This AC WORKS brand inlet wiring device [ASIN615P-WC] is a heavy-duty power input connection device. It is used for an industrial and commercial grade flange inlet. This inlet works with 14 to 12 AWG (American Wire Gauge) copper wire and is commonly used for boats, RVs, small trailers or cabins. The product features a 15 Amp 250 Volt power input connection [NEMA 6-15P] and is a straight blade flange inlet. It has a 2-pole, 3-wire grounding system with a nylon casing and is back wired. Included with purchase is a 1-year limited warranty.