Watertight Locking Plug Connection Orientation Straight Current Rating 20 A Housing Color White Housing Material Polybutylene Terephthalate NEMA Plug Configuration L16-20P Number of Blades 4 Number of Poles 3 Phase Three Polarized Yes Resistance Properties Chemical Resistant Impact Resistant Watertight Voltage Rating 480V AC Wire Connection Type Screw Terminals Wiring Style Standard Face Diameter 2.77 in For Maximum Cable Diameter 1.15 in For Minimum Cable Diameter 0.35 in