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Thhn Thwn2

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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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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
ConductorsCompact 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
870.1340.030.0050.20426354045
670.1690.030.0050.23937405055
470.2130.040.0060.30560556575
370.2380.040.0060.3373657585
270.2680.040.0060.36887590100
180.2990.050.0070.41311585100115
1/0100.3360.050.0070.45139100120135
2/0120.3760.050.0070.49169115135150
3/0150.4230.050.0070.537206130155175
4/0190.4750.050.0070.589253150180205
250220.520.060.0080.656306170205230
300210.570.060.0080.706359195230260
350240.6160.060.0080.752411210250280
400270.6590.060.0080.795463225270305
500340.7360.060.0080.872568260310350
600410.8130.070.0090.971690285340385
700450.8770.070.0091.035794315375425
750470.9080.070.0091.066844320385435
900580.9990.070.0091.157999355425480
1000581.060.070.0091.221100375445500

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