what voltage does appliances in the usa use
Consider the voltage. The second consideration is voltage, or the pressure under which current flows through an electrical system. While most U.S. appliances work at 110 volts, many foreign power companies generate electricity at 220 volts. Some appliances have a toggle switch that allows them to work with both voltages, but for non-dual voltage appliances, you'll need a converter to step down the 220 electric current to 110 so your appliances won't burn out.