S. household wiring design has two 120 volt "hot" wires and a neutral which is at ground potential. The two 120 volt wires are obtained by grounding the centertap of the transformer supplying the house so that when one hot wire is swinging positive with respect to ground, the other is swinging negative.Is 120 volt a regular outlet in your home?
The 120-volt power outlet is the standard electrical outlet in use in homes in North America. These outlets have been in use in their present form since the early 1950s.What color is the hot wire in a 120 volt circuit?
In practice, hot wires are either black or red in a 120- or 240-volt residential electric circuit. Black is the default color, and the wires in a 2-conductor cable with a ground wire are white and black.What kind of wiring for a 220 volt?
All 220-volt wiring is to a dedicated circuit breaker, which means you can't tie into another circuit. At the panel, the two hot wires should be connected to a double-pole, 20-amp circuit breaker, and the neutral wire should be connected to the neutral bus.