Leviton 5478-CWP 20 Amp, 250 Volt, Power Inlet Receptacle, Straight Blade, Industrial Grade, Grounding, Gray Super Tough Nylon Body Resists Damage From Severe Impact, Abrasion and Chemicals NEMA and Non-NEMA Configurations Available Positive Crimp Lock Wire Clamps Available in 15, 20, and 30 Amp Configurations Stainless Steel external hardware resists corrosive effects of moisture