated enables trench installations and exterior use without compromising safety.
  • Flame retardant design adds an extra layer of safety in everyday applications.
  • Insulation & jacket composed of PVC thermoplastic insulation with a durable nylon jacket for abrasion resistance and long-term durability.
  • Temperature rating 140 and Voltage rating 150 ensure suitability for controlled, low-voltage systems.
  • UL Listed for trusted quality and compliance with industry standards.
  • Color Black and UV resistant—built to withstand sunlight exposure on outdoor runs.
  • Indoor or outdoor use—designed to perform across diverse environments and applications.

Ideal applications and use cases

Designed for low-energy, low-current installations, this cable is perfect for residential and commercial projects where reliability matters. Consider it for:

  • Thermostat wiring and other low-voltage control circuits
  • Doorbells, security sensors, and alarm system wiring
  • Irrigation controllers, landscape lighting controllers, and irrigation sensors
  • Low-energy automation projects and small-scale instrumentation

Why this Southwire low energy cable stands out

Unlike general-purpose wire, this cable is purpose-built for low-energy applications with a durable nylon jacket and PVC insulation that resist abrasion, moisture, and sunlight. The solid copper conductor minimizes resistance and signal loss over longer runs, while the direct burial capability expands your installation options without compromising safety or performance. UL listing and a robust 150V rating provide confidence for controlled, non-mains electrical work.

Technical specifications at a glance

  • Amp rating: 6
  • Cable type: Low Energy Cable
  • Conductor material: Copper
  • Conductor gauge: 18
  • Number of conductors: 1
  • Direct burial: Yes
  • Insulation material: PVC Thermoplastic
  • Jacket material: Nylon
  • Temperature rating: 140
  • UL listed: Yes
  • Voltage rating: 150
  • Wet location use: Yes
  • Wire length: 500 ft
  • Color: Black
  • Indoor/Outdoor: Indoor and Outdoor
  • Sunlight/UV resistance: Yes

For projects that demand dependable low-voltage performance with long runs, the Southwire 500 ft. 18/1 Solid Copper Low Energy Cable delivers on durability, safety, and reliability—making it a trusted choice for installers and DIY enthusiasts tackling thermostat wiring, sensors, and outdoor control systems.

The Details Specifications

Brand Southwire
SKU 3016680
UPC 032886003424
Unit 0
Case Pack Quantity 4 per case
Retail Unit Quantity 500
Unit of Measure 500 RL
Dimensions (L × W × H) 7 × 7 × 5
Weight 7 lbs
Cubic Feet 0.13277 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.

Find a local store →
Mon–Fri 6–5 PST
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.

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare