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Green THHN wire on spool, 4 AWG stranded copper, 500 ft

Southwire

Southwire 25172801 THHN Wire 4 AWG Green Stranded 500 ft

SKU CH-CHVE-Q0JJF

THHN building wire, 4 AWG green stranded copper, 500 ft spool rated 600 V with 19-strand construction and 0.32 in. diameter

  • Product typeWire & Cable
  • 600 V rating for safe power distribution
  • 4 AWG stranded copper with 19 strands for flexible routing
  • Green THHN insulation identifies grounding conductors
  • 500 ft spool supplies long continuous runs
  • .32 in diameter fits standard conduit sizing

4 AWG THHN Green Stranded Wire

Southwire 25172801 is a 4 AWG THHN building wire with a single stranded copper conductor, green PVC insulation and a 600 V rating. It comes on a 500 ft spool and is intended for conduit or raceway installations in residential, commercial or industrial projects.

Spool Packaging and Stranded Construction

The 500 ft spool keeps the 19-strand conductor tangle-free during long pulls and allows precise cut-to-length use on site. Green insulation identifies the conductor as an equipment ground, meeting colour-code requirements without additional marking.

Conduit Installation and Common Issues

Stranded 4 AWG bends more easily than solid wire, easing pulls through bends and reducing fatigue at terminations. Installers must use connectors rated for stranded conductors and strip the .32 in. outside diameter cleanly to avoid nicking strands, which can create hot spots under load.

How it compares

Measured against everything we stock in Wire, Cable & Wiring Supplies, at today’s prices. Recalculated every night.

Price $938.99
Pricier than about 93% of the 1,610 comparable items (median $25.99).

Specifications

Product
Brand nameSOUTHWIRE
Product typeWire & Cable

Questions about this item

Will the 19-strand copper conductor need any maintenance or replacement over time?

The stranded copper conductor is maintenance-free for the life of the installation; it requires no replacement unless physically damaged or the 600 V PVC insulation is compromised.

What limit shows up first when the 4 AWG wire runs at full load in conduit all day?

The 600 V insulation rating and the resulting ampacity ceiling for the installation method become the limiting factor before the copper itself overheats.

How much heat or voltage drop should I expect on a 500 ft run of this green THHN at continuous current?

Voltage drop depends on the actual load current and circuit length; the 0.32 in outside diameter and 19-strand construction keep resistance low, but the 600 V rating does not eliminate drop over 500 ft.

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