Can you wire a 220 volt appliance on a 220 volt circuit using 110 romex?

Answer 1

First understand rolmex is not rated by voltage, there is no 110 V only rolmex. You might be referring to rolmex that has only two conductors (black & white) and a bare ground wire. Most 220 V "appliances" require two hot wires, a neutral and a ground. Check the hook up on your appliance. If it does require a neutral, then you need three conductor with ground wire. The important thing here is that you use the right size or gauge wire. The wire must be able to carry the appliances required amperage.

Again, check the wiring hook up on your appliance and then check the amperage required. Then go to the hardware store, etc. and buy the correct size (gauge), and number of conductors in the wire. Tell the clerk in the electrical dept. exactly what your supplying power to and they'll likely get you the right wire.