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THHN

THHN, MTW, THWN, AWM T90 Nylon, TWN75 (cUL)

Type THHN or THWN-2 conductors are primarily used in conduit as branch circuits in commercial or industrial applications, as specified by the National Electric Code. Type AWM or MTW conductors are primarily used as appliance or machine tool wiring, as specified by the National Electric Code. Type THHN or THWN-2 are available stranded in sizes 14 awg - 750 kcmiL, and as solid in sizes 14-10 awg. Stranded sizes 14 awg - 750 kcmiL are also rated as AWM or MTW. The conductors are soft-annealed, stranded or solid copper and are insulated with a tough heat and moisture resistant polyvinyl chloride (PVC), over which a nylon (polymide) jacket is applied. Sizes #4 – 750MCM made with friction reducing nylon jacket to aid in the installation process.

Standards & Specifications

  • 600V Rated
  • UL 83, 1063, 758; Sunlight Resistant; VW-1 Rated
  • Cable Tray Use 1/0 & Larger
  • NEMA Publication No. WC70; Gasoline & Oil Resistant I
  • c(UL) On All Sizes
  • ARRA 2009 Section 1605 "Buy American" Compliant
  • Available in low and high voltage colors
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Wire Size & Specs

ConductorAmpacity*
Size (AWG) Stranding Insulation Thickness
(Inches)
Nylon Jacket Nom. OD (Inches) 90° C Approx Net WT./MFT Standard Packaging
Options (ft)
Color Options
Conductor
Size (AWG)
14
Stranding
Solid
Insulation Thickness (Inches)
0.015
Nylon Jacket
4
Nom. OD (Inches)
0.102
Ampacity*
90° C
15
Approx Net WT./MFT
16
Standard Packaging Options (ft)
2000' Carton (4 x 500'), 1000' 2500' 5000' Reels
Color Options
Conductor
Size (AWG)
12
Stranding
Solid
Insulation Thickness (Inches)
0.015
Nylon Jacket
4
Nom. OD (Inches)
0.119
Ampacity*
90° C
20
Approx Net WT./MFT
24
Standard Packaging Options (ft)
2000' Carton (4 x 500'), 1000' 2500' 5000' Reels
Color Options
Conductor
Size (AWG)
10
Stranding
Solid
Insulation Thickness (Inches)
0.020
Nylon Jacket
4
Nom. OD (Inches)
0.150
Ampacity*
90° C
30
Approx Net WT./MFT
37
Standard Packaging Options (ft)
2000' Carton (4 x 500'), 1000' 2500' 5000' Reels
Color Options
Conductor
Size (AWG)
14
Stranding
19
Insulation Thickness (Inches)
0.015
Nylon Jacket
4
Nom. OD (Inches)
0.112
Ampacity*
90° C
15
Approx Net WT./MFT
16
Standard Packaging Options (ft)
2000' Carton (4 x 500'), 1000' 2500' 5000' Reels
Color Options
Conductor
Size (AWG)
12
Stranding
19
Insulation Thickness (Inches)
0.015
Nylon Jacket
4
Nom. OD (Inches)
0.131
Ampacity*
90° C
20
Approx Net WT./MFT
24
Standard Packaging Options (ft)
2000' Carton (4 x 500'), 1000' 2500' 5000' Reels
Color Options
Conductor
Size (AWG)
10
Stranding
19
Insulation Thickness (Inches)
0.020
Nylon Jacket
4
Nom. OD (Inches)
0.165
Ampacity*
90° C
30
Approx Net WT./MFT
37
Standard Packaging Options (ft)
2000' Carton (4 x 500'), 1000' 2500' 5000' Reels
Color Options
Conductor
Size (AWG)
8
Stranding
19
Insulation Thickness (Inches)
0.030
Nylon Jacket
5
Nom. OD (Inches)
0.218
Ampacity*
90° C
55
Approx Net WT./MFT
64
Standard Packaging Options (ft)
2000' Carton (4 x 500'), 1000' 2500' 5000' 10,000' Reels
Color Options
Conductor
Size (AWG)
6
Stranding
19
Insulation Thickness (Inches)
0.030
Nylon Jacket
5
Nom. OD (Inches)
0.256
Ampacity*
90° C
75
Approx Net WT./MFT
96
Standard Packaging Options (ft)
2000' Carton (4 x 500'), 1000' 2500' 5000' 10,000' Reels
Color Options
Conductor
Size (AWG)
4
Stranding
19
Insulation Thickness (Inches)
0.040
Nylon Jacket
6
Nom. OD (Inches)
0.325
Ampacity*
90° C
95
Approx Net WT./MFT
155
Standard Packaging Options (ft)
2000' Carton (4 x 500'), 1000' 2500' 5000' 10,000' Reels
Color Options
Conductor
Size (AWG)
3
Stranding
19
Insulation Thickness (Inches)
0.040
Nylon Jacket
6
Nom. OD (Inches)
0.388
Ampacity*
90° C
130
Approx Net WT./MFT
235
Standard Packaging Options (ft)
2000' Carton (4 x 500'), 1000' 2500' 5000' 10,000' Reels
Color Options
Conductor
Size (AWG)
2
Stranding
19
Insulation Thickness (Inches)
0.040
Nylon Jacket
6
Nom. OD (Inches)
0.388
Ampacity*
90° C
130
Approx Net WT./MFT
235
Standard Packaging Options (ft)
2000' Carton (4 x 500'), 1000' 2500' 5000' 10,000' Reels
Color Options
Conductor
Size (AWG)
1
Stranding
19
Insulation Thickness (Inches)
0.050
Nylon Jacket
7
Nom. OD (Inches)
0.437
Ampacity*
90° C
150
Approx Net WT./MFT
300
Standard Packaging Options (ft)
500' 1000' 2500' 5000' Reels
Color Options
Conductor
Size (AWG)
1/0
Stranding
19
Insulation Thickness (Inches)
0.050
Nylon Jacket
7
Nom. OD (Inches)
0.477
Ampacity*
90° C
170
Approx Net WT./MFT
370
Standard Packaging Options (ft)
500' 1000' 2500' 5000' Reels
Color Options
Conductor
Size (AWG)
2/0
Stranding
19
Insulation Thickness (Inches)
0.050
Nylon Jacket
7
Nom. OD (Inches)
0.521
Ampacity*
90° C
195
Approx Net WT./MFT
465
Standard Packaging Options (ft)
500' 1000' 2500' 5000' Reels
Color Options
Conductor
Size (AWG)
3/0
Stranding
19
Insulation Thickness (Inches)
0.050
Nylon Jacket
7
Nom. OD (Inches)
0.521
Ampacity*
90° C
225
Approx Net WT./MFT
570
Standard Packaging Options (ft)
500' 1000' 2500' 5000' Reels
Color Options
Conductor
Size (AWG)
4/0
Stranding
19
Insulation Thickness (Inches)
0.050
Nylon Jacket
7
Nom. OD (Inches)
0.627
Ampacity*
90° C
260
Approx Net WT./MFT
720
Standard Packaging Options (ft)
500' 1000' 2500' 5000' Reels
Color Options
Conductor
Size (AWG)
250
Stranding
37
Insulation Thickness (Inches)
0.060
Nylon Jacket
8
Nom. OD (Inches)
0.711
Ampacity*
90° C
290
Approx Net WT./MFT
850
Standard Packaging Options (ft)
500' 1000' 2500' 5000' Reels
Color Options
Conductor
Size (AWG)
300
Stranding
37
Insulation Thickness (Inches)
0.060
Nylon Jacket
8
Nom. OD (Inches)
0.766
Ampacity*
90° C
320
Approx Net WT./MFT
1011
Standard Packaging Options (ft)
500' 1000' 2500' 5000' Reels
Color Options
Conductor
Size (AWG)
350
Stranding
37
Insulation Thickness (Inches)
0.060
Nylon Jacket
8
Nom. OD (Inches)
0.817
Ampacity*
90° C
350
Approx Net WT./MFT
1172
Standard Packaging Options (ft)
500' 1000' 2500' 5000' Reels
Color Options
Conductor
Size (AWG)
400
Stranding
37
Insulation Thickness (Inches)
0.060
Nylon Jacket
8
Nom. OD (Inches)
0.864
Ampacity*
90° C
380
Approx Net WT./MFT
1333
Standard Packaging Options (ft)
500' 1000' 2500' 5000' Reels
Color Options
Conductor
Size (AWG)
500
Stranding
37
Insulation Thickness (Inches)
0.060
Nylon Jacket
8
Nom. OD (Inches)
0.949
Ampacity*
90° C
430
Approx Net WT./MFT
1653
Standard Packaging Options (ft)
500' 1000' 2000' 2500' Reels
Color Options
Conductor
Size (AWG)
600
Stranding
61
Insulation Thickness (Inches)
0.070
Nylon Jacket
9
Nom. OD (Inches)
1.051
Ampacity*
90° C
475
Approx Net WT./MFT
1985
Standard Packaging Options (ft)
500' 1000' 2000' Reels
Color Options
Conductor
Size (AWG)
750
Stranding
61
Insulation Thickness (Inches)
0.070
Nylon Jacket
9
Nom. OD (Inches)
1.126
Ampacity*
90° C
535
Approx Net WT./MFT
2462
Standard Packaging Options (ft)
500' 1000' 2000' Reels
Color Options
*Allowable ampacity shown above is per National Electrical Code. The above data is approximate and subject to normal manufacturing tolerances.

Custom Options

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Striping

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Sizes: 12|14|1/0|2/0
Paralleling

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Pulling Heads

Ensure a strong mechanical connection to any conductor.

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Sequential Footmarks

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All Sizes

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