Our THHN Wire is made up of Thermoplastic High Heat Nylon (THHN) and features PVC insulation and a nylon jacket. You can purchase THHN through our website in both solid conductor and stranded conductor. The bare copper conductor is available stranded for sizes 10AWG and larger and stranded or solid for gauges 14-10. This THHN wire is a very popular building wire because of its high voltage rating of 600V. The THHN wire jacket is abrasion resistant, making this wire suitable for dry and damp conditions. However, this wire's jacket releases toxic gases if it comes into contact with fire. Because of this, it is not suitable for use in outside or direct burial applications. This copper wire is also gasoline and oil-resistant. This building wire wire is also meant for use as general-purpose wiring for installation in conduit, cable tray, or other recognized raceway. It is suitable for installation as a building wire in most building codes set by the NEC. This wire is also suitable for use in machine tools, appliances, and control circuit wiring. 

24 items

  • THHN 14 1
    $0.00 / 100 FT
    • Ampacity (90C): 15
    • Approx LBS/MFT: 15.00
    • AWG Size: 14
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  • THHN 14 19
    $0.00 / 100 FT
    • Ampacity (90C): 15
    • Approx LBS/MFT: 16.00
    • AWG Size: 14
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  • THHN 12 1
    $0.00 / 100 FT
    • Ampacity (90C): 20
    • Approx LBS/MFT: 23.00
    • AWG Size: 12
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  • THHN 12 19
    $0.00 / 100 FT
    • Ampacity (90C): 20
    • Approx LBS/MFT: 24.00
    • AWG Size: 12
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  • THHN 10 1
    $0.00 / 100 FT
    • Ampacity (90C): 30
    • Approx LBS/MFT: 38.00
    • AWG Size: 10
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  • THHN 10 19
    $0.00 / 100 FT
    • Ampacity (90C): 30
    • Approx LBS/MFT: 38.00
    • AWG Size: 10
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  • THHN 8 19
    $0.00 / 50 FT
    • Ampacity (90C): 55
    • Approx LBS/MFT: 63.00
    • AWG Size: 8
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  • THHN 6 19
    $0.00 / 50 FT
    • Ampacity (90C): 75
    • Approx LBS/MFT: 95.00
    • AWG Size: 6
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THHN Building Wire Specifications

THHN Wire Construction:

  • Conductor: Bare Copper, Soft Drawn
  • Insulation: Polyvinylchloride (PVC)
  • Jacket: Nylon
  • Standard Colors (denoted by a dash and number code following the part number below): Black (-0), Brown (-1), Red (-2), Orange (-3), Yellow (-4), Green (-5), Blue (-6), Violet (-7), Gray (-8), White (-9), Pink (-10), Tan (-11); Striping and other colors are available upon request.

THHN Wire Ratings and Approvals:

  • UL listed Stds. 83 & 1063
    • Type THHN/THWN Wire: 90°C in dry locations,75°C in wet locations, 75°C Oil, 600V
    • THWN-2: 75°C Oil, 90°C Wet, 90°C Dry, 600V
    • MTW: 60°C Oil, 60°C Wet, 90°C Dry, 600V
    • AWM 1316 to 1321: 80°C Oil, - Wet, 105°C Dry, 600V
    • AWM 1408 to 1414: 60°C Oil, 60°C Wet, 90°C Dry, 600V
    • AWM 1452 to 1453: 80°C Oil, - Wet, 90°C Dry, 600V
    • T90 NYLON: 60°C Oil, - Wet, 90°C Dry, 1000V
    • TWN 75: - Oil, 75°C Wet, - Dry, 600V
  • A-A-59544, NEMA WC-5, UL-758
  • CSA approval upon request
  • Type MTW 90°C Machine Tool Wire (stranded only) 105°C AWM, 80°C when exposed to oil.

Printing Options:

  • 14 - 10 AWG (solid conductors): "AWG Type THHN or THWN GASOLINE AND OIL RES II 600V (UL) or AWM VW-1--C-UL Type T90 NYLON or TWN 75 FT-1"
  • 14 AWG - 750 KCMIL (stranded): "AWG Type MTW or THHN or THWN or GASOLINE AND OIL RES II 600V (UL) or AWM--C-UL Type T90 Nylon or TWN 75." "VW-1" and "FT1" on 14 - 6 AWG and "for CT USE SUN RES" on 1/0 AWG and larger in black. THWN-2 on 8 AWG and larger.

RoHS Available — just ask your sales rep for a RoHS Certificate!