Southwire 500 ft. 12 Orange Stranded CU THHN WireSouthwire's THHN and THWN is a multi purpose building wire used in conduit and cable trays for service, feeders and branch circuits in commercial and industrial applications. It is also used as a conductor in NM B, UF B, SER, SEU and MC. Southwire's THHN is rated for 600 Volt and has a heat capacity of up to 90C. #12 AWG commercial wiring for outlets, switches and other loads 12 Gauge THHN wire contains Copper (CU) Conductors #12 THHN comes stranded