240 volts is a higher degree of current for the appliances that need a higher level of pressure. Some of the common devices that require a 240-volt outlet and plug are the washing machine, stove, and dryer. They can’t run effectively on a 120-volt outlet. On the other hand, your everyday devices such as vacuum cleaners and phone chargers can easily run on a 120-volt outlet. Therefore, these are the most common types of outlets in your home.