The standard voltage for appliances in the United States is 120V, while the rest of the world tends to use 220V or 240V. Appliances stateside that use more power might be rated for these higher figures. Match voltage ratings to your connections – otherwise, you'll face degradation of performance or possible damages.

In some cases, you may have a device with a split connection, such as 120/240V. An example of this is when the 120V connection would power the clock and lights on a range, but the 240V connection would power the heating elements. Most electricians are used to this and can get you up and running in no time.