Wire & Cable

70+ products

Expected delivery: Wed, Nov 18

Wire and cable for building maintenance, equipment hookups and vehicle work. The range includes THHN/THWN single conductor building wire, automotive primary wire for trailers and upfits, SO and SJOOW portable cord, multi-conductor control cable and bare ground wire. Sizes are listed by AWG, and most types come in several insulation colors so conductors can be identified by color.

What to check before you order

  • Gauge (AWG). A smaller number means a larger conductor. The gauge a circuit needs depends on the load, the length of the run and code, so confirm it with a qualified electrician.
  • Insulation and jacket. Building wire is made to run in a raceway or as code allows. Portable cord has a flexible jacket for cords and movable equipment. Check oil, water and sunlight resistance for the location.
  • Stranded or solid. Stranded wire flexes more easily and handles vibration. Solid wire is common in fixed building circuits.
  • Voltage and temperature rating. Both are printed on the jacket. Match or exceed what the job specifies.
  • Put-up. Wire comes on spools, reels and in cut lengths. For full reels or unusual constructions, send a quote request.

Installation should be done by a qualified person to the National Electrical Code and local code. For terminations see connectors and terminals, to bundle and protect runs see cable ties and wire management, or go back to all electrical supplies.

Common questions

What does THHN/THWN mean on wire?

THHN is thermoplastic, high heat resistant insulation with a nylon jacket. THWN adds a wet location rating. Most building wire is dual rated, printed on the insulation.

What is the difference between SO and SJOOW cord?

SO is 600 V hard-service cord with an oil-resistant jacket. SJOOW is 300 V junior hard-service cord with oil-resistant insulation and jacket, rated for outdoor and wet use.

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