Locking Connector Connection Orientation Straight Current Rating 20 A Housing Color Black White Housing Material Nylon IP Rating IP20 NEMA Receptacle Configuration L21-20R Number of Poles 4 Number of Wires 5 Phase Three Resistance Properties Impact Resistant Shrouded No Voltage Rating 120/208V AC Wire Connection Type Spring Clamp Terminals Wiring Style Standard Cap Type No Cap or Cover Contact Material Brass Face Diameter 2.21 in For Maximum Cable Diameter 1.15 in