Ground Continuity Monitoring Plug, Current Rating 20 A, Housing Color Black, White, Housing Material Nylon, NEMA Plug Configuration L14-20P, Number of Blades 4, Number of Poles 3, Phase Single, Resistance Properties , Impact , Voltage Rating 125/250V AC, Wire Connection Type Screw Terminals, Wiring Style Standard, Face Diameter 1.358 in, For Maximum Cable Diameter 1.15 in, For Minimum Cable Diameter 0.225 in, Grade Federal Specification, Grounding Grounded