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What is the fifth wire in a 5 wire 220 circuit?
Three phases, one neutral and a GROUND
What gauge wire for 220 volts?
You need to know the amperage to size the wire. For 220 V at 20 A you would need 12 AWG. At 220 V at 30 A 10 AWG.
Can 14 gauge wire carry 220 volt?
Wire guage is used as a measurement for the ampacity of the wire. # 14 wire is allowed 15 amp to be applied to it. Voltage is governed by the insulation factor of the wire. The three standard insulations are for 300V, 600V and 1000 volts.
Can you run 14 gauge wire off 12 gauge 20 amp breaker?
You could if it fit properly in the connector, but it would be massive overkill since you only need 12 AWG wire. You also have to make sure the load can physically accommodate that larger size wire. Every so often someone will replace an electric cooktop witha gas one. All of the new gas cooktops require a 110v outlet. The old electric cooktop may have been run with a 50 amp breaker (and probably 6 gauge wire) In order to convert this 220 v circuit to a 110v circuit we change to a 20amp breaker. Depending upon the brand of breaker sometimes the wire will fit into it. If not, we splice on a short piece of 12 gauge wire and then connect to the breaker.
Can you install a dryer outlet using the bare copper as a neutral wire in an older house?
Technically, yes you can. However, this is one of the most dangerous things you can do in electrical wiring. It's not only against the code, it's a fire waiting to happen. Don't do it! Understand, the neutral wire is a conductor. It carries current. It needs to be an insulated wire. Also, if you use the bare copper (ground) wire for a neutral, you have taken away the earth ground from the circuit, eliminating short circuit protection. If the dryer motor shorts out it will burn up. (fire again) A residential dryer requires a 30 amp 220 volt circuit breaker in your panel and a # 10 gauge wire with three conductors (insulated) and a bare ground. Have a qualified electrician install it.
