Product Description Leviton Electrical Receptacle, 3 Poles, 4 Wires, 4 AWG Wire, 50 A, 125/250 VAC, Nema 14-50R, Surface Mounting, Grounding Grounding, 2000 VAC Dielectric Strength, 4.82 in Overall Length, 2.68 in Overall Width, 2.04 in Overall Depth, Thermoplastic, Black, -40 TO 60 deg C, UL 498 E13399, CSA C22.2 No. 42 52105, ANSI C-73, NOM 057, 3 hp From the Manufacturer Built of durable thermoplastic, Leviton Power Receptacles — come equipped with heavy-gauge, double-wire copper alloy contacts. To ensure correct and speedy wiring, terminals have ID markings. 50 Amp, 125/250 Volt, NEMA 14-50R, 3P, 4W, Surface Mounting Receptacle, Straight Blade, Industrial Grade, Grounding, Side Wired, Steel Strap, Black.