SIMpull THHN® Copper Wire

300-37 SD CU SIMpull (TM) THHN-THWN-2 MTW BLACK 2500 FT

Southwire #: 20510416

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

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

Stock #	20510416 20510416
Size (AWG or kcmil) (mm2)	300 KCMIL 300 KCMIL
No. of Conductors	1 1
No. of Strands	37 37
Nom. OD (mils) (mm)	736 18.69	mils mm
Insulation Thickness (mils) (mm)	60 1.52	mils mm
Jacket Thickness (mils) (mm)	9 0.23	mils mm
Nominal Total Weight (lbs/1000') (kgs/km)	1005 1496	lbs/1000' kgs/km
Allowable Ampacity at 60C	240 240
Allowable Ampacity at 75C	285 285
Allowable Ampacity at 90C	320 320
UPC #	032886134470 032886134470

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.