How Does a Power Surge Cause Damage?
In the United States, most homes use electrical power in the form of 120-volt, 60 Hz, single phase, alternating current. However, the voltage is not delivered at a constant 120-volts. With alternating current the voltage rises and falls in a predetermined rhythm. The voltage oscillates from 0 to a peak voltage of 169 volts. Most appliances and electronics used in the United States are designed to be powered by this form of generated electricity. During a power surge, the voltage exceeds the peak voltage of 169 volts. A spike in voltage can be harmful to appliances and electrical devices in your home. An increase in voltage above an appliance’s normal operating voltage can cause an arc of electrical current within the appliance. The heat generated in the arc causes damage to the electronic circuit boards and other electrical components. Smaller, repeated power surges may slowly damage your electronic equipment. Your computer or stereo may continue to function after small surges occur un
