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  • THHN or THWN-2 Cable
  • THHN or THWN-2 Cable

THHN or THWN-2 Cable

Application: THHN or THWN-2 cable are primarily used in conduit and cable trays for services, feeders, and branch circuits in commercial or industrial applications as specified in the National Electrical Code. Voltage for all applications is 600 volts.

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  • Description
  • Parameter
APPLICATION:
THHN or THWN-2 cable are primarily used in conduit and cable trays for services, feeders, and branch circuits in commercial or industrial applications as specified in the National Electrical Code. Voltage for all applications is 600 volts.

THHN conductors are designed to be used without application of pulling lubricant. Allowable temperatures are as follows:
THHN Nylon- Dry locations should not exceed 90℃;
THWN-2- Wet or dry locations should not exceed 90℃ and It should not exceed 75℃ when exposed to oil.

THHN/THWN-2 NYLON - ALUMINUM CONDUCTOR are Compact Stranded Conductors, Aluminum Alloy 8000 Series per ASTM B800; ASTM B801; ASTM B836;Color-coded Polyvinyl Chloride (PVC) insulated, heat and moisture-resistant, flame retardant compound per UL-83;tough, polyamide, nylon outer covering per UL-83.

THHN/THWN-2 NYLON - COPPER CONDUCTOR are soft annealed copper. #14 - 4/0 AWG uses a combination unilay strand and 250 kcmil and larger uses a compressed copper strand. The wire is insulated with a tough heat and moisture resistant poly vinyl chloride (PVC), over which a nylon (polyamide) jacket is applied. Available in black, white, red, blue, purple, green, yellow, orange, brown and gray. Some colors are subject to economic order quantity.Marked sunlight resistant in sizes 2 AWG and larger.
        
THHN/THWN-2 - NYLON - ALUMINUM CONDUCTOR - 600V
Conductors Compact Diameter of Aluminum Conductor (inch) PVC Insulation Thickness
(inch)
Nylon Jacket Thickness
(inch)
Approximate Outside Diameter
(inch)
Approximate Net Weight (lbs/1000 ft) *Allowable Ampacities (amps)
Size
(AWG orKCMIL)
No.of Strands *60°C *75°C *90°C
8 7 0.134 0.03 0.005 0.204 26 35 40 45
6 7 0.169 0.03 0.005 0.239 37 40 50 55
4 7 0.213 0.04 0.006 0.305 60 55 65 75
3 7 0.238 0.04 0.006 0.33 73 65 75 85
2 7 0.268 0.04 0.006 0.36 88 75 90 100
1 8 0.299 0.05 0.007 0.413 115 85 100 115
1/0 10 0.336 0.05 0.007 0.45 139 100 120 135
2/0 12 0.376 0.05 0.007 0.49 169 115 135 150
3/0 15 0.423 0.05 0.007 0.537 206 130 155 175
4/0 19 0.475 0.05 0.007 0.589 253 150 180 205
250 22 0.52 0.06 0.008 0.656 306 170 205 230
300 21 0.57 0.06 0.008 0.706 359 195 230 260
350 24 0.616 0.06 0.008 0.752 411 210 250 280
400 27 0.659 0.06 0.008 0.795 463 225 270 305
500 34 0.736 0.06 0.008 0.872 568 260 310 350
600 41 0.813 0.07 0.009 0.971 690 285 340 385
700 45 0.877 0.07 0.009 1.035 794 315 375 425
750 47 0.908 0.07 0.009 1.066 844 320 385 435
900 58 0.999 0.07 0.009 1.157 999 355 425 480
1000 58 1.06 0.07 0.009 1.22 1100 375 445 500

THHN /THWN-2 -NYLON-COPPER CONDUCTOR -600 Volts.
Conductor Insulation Thickness
(mils)
Jacket Thickness
(mils)
Nominal O.D.
(mils)
Approx. Weight per 1000'
(lbs)
Allowable Ampacities+
Size
(AWG or kcmil)
Number of Strands 60º C 75º C 90º C
14* 1 15 4 102 15 15 15 15
12* 1 15 4 119 23 20 20 20
10* 1 20 4 150 36 30 30 30
14* 19 15 4 109 16 15 15 15
12* 19 15 4 128 24 20 20 20
10* 19 20 4 161 38 30 30 30
8 19 30 5 213 63 40 50 55
6 19 30 5 249 95 55 65 75
4 19 40 6 318 152 70 85 100
3 19 40 6 346 189 85 100 115
2 19 40 6 378 234 95 115 130
1 19 50 7 435 299 110 130 145
1/0 19 50 7 474 372 125 150 170
2/0 19 50 7 518 462 145 175 195
3/0 19 50 7 568 575 165 200 225
4/0 19 50 7 624 718 195 230 260
250 37 60 8 694 851 215 255 290
300 37 60 8 747 1012 240 285 320
350 37 60 8 797 1174 260 310 350
400 37 60 8 842 1334 280 335 380
500 37 60 8 926 1655 320 380 430
600 61 70 9 1024 1987 350 420 475
750 61 70 9 1126 2464 400 475 535
1000 61 70 9 1275 3257 455 545 615

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