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 Screw Terminals Wiring Style Standard Cap Type No Cap or Cover Contact Material Brass For Maximum Cable Diameter 1.15 in For Minimum Cable Diameter 0.35 in