Southwire 500 ft. 12/1 Solid THHN Building WireSouthwires 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. Southwires THHN is rated for 600 volt and has a heat capacity of up to 90 degree Celsius. UPC: 032886892783 Manufacturer Part No: 11592358 Brand Name: Southwire Wire Length: 500 ft. Gauge Conductors: 12 1 Stranded or