Questions tagged [250v]

If such a receptacle exists, what is the (US) NEMA designation for a 250V receptacle with a terminal on the back for hot#1, and one for hot#2, a ground terminal, and also a place to attach neutral, where the receptacle is prong-compatible with an…

i have an old 6-20 250volt receptacle (pictured above) in the wall of my house ...is there an adaptor which will allow me to plug in a simple 15amp 120v plug into the receptacle? thank you for your time.