Southwire 37105471 XHHW Building Wire, Copper, 12 AWG, 1 Conductor, Stranded, Yellow, 500 ft, 600V, Spool 226 CXO 444A57 000 psi Housing Material Steel 000 psi Housing Material Steel Connection Type NPT Cylinder Compatibility Single Acting Handle Effort Maximum 77 lb Type Manual 320 A (at 40°C for 1 min Power Circuit) which provides increased heat and moisture resistance over other types of building wire Trade Designation XHHW Conductor Material Copper Conductor Size 12 AWG Number of Conductors 1 Conductor Design Stranded Conductor Insulation Color Yellow Voltage 600 V Overall Length 500 ft Standards UL Listed Country of Origin United States