Open: $6.0665 USD/lb
04/17/2026
Close: $6.0665 USD/lb
04/16/2026
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04/01/2026
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03/01/2026
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SIMpull® THHN/THWN-2 Copper
SPEC: 10000

400-37 SD CU SIMpull (TM) THHN-THWN-2 MTW PURPLE 2500 FT SPEC10000 55102901

Southwire #: 55102901

600 Volts. Copper Conductor. Thermoplastic Insulation/Nylon Sheath, Heat, Moisture, Gasoline and Oil Resistant II. Rated THHN and THWN-2. Also rated MTW. SIMpull® Technology for Easier Pulling.

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Application & Features

Southwire® SIMpull THHN® copper conductors 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. SIMpull THHN® copper conductors are designed to be installed without application of a pulling lubricant.

  • THWN-2- Wet or dry locations not to exceed 90° C or locations not to exceed 75° C when exposed to oil

Specifications

Cond. Size 400 KCMIL 400 KCMIL
Conductor Number 1 1
Cond. Strands 37 37
Diameter Over Conductor (in) (cm) 0.705 1.79 inch cm
Insulation Thickness (mils) (mm) 62 1.57 mils mm
Jacket Thickness (mils) (mm) 9 0.23 mils mm
Approx. OD (in) (cm) 0.848 2.15 inch cm
Copper Weight (lbs/1000') (kgs/km) 1235 1838 lbs/1000' kgs/km
Approx. Weight (lbs/1000') (kgs/km) 1341 1996 lbs/1000' kgs/km

Standards & References

Southwire® SIMpull THHN® copper conductors comply with the following:

  • ASTM - B3
  • UL Standards 83 and 758
  • CSA C22.2 No. 75
  • NOM-ANCE 90° C
  • Federal Specification A-A-59544
  • National Electrical Code, NFPA 70
  • CT Rated
  • VW-1
  • FT1
  • Sunlight Resistant
  • MTW
  • RoHS/REACH Compliant

Construction

Southwire® SIMpull THHN® copper conductors are made with soft drawn copper. Compressed copper stranding. The wire is covered with a tough heat and moisture resistant PVC insulation with an overall nylon jacket utilizing SIMpull® Technology. Marked as THWN-2. Marked sunlight resistant.

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