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Current Location: HomeWire & CableHook-Up Wire / Lead WireBuilding Wire (THHN) and Fixture Wire (TFN/TFFN)THHN Wire and THHN Cable 

THHN Wire and THHN Cable

THHN Wire and THHN Cable

THHN Wire and THHN Cable

Part Number AWG SizeConductor StrandingNom. O.D. (in)Nom. Insul. Thick. (in)Jacket ThickApprox LBS/MFTAmpacity @ 90°C
THHN 14 1 14 Solid 0.1020 0.015 0.004 15.00 15
THHN 14 19 14 19/27 0.1090 0.015 0.004 16.00 15
THHN 12 1 12 Solid 0.1190 0.015 0.004 23.00 20
THHN 12 19 12 19/25 0.1280 0.015 0.004 24.00 20
THHN 10 1 10 Solid 0.1610 0.020 0.004 38.00 30
THHN 10 19 10 19/23 0.1610 0.020 0.004 38.00 30
THHN 8 19 8 19/21 0.2130 0.030 0.005 63.00 55
THHN 6 19 6 19/.0372 0.2490 0.030 0.005 95.00 75
THHN 4 19 4 19/.0469 0.3180 0.040 0.006 152.00 95
THHN 3 19 3 19/.0526 0.3460 0.040 0.006 189.00 110
THHN 2 19 2 19/.0591 0.3780 0.040 0.006 234.00 130
THHN 1 19 1 19/.0664 0.4350 0.050 0.007 299.00 150
THHN 1/0 19 1/0 19/.0745 0.4740 0.050 0.007 372.00 170
THHN 2/0 19 2/0 19/.0837 0.5180 0.050 0.007 462.00 195
THHN 3/0 19 3/0 19/.0940 0.5680 0.050 0.007 575.00 225
THHN 4/0 19 4/0 19/.1055 0.6240 0.050 0.007 718.00 260
THHN 250 37 250 37/.0822 0.6780 0.060 0.008 851.00 290
THHN 300 37 300 37/.0822 0.7300 0.060 0.008 1012.00 320
THHN 350 37 350 37/.0973 0.7770 0.060 0.008 1174.00 350
THHN 400 37 400 37 0.8210 0.060 0.008 1334.00 380
THHN 500 37 500 37 0.9020 0.060 0.008 1655.00 430
THHN 600 61 600 61 0.9980 0.070 0.009 1987.00 475
THHN 750 61 750 61 1.1260 0.070 0.009 2464.00 535
THHN 1000 61 1000 61 1.2750 0.070 0.009 1275.00 615

THHN Wire
Building Wire
THHN Cable: 600V
THHN AWG 14-350 kcmil
RoHS Hook-up Wire RoHS Available — just ask your sales rep for THHN Wire RoHS Certificate!

Interested in THHN Striping? We've got you covered?

THHN Copper Wire Applications:

  • THHN electrical wire is meant for use as general purpose wiring for installation in conduit or other recognized raceway. THHN may also be used for machine tool, appliance and control circuit wiring. Read on below for THHN wire specs.

THHN Cable Approvals:

  • UL listed Stds. 83 & 1063 as: Type THHN Wire 90°C in dry locations, Type THWN Wire 75°C in wet locations.
  • A-A-59544, NEMA WC-5, UL-758
  • CSA approval upon request

Building Wire - THHN Wire Specifications:

  • 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 available upon request.
  • Gasoline & oil resistant - Type MTW 90°C Machine Tool Wire (stranded only) 105°C AWM, 80°C when exposed to oil.

Building Wire - THHN Wire Ratings:

  • THHN-THWN: 75°C Oil, 75°C Wet, 90°C Dry, 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

Building Wire - THHN Wire Printing:

  • 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.

Customization Services for THHN Wire include: