How to Wire a 220 Volt 20 Amp Outlet | Hunker If you need to install a 20-amp, 220-volt outlet, which is equivalent to a 230-, 240- or 250-volt outlet, you need to be familiar with 220-volt wiring. It differs from 110-volt wiring by requiring an extra hot wire that must be connected to a separate circuit breaker coupled to the breaker controlling the other hot wire. wiring diagram 20 amp 240 volt circuit | Electrical wiring diagram 20 amp 240 volt circuit More . Saved from do-it-yourself-help. Discover ideas about Electrical Diagram. Wiring diagram 20 amp 240 volt circuit â ¦ . Wiring diagram 20 amp 240 volt circuit MoreWiring to install a 220 Volt 4 wire outlet Four wire 220 How to install a 220 volt outlet - AskmeDIY Learn how to install a 220 volt outlet with video and full article with pictures. Learn how to install a 220 volt outlet with video and full article with pictures. But for now, this pretty much covers a simple 15 or 20 amp 220 volts. The wiring needed for this type of insulation you would use 12/2 wire for a 20 amp How to Wire a 220 Outlet (with Pictures) - wikiHow How to Wire a 220 Outlet. While most outlets transfer 120 volts, Wiring a new 220 outlet is a project that someone who has experience working with electricity can do safely by working carefully and following the proper precautions. 30 amp cable to a three-wire 220 volt, 30 amp outlet? Community Answer.