It is? Let's differentiate between fuels sources of the appliance and location in the US. Here in the North East, many fixed appliances (Hot Water Tank, Dryer, Furnace, Stove) use natural gas. The electrical requirement for these appliances would be 120 volts not 240 volts. Thus, the outlets these appliances would be plugged into would be 120 volts. Also, in the garages of these homes, outlets would also be 120 volts not 240 volts outlets.
Thus it depends.
Perhaps you should have taken this into account before posting. You would have looked less of an ass if you did.