Home Electrical Wiring 240 Volt. Saved by Ryan McCarthy. A 240-volt 3-wire receptacle has three prongs two hot and one ground to accept a 3-prong plug.
Guide to 120240 Volt Wiring for a Dryer Circuit. New electric ranges and clothes dryers require circuits that provide 120 volts and 240 volts at the receptacle. Typically a 240 volt heater will have three wires in a junction box or connection area.
Saved by Ryan McCarthy.
The circuit size is determined by the required electrical load of the heater which is measured in watts or amps. How to wire 240 volt outlets and plugs. 240 volt cable is very important in residential homes for powering heating and cooling devices as well as appliances that consumes more energy. In the UK and Europe we use a higher voltage than other parts of the world such as in the USA 110V.