Quality: Proven High-Quality build over years of testing, customer records and reviews the impact resistant, thermoplastic body protects the black dyer outlet from wear over time in all applications NEMA 14-50R: assures compatibility with (EV) Electric Vehicles (please see your manufacturer's manual for compatibility) as well as electrical dryers, RV's, Ranges, welders and a broad range of other applications. Fits all 1-gang wallplates. We highly recommend the installation of this dryer outlet with a 2 gang wall plate to make the installation process easier with more space. Specifications: 50 Amp, 250 Volt, UL Listed, Environmental UL94 Flammability, V2 Rating, Industrial Grade, Straight Blade, Grounding, Zinc-Plated Steel Strap for corrosion resistance and a Black Outlet made of Heavy Duty Thermo-Plastic material Wiring: Only accepts 10, 8, 6, and 4 gauge Copper Wires (AWG), Neutral wire is required and can be applicable to 250V applications and up to 50 Amps Easy ins