Locking Plug, Connection Orientation Straight, Current Rating 20 A, Housing Color Black, White, Housing Material Nylon, NEMA Plug Configuration L15-20P, Number of Blades 4, Number of Poles 3, Phase Three, Polarized Yes, Resistance Properties Chemical Resistant, Impact Resistant, UV/Sunlight Resistant, Voltage Rating 250V AC, Wire Connection Type Screw Terminals, Wiring Style Standard, Face Diameter 1.97 in, For Maximum Cable Diameter 0.775 in, For Minimum Cable Diameter 0.56 in