THHN / THWN-2 is the workhorse of North American building wire: a bare annealed copper conductor, heat- and moisture-resistant PVC insulation and a tough nylon jacket, rated 600 V and 90 °C in dry locations.

Key features

• Bare annealed copper conductor — solid from 14 AWG, stranded up to 750 kcmil
• PVC insulation with a tough nylon jacket
• Heat, moisture, oil and gasoline resistant
• 600 V rated; 90 °C dry / 75 °C wet
• Suitable for conduit, machine tools, control circuits and appliance wiring
• Available in standard colours, supplied on 500 ft wooden spools

Application scope

• Branch circuits and feeders in conduit
• Machine tool and control panel wiring
• Appliance and equipment connections
• Commercial and industrial building wiring

Supply & support

Manufactured by our partner mill — a large-scale Chinese cable factory with more than 70 years of manufacturing history. Contact us for datasheets, third-party test reports and pricing.