Locking Receptacle, Current Rating 30 A, Housing Color White, IP Rating IP20, NEMA Plug Configuration L21-30P, Number of Blades 5, Number of Poles 4, Phase Three, Voltage Rating 120/208V AC, Face Diameter 2.23 in, Flange Diameter 2.686 in, Flange Type Flanged, Grounding Grounded, Horsepower Rating 3 hp, Housing Material Nylon, Maximum Wire Size 8 AWG, Minimum Wire Size 14 AWG