Southwire 20492512 Thhn Thwn 8 Awg 40A Building Wire

Product Description

The SOUTHWIRE 20492512 is a THHN/THWN-rated stranded copper building wire in 8 AWG with a 40-amp capacity and a 600-volt rating. It features a thermoplastic insulation layer and a nylon jacket, which together provide resistance to abrasion, heat, moisture, oil, and gasoline. The wire is built with 19 strands for flexibility during pull-through in conduit. It is used in branch circuit and feeder wiring installations and is handled by licensed electricians in residential and commercial construction. This coil is sold in 1-foot increments with a 250-foot minimum cut length and a 500-foot total coil length.

This wire suits dry and wet locations where THHN and THWN dual-rated conductors are required. It is appropriate for use in conduit runs in commercial buildings, multi-family residential construction, and light industrial facilities. The green jacket color designates this conductor as an equipment grounding conductor under standard NEC wiring conventions. Electricians running grounding conductors in panel feeders, subpanel circuits, or equipment branch circuits will find this wire fits standard conduit fill calculations for 8 AWG conductors.

Key Features

• Dual-rated THHN/THWN thermoplastic insulation with nylon jacket for use in dry and wet conduit applications
• 8 AWG stranded copper with 19 strands for flexibility during conduit installation
• 40-amp ampacity rated at 600 volts
• Green jacket designates use as an equipment grounding conductor per NEC conventions
• Resistant to abrasion, gasoline, heat, moisture, and oil
• Meets ASTM specifications, CSA, Federal Specification A-A-59544, RoHS, UL 83, and UL 1063 (MTW)

Compatibility

Designed for use as a grounding or branch-circuit conductor in conduit systems where THHN or THWN dual-rated 8 AWG copper wire is specified. Sold in 1-foot increments with a 250-foot minimum cut length from a 500-foot coil.

Installation Notes

Installation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize the circuit and verify zero voltage with a meter before making any connections. Pull wire through listed conduit using appropriate wire-pulling lubricant rated for thermoplastic insulation. Green-jacketed conductors must be reserved for equipment grounding use only and must not be re-identified for use as an ungrounded or grounded conductor.