Watertight Locking Plug Connection Orientation Straight Current Rating 30 A Housing Color Black White Housing Material Polybutylene Terephthalate NEMA Plug Configuration L17-30P Number of Blades 4 Number of Poles 3 Phase Three Polarized Yes Resistance Properties Chemical Resistant Impact Resistant Watertight Voltage Rating 600V AC Wire Connection Type Screw Terminals Wiring Style Standard Face Diameter 2.77 in For Maximum Cable Diameter 1.15 in