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THHN/THWN-2 copper building wire: line drawing of the cross-section. One drawing covers every size; the dimensions are in the table below.

THHN/THWN-2 copper building wire

Single-conductor copper building wire, 600V, stranded above 10 AWG.

ConductorCopper
Rating600V, 90°C dry/wet
PackagingSpools and reels
Typical lotReels totaling 2,000+ ft of feeder sizes

Also called: THHN, building wire, copper wire, feeder cable.

SizeGaugeUnitTarget price
14 AWG (1,000 ft)14 AWG1000 ft$160/1000 ft
12 AWG (1,000 ft)12 AWG1000 ft$248/1000 ft
10 AWG (1,000 ft)10 AWG1000 ft$384/1000 ft
8 AWG (1,000 ft)8 AWG1000 ft$624/1000 ft
6 AWG (1,000 ft)6 AWG1000 ft$960/1000 ft
4 AWG (1,000 ft)4 AWG1000 ft$1,480/1000 ft
2 AWG (1,000 ft)2 AWG1000 ft$2,320/1000 ft
1/0 AWG (1,000 ft)1/0 AWG1000 ft$3,600/1000 ft
2/0 AWG (1,000 ft)2/0 AWG1000 ft$4,480/1000 ft
4/0 AWG (1,000 ft)4/0 AWG1000 ft$5,200/1000 ft
250 MCM (1,000 ft)250 MCM1000 ft$6,560/1000 ft
350 MCM (1,000 ft)350 MCM1000 ft$8,960/1000 ft
500 MCM (1,000 ft)500 MCM1000 ft$12,000/1000 ft

Target prices are 20% below typical market. We source each order, then confirm price and quantity in a written quote. Typical lot: Reels totaling 2,000+ ft of feeder sizes. Orders under $5,000 may be combined with other requests or declined.