Attributes . Locking Device Plug, 50 A, 480 V ac, 3 Poles, 4 Wires, Black/White, -40 °C Operating Temperature, +75 °C Operating Temperature, Screw Terminal, 2.563 in Diameter, Cord Mounted, 6.375 in Length, #8 to #4 AWG (Stranded Copper) Wire Size, Impact and Heat Resistant, 1.25 lb . Names