Copper THHN/THWN Insulated Singles. Green Insulated Copper Grounding Conductor. UL Listed. 600 Volts Rated VW-1. Lightweight Aluminum Interlocked Armor. Branch and service power distribution in commercial, industrial, institutional, and multi-residential buildings. Class I Div. 2, Class II Div 2, & Class III Div. 1 Hazardous Locations.Type THHN/THWN is rated 90ºC Dry.