Locking Connector Connection Orientation Straight Current Rating 20 A Housing Color Black White Housing Material Nylon IP Rating IP20 NEMA Receptacle Configuration L22-20R Number of Poles 4 Number of Wires 4 Phase Three Resistance Properties Impact Resistant Shrouded No Voltage Rating 277/480V AC Wire Connection Type Spring Clamp Terminals Wiring Style Standard Cap Type No Cap or Cover For Maximum Cable Diameter 1.15 in For Minimum Cable Diameter 0.35 in