Southwire 20491712 Thhn Thwn 8 Awg 40A Building Wire

Product Description

The SOUTHWIRE 20491712 is a THHN/THWN-rated stranded copper building wire designed for general wiring applications in commercial and residential electrical systems. Sized at 8 AWG with a 40-amp capacity and a 600-volt rating, this wire features a thermoplastic insulation layer and a nylon jacket for added protection. The 19-strand copper core provides flexibility during pull-through in conduit runs. The blue jacket color supports circuit identification in multi-wire installations. Licensed electricians and electrical contractors are the primary installers for this product type.

This wire is suited for use in conduit, raceways, and cable trays in both dry and wet locations. THHN/THWN dual-rated wire handles a broad range of branch circuit, feeder, and service wiring applications. It performs in environments where resistance to abrasion, heat, moisture, oil, and gasoline exposure is required. The 500-foot coil with a 250-foot minimum cut length makes it practical for larger commercial jobs and panel feed runs where significant linear footage is needed.

Key Features

• THHN/THWN dual rating for use in both dry and wet or damp locations
• 8 AWG stranded copper core with 19 strands for improved flexibility
• 40-amp ampacity at 600 volts
• Nylon outer jacket with thermoplastic insulation for resistance to abrasion, heat, moisture, oil, and gasoline
• Blue jacket color for circuit identification in conduit wiring systems
• Maximum operating temperature of 194 degrees F

Compatibility

Designed as a standard THHN/THWN replacement or new-installation wire for use in conduit, raceways, and approved cable trays in residential, commercial, and industrial electrical systems where 8 AWG copper conductors are specified.

Installation Notes

Installation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. De-energize and lock out the circuit before making any connections. Use appropriate wire-pulling lubricant when routing through conduit to avoid jacket damage. Verify conduit fill calculations per NEC Article 358 or applicable raceway article before pulling multiple conductors.