![]() Increasing voltage above an appliance's normal operating voltage can cause an arc of electrical current within the appliance, and the heat generated in the arc can cause damage to the electronic circuit boards and other electrical components. Most appliances and electronics used in the United States are designed to be powered by this form of generated electricity.īut during a power surge, the voltage exceeds the peak voltage of 169 volts.Ī spike in voltage can be harmful to appliances and electrical devices in your home. ![]() The voltage oscillates from 0 to a peak voltage of 169 volts. With alternating current, the voltage rises and falls in a predetermined rhythm. ![]() ![]() However, the voltage is not delivered at a constant 120 volts. In the United States, most homes use electrical power in the form of 120 volt, 60 hertz, single phase, alternating current. Learning more about surges can help save money and how to protect your property. But when you try to switch on the TV, it doesn't seem to work.Įlectrical surges can instantly overload and short out the circuitry of home electronics and anything else plugged into the wall, or they can degrade them over time. The power cuts out for a moment, then returns. Maybe you know this story: There's a thunderstorm.
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