How do you rewire a 120v outlet to 240v?

Answer 1

In a 4 wire, 220v AC circuit, each black wire carries 110v, the white serves as the return, or negative, and the copper is the ground.

So connect the white to the negative post of whatever your using (light or switch), and one of the black wires to the other for a 110V circuit.

If you're connecting a 110v two- strand wire to a 220v outlet, connect one wire to a black post and the other to the white post.

Make sure you have a neutral. Some times the white wire is the second hot and there is no neutral.

Answer 2

It is not safe or recommended to rewire a 120V outlet to 240V. This can pose serious safety hazards, damage appliances, and potentially cause fires. To use a 240V appliance, you should install a new dedicated 240V outlet and circuit with the appropriate wiring and breaker size.

Answer 3

Whatever you are thinking of doing it is probably illegal. You can't hook a 110V outlet off a 220V supply as it is very dangerous. The best advice anyone should give you is ask a licensed electrician for advice. : IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB

SAFELY AND COMPETENTLY

REFER THIS WORK TO QUALIFIED PROFESSIONALS. If you do this work yourself, always turn off the power

at the breaker box/fuse panel BEFORE you attempt to do any work AND

always use an electrician's test meter having metal-tipped probes

(not a simple proximity voltage indicator)

to insure the circuit is, in fact, de-energized.

Answer 4

You can't do this unless ithe device was purposely designed to work on either of those voltages - either with a voltage-change switch or not - or on any voltage within a range of voltages, such as from 110 Volts to 240 Volts.

Some appliances, such as electric shavers, etc., have been designed to run safely on different supply voltages. If that is the case the appliance's rating plate will state the range of suitable voltages.

In many cases where the power needed is low, such as (say) less than 30 Watts, a cheap and simple "International Travel Adapter" is all that is needed to make it work. But bear in mind that the mains frequency in Europe and other 230 Volt areas is 50 Hz (Cycles per second) compared to 60 Hz in US, Canada and other 120 Volt areas. Some 60 Hz appliances will work fine but others with simple motors will run too slow on the lower frequency of 50 Hz. It is not possible to use a standard kind of International Travel Adapter for high-powered appliances such as electric kettles because the current they take is much too high. 120 Volt appliances having powers from (say) 100 Watts to 2000 Watts (2kW), or more, would need an expensive item called a "Transformer" or "Auto-transformer" to enable them to be used on a 240 Volt supply. Such Transformers are much bigger and heavier than an International Travel Adapter and much more expensive - they can cost from US$100 upwards, even second-hand, depending on the power to be converted. So most folks would buy an appliance designed to work on 240 Volts.

For more information see the answers to the Related Questions shown below.

Answer 5

You can operate 220-240 volt equipment from standard 110-120 volt outlets with quick220 divices.

See related links below.

Answer 6

You don't. Electric devices like outlets have voltage and current ratings that should not be exceeded. Also, the 240V would have to be run from the main panel and may require a different size wire depending on the current required.