Product Information

Specification

300 MCM THHN THWN-2 Stranded Copper Building Wire

Applications:

SIMpull THHN/THWN-2 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 and other applicable codes and standards. Voltage for all applications is 600 volts. SIMpull THHN/THWN-2 copper conductors are designed to be installed without the application of a pulling lubricant. These conductors have multiple ratings depending upon the product application. 600 Volts. Copper Conductor. PVC Insulation/Nylon Sheath THHN/THWN-2. Heat, Moisture, Gasoline and Oil Resistant II.

Allowable temperatures are as follows:

- THHN or T90 Nylon- Dry locations not to exceed 90°C
- THWN-2 - Wet or dry locations not to exceed 90° C or locations not to exceed 75°C when exposed to oil
- TWN75- Wet locations not to exceed 75°C
- MTW- Wet locations or when exposed to oil at temperatures not to exceed 60°C or dry locations not to exceed 90°C (with ampacity limited to that for 75°C conductor temperature per NFPA 79)
- AWM- Dry locations not to exceed 105°C only when rated and used as appliance wiring material

Also Known As:

300 copper wire, 300 building cable, 300 hook up wire, 300 conduit wire, 300 nylon wire, 300 construction cable, 300 thermoplastic-insulated copper wire, 300 THHN-PVC tray cable, 300 CU THHN THWN-2, 300 CU Building Wire, 300 Black Stranded CU SIMpull THHN Wire, Southwire 20510401, Southwire Wire, 300 MCM THHN/THWN-2 Wire, 300 MCM THHN/THWN-2 Building Wire, 300 Black Stranded Cu SIMpull THHN Wire, 300 MCM CU Wire, 300 MCM Strand Copper Wire, Nylon copper wire.

Construction:

Conductor: 

THHN THWN-2 conductors are constructed of annealed soft copper that follow ASTM B787 and ASTM B8 standard. 

Insulation:

The cable is insulated with a thermoset plastic jacket (PVC) that is flame-retardant, sunlight-resistant, lead-free, strong, and stable. Without being too bulky, it ensures that the cable can be used in harsh conditions. The jacket is color-coded in accordance with ICEA Method 4.

Sheath:

Nylon jacket utilizing SIMpull Technology

Features:

• Sunlight resistant #8 AWG and larger
• Gasoline and Oil Resistant II
• CT Rated 1/0 AWG and Larger
• VW-1 All Sizes
• FT-1 All Sizes
• AWM- Sizes 14 through 6 AWG
• MTW- Stranded Constructions Only
• RoHS Compliant
• LEED v4.1 Materials & Resources Credit MRc6; PBT (Lead Content Below 300 ppm Threshold)

Standards:

• ASTM B8 Concentric-Lay-Stranded Copper Conductors
• ASTM B787 19 Wire Combination Unilay-Stranded Copper Conductors
• UL 83 Thermoplastic Insulated Wires and Cables
• UL 758 Standard for Appliance Wiring Material
• UL 1063 Machine Tool Wiring (MTW)
• UL 1685 Vertical-Tray Fire Propagation and Smoke Release Test (1/0 and Larger)
• CSA C22.2 No. 75 Thermoplastic Insulated Wires and Cables
• ICEA S-95-658 (NEMA WC70) Power Cables Rated 2000 Volts or Less for the Distribution of Electrical Energy
• Federal Specication A-A-59544
• NMX-J-010-ANCE Thermoplastic insulated wires and cables
• NOM-063-SCFI Electrical Products – Conductors – Safety Requirements

Specifications:

• Size : 300 MCM
• Number of  Strands: 37
• Diameter Over Conductor ( Inch ): 0.610
  
• Insulation Thickness (mils): 62
• Jacket Thickness (mils): 9
• Aprox. OD (inches): 0.753
• Copper Weight ( lbs/mft ): 926 lbs
  
• Net Weight  ( lbs/mft ): 1016 lbs
• Minimum Bend Radius: 3.0 inch
• Max Pull Tension: 2400 lb
• Allowable Ampacity At 75°C: 285 Amp
• Allowable Ampacity At 90°C: 320 Amp
• Southwire Part ( SimPull): 20510401

*Data provided on this page is subject to change based on different manufacturers' variances

** Images are for display purposes only refer to Product Technical Details for accurate information on the product.

In the case the material only comes in a predetermined color or doesn’t come with any color