Take care of general purpose wiring in branch circuits, control circuits, machine tools, and appliances with THHN, the most commonly used building wire. THHN (thermoplastic high heat-resistant nylon) wire is available in a wider range of gauges and is more heat resistant.
THHN is a thermoplastic, high-heat resistant, nylon coated wire. THWN is essentially the same as THHN, but can withstand higher temperatures in both dry and wet conditions. THHN can only withstand temperatures of up to 75°C in wet conditions, while THWN can handle up to 90°C. In most cases, these wires can be used interchangeably in general purpose wiring in branch circuits, control circuits, machine tools, and appliances.
#8 THHN/THWN-2 Wire
Cut to length – sold by the foot. Enter the desired footage in the Quantity box.
Minimum 1′ to maximum 2500′. Please call for longer put ups.
Type THHN/THWN-2 building wire is intended for general purpose applications as defined by the National Electrical Code (NEC). Type THHN-THWN-2 is permitted for new construction or rewiring for 600-volt applications. Applications requiring Type THHN or THWN-2, the conductor is appropriate for use in wet or dry locations at temperatures not to exceed 90°C or not to exceed 75°C in oil or coolants. Applications requiring Type MTW conductor is appropriate for use in dry locations at 90°C, or not to exceed 60°C in wet locations or where exposed to oils or coolants. Applications requiring Type AWM conductor is appropriate for use at temperatures to not exceed 105°C in dry locations.
Also Known As:
8 Gauge Wire, #8 Copper wire, 8 AWG THWN-2, 8 Gauge THHN, hook up wire, conduit wire, hot tub wire, lighting wire, nylon copper wire, construction cable, etc…
Nylon outer jacket for easy pulling. VW-1 rated 14 AWG – 8 AWG. All sizes are rated gasoline and oil-resistant II.
A tough, polyamide, Nylon outer covering per UL-1063 and UL-83.
Underwriters Laboratories Standards UL-83, UL-1063, UL-758
AWM Spec 1316, 1317, 1318, 1319, 1320, 1321
ASTM Stranding Class B3, B8, B787
Federal Specification A-A-59544
Canadian Standards Association C22.2 No. 75
NEMA WC70/ICEA S-95-658
Institute of Electrical and Electronics Engineers
Solid, uncoated copper conductors per ASTM-B3
Stranded, uncoated copper conductors per ASTM-B3, ASTM-B787 and ASTM-B8
Color-coded Polyvinyl Chloride (PVC), heat and moisture-resistant, flame-retardant compound per UL-1063 and UL-8
8 AWG THHN/THWN-2 Specifications*:
|Number of Strands:||19|
|Cross Section Area:||18.37 mm2|
|PVC Insulation Thickness (Conductor):||0.760 mm / 0.030 inches|
|Nylon Jacket Thickness:||0.130 mm / 0.005 inches|
|Outside Diameter:||5.39 mm / 0.212 inches|
|Weight:||0.069 lbs per ft|
What Is the Ampacity for #8 AWG THHN?
Allowable Ampacity: 40 Amps at 60ºC / 50 Amps at 75ºC / 55 Amps at 90ºC
*Info provided on this page is subject to change based on different manufacturers variances.
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