Attributes . Locking Device Plug, 20 A, 480 V ac, 3 Poles, 4 Wires, Black/White, Nickel Plated (Terminal Clamp, Assembly Screw), -40 °C Operating Temperature, +75 °C Operating Temperature, Screw/Clamp Terminal, 2.21 in Diameter, Cord Mounted, 2.75 in Length, #16 to #8 AWG (Stranded Copper) Wire Size, Chemical Resistant, 0.25 lb . Names