The Cooper Wiring Device WD1252 50-Amp 125-Volt Surface Mount Power Receptacle has a heavy duty design and construction that is ideal for any high amperage industrial and commercial power connectivity application. This surface receptacle features heavy gauged galvanized steel mounting strap and a glass reinforced nylon body. This heavy-duty non-grounding application has 2-Pole/3-Wire features and a NEMA standard of 6-50R with 125/250-Voltage. This surface receptacle has a patented lay-in terminal that allows it to except wire up to #4 on the American Wire Gauge (AWG). Its back features concentric knockouts and an adjustable cord clamp to allow wiring from the back and bottom to fit your convenience. It is to be used with aluminum or copper wire. Cooper Wiring Devices is a trusted name in electrical products. Cooper Wiring Devices is committed to providing products that increase productivity, energy efficiency, safety at work and in the home, and produce reliable performance. Whether a home-Feets style is traditional, modern, casual, cozy or rustic, it will demand more from wiring devices than in years past. Cooper Wiring Devices is dedicated to providing the up-to-date wiring device solutions that today-Feets homes need..