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Building Wire (THHN) and Fixture Wire (TFN/TFFN)

THHN Wire and THHN Cable

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THHN Wire and THHN Cable

Part Number	AWG Size	Conductor Stranding	Nom. O.D. (in)	Nom. Insul. Thick. (in)	Jacket Thick	Approx LBS/MFT	Ampacity @ 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

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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: