THHN
THHN, MTW, THWN, AWM T90 Nylon, TWN75 (cUL)
Alan Wire 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 14-750 MCM are made with a friction-reducing nylon jacket to aid in the installation process.
Standards & Specifications
- 600V Rated
- UL 83, 1063, 758
- Sunlight Resistant 1/0 & Larger
- VW-1 Rated
- Cable Tray Use 1/0 & Larger
- NEMA Publication No. WC70
- Gasoline & Oil Resistant II
- c(UL) On All Sizes
- ARRA 2009 Section 1605 "Buy American" Compliant
- Available in Low and High Voltage Colors
Wire Size & Specs
| Conductor | Ampacity* | |||||||
|---|---|---|---|---|---|---|---|---|
| Size (AWG) | Stranding | PVC Insulation | Nylon Jacket | Nom. OD (Mils) |
90° THHN/ THWN-2 |
Approx Net WT./MFT | Standard Packaging Options (ft) |
Color Options |
Conductor Size (AWG) *14 |
Stranding Solid |
PVC Insulation 0.015 |
Nylon Jacket 4 |
Nom. OD (Mils) 102 |
Ampacity* 90° THHN/THWN-2 25 |
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 |
PVC Insulation 0.015 |
Nylon Jacket 4 |
Nom. OD (Mils) 119 |
Ampacity* 90° THHN/THWN-2 30 |
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 |
PVC Insulation 0.020 |
Nylon Jacket 4 |
Nom. OD (Mils) 150 |
Ampacity* 90° THHN/THWN-2 40 |
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 |
PVC Insulation 0.015 |
Nylon Jacket 4 |
Nom. OD (Mils) 112 |
Ampacity* 90° THHN/THWN-2 25 |
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 |
PVC Insulation 0.015 |
Nylon Jacket 4 |
Nom. OD (Mils) 131 |
Ampacity* 90° THHN/THWN-2 30 |
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 |
PVC Insulation 0.020 |
Nylon Jacket 4 |
Nom. OD (Mils) 165 |
Ampacity* 90° THHN/THWN-2 40 |
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 |
PVC Insulation 0.030 |
Nylon Jacket 5 |
Nom. OD (Mils) 218 |
Ampacity* 90° THHN/THWN-2 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 |
PVC Insulation 0.030 |
Nylon Jacket 5 |
Nom. OD (Mils) 256 |
Ampacity* 90° THHN/THWN-2 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 |
PVC Insulation 0.040 |
Nylon Jacket 6 |
Nom. OD (Mils) 325 |
Ampacity* 90° THHN/THWN-2 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 |
PVC Insulation 0.040 |
Nylon Jacket 6 |
Nom. OD (Mils) 346 |
Ampacity* 90° THHN/THWN-2 115 |
Approx Net WT./MFT 188 |
Standard Packaging Options (ft) 2000' Carton (4 x 500'), 1000' 2500' 5000' 10,000' Reels | Color Options |
Conductor Size (AWG) 2 |
Stranding 19 |
PVC Insulation 0.040 |
Nylon Jacket 6 |
Nom. OD (Mils) 388 |
Ampacity* 90° THHN/THWN-2 130 |
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 |
PVC Insulation 0.050 |
Nylon Jacket 7 |
Nom. OD (Mils) 437 |
Ampacity* 90° THHN/THWN-2 150 |
Approx Net WT./MFT 300 |
Standard Packaging Options (ft) 500' 1000' 2500' 5000' Reels | Color Options |
Conductor Size (AWG) 1/0 |
Stranding 19 |
PVC Insulation 0.050 |
Nylon Jacket 7 |
Nom. OD (Mils) 477 |
Ampacity* 90° THHN/THWN-2 170 |
Approx Net WT./MFT 370 |
Standard Packaging Options (ft) 500' 1000' 2500' 5000' Reels | Color Options |
Conductor Size (AWG) 2/0 |
Stranding 19 |
PVC Insulation 0.050 |
Nylon Jacket 7 |
Nom. OD (Mils) 521 |
Ampacity* 90° THHN/THWN-2 195 |
Approx Net WT./MFT 465 |
Standard Packaging Options (ft) 500' 1000' 2500' 5000' Reels | Color Options |
Conductor Size (AWG) 3/0 |
Stranding 19 |
PVC Insulation 0.050 |
Nylon Jacket 7 |
Nom. OD (Mils) 571 |
Ampacity* 90° THHN/THWN-2 225 |
Approx Net WT./MFT 570 |
Standard Packaging Options (ft) 500' 1000' 2500' 5000' Reels | Color Options |
Conductor Size (AWG) 4/0 |
Stranding 19 |
PVC Insulation 0.050 |
Nylon Jacket 7 |
Nom. OD (Mils) 627 |
Ampacity* 90° THHN/THWN-2 260 |
Approx Net WT./MFT 720 |
Standard Packaging Options (ft) 500' 1000' 2500' 5000' Reels | Color Options |
Conductor Size (AWG) 250 MCM |
Stranding 37 |
PVC Insulation 0.060 |
Nylon Jacket 8 |
Nom. OD (Mils) 711 |
Ampacity* 90° THHN/THWN-2 290 |
Approx Net WT./MFT 850 |
Standard Packaging Options (ft) 500' 1000' 2500' 5000' Reels | Color Options |
Conductor Size (AWG) 300 MCM |
Stranding 37 |
PVC Insulation 0.060 |
Nylon Jacket 8 |
Nom. OD (Mils) 766 |
Ampacity* 90° THHN/THWN-2 320 |
Approx Net WT./MFT 1011 |
Standard Packaging Options (ft) 500' 1000' 2500' 5000' Reels | Color Options |
Conductor Size (AWG) 350 MCM |
Stranding 37 |
PVC Insulation 0.060 |
Nylon Jacket 8 |
Nom. OD (Mils) 817 |
Ampacity* 90° THHN/THWN-2 350 |
Approx Net WT./MFT 1172 |
Standard Packaging Options (ft) 500' 1000' 2500' 5000' Reels | Color Options |
Conductor Size (AWG) 400 MCM |
Stranding 37 |
PVC Insulation 0.060 |
Nylon Jacket 8 |
Nom. OD (Mils) 864 |
Ampacity* 90° THHN/THWN-2 380 |
Approx Net WT./MFT 1333 |
Standard Packaging Options (ft) 500' 1000' 2500' 5000' Reels | Color Options |
Conductor Size (AWG) 500 MCM |
Stranding 37 |
PVC Insulation 0.060 |
Nylon Jacket 8 |
Nom. OD (Mils) 949 |
Ampacity* 90° THHN/THWN-2 430 |
Approx Net WT./MFT 1653 |
Standard Packaging Options (ft) 500' 1000' 2000' 2500' Reels | Color Options |
Conductor Size (AWG) 600 MCM |
Stranding 61 |
PVC Insulation 0.070 |
Nylon Jacket 9 |
Nom. OD (Mils) 1051 |
Ampacity* 90° THHN/THWN-2 475 |
Approx Net WT./MFT 1985 |
Standard Packaging Options (ft) 500' 1000' 2000' Reels | Color Options |
Conductor Size (AWG) 750 MCM |
Stranding 61 |
PVC Insulation 0.070 |
Nylon Jacket 9 |
Nom. OD (Mils) 1126 |
Ampacity* 90° THHN/THWN-2 535 |
Approx Net WT./MFT 2462 |
Standard Packaging Options (ft) 500' 1000' 2000' Reels | Color Options |
| *Not suitable for MTW applications. | ||||||||
Custom Options
Striping
Stripe your wire for better organizing.
All Sizes
Cutting
Get the precise cuts your customers need.
Sizes: 12|14|1/0|2/0
Paralleling
Take your pick of conductors for job-specific cables.
All Sizes
Pulling Heads
Ensure a strong mechanical connection to any conductor.
All Sizes
Sequential Footmarks
Reduce waste with easy to read and reliable units of measurement.
All Sizes
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