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White THHN 12 AWG solid wire on spool, 50 ft length

SOUTHWIRE COMPANY

SOUTHWIRE COMPANY 11588183 THHN 12 AWG White 50 ft Conduit

SKU CH-FJC6-6348P

Single-conductor solid wire with PVC insulation and nylon jacket rated 600 V, 12 AWG, 50 ft spool

  • Color and finishWhite
  • Product typeWire & Cable Staples
  • Overall length3.5
  • THHN rated for 600V AC circuits
  • 12 AWG solid conductor handles standard branch wiring
  • White nylon jacket resists oil and moisture
  • 50 ft spool covers typical residential runs
  • 12 in outside diameter fits common conduit sizes

Electrical Wire for Residential Wiring

This solid 12 AWG THHN conductor is rated for 600 V AC and comes in a 50 ft spool. The white nylon jacket over PVC insulation identifies the neutral path in standard AC circuits. It suits electricians and DIYers running branch circuits in conduit or cable tray. The single-strand design keeps the profile slim for tight pulls.

Cool Running in Typical Service

At normal branch-circuit currents the PVC insulation and thin nylon jacket dissipate heat without noticeable temperature rise. The solid copper core presents low resistance so voltage drop stays minimal across the 50 ft length. No forced cooling is required when installed in free air or code-compliant conduit fill. The 0.12 in outside diameter fits standard knockout sizes cleanly.

Behaviour Under Continuous Load

When loaded near its ampacity the conductor warms evenly along the spool length without hot spots. The nylon jacket resists abrasion during long pulls through multiple bends. Insulation integrity holds at the full 600 V rating throughout sustained operation. The solid construction eliminates strand fatigue that can occur with repeated thermal cycling.

How it compares

Measured against everything we stock in Electrical Conduit & Fittings, at today’s prices. Recalculated every night.

Price $19.99
Cheaper than about 59% of the 1,290 comparable items (median $28.99).

Specifications

Product
Brand nameSouthwire
Color and finishWhite
Product typeWire & Cable Staples

Questions about this item

How is the 12 AWG solid THHN wire pulled through conduit, and what step is often missed?

Feed the solid conductor from the spool using a fish tape, keeping the nylon jacket straight; the step often missed is deburring the conduit ends so the 0.12 in jacket does not tear.

What maintenance or replacement will the white THHN wire need after installation?

The PVC insulation and nylon jacket are rated for the life of the circuit; replace only if the white jacket shows cuts, heat discoloration, or the conductor is nicked during later work.

What limit appears first when the 12 AWG wire runs near its 600 V rating in a packed conduit?

Conduit fill and ambient temperature drive the ampacity ceiling; the 0.12 in outside diameter means heat builds quickly, so the thermal limit is reached before the voltage rating.

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