When there are problems, the voltage increases up to 170 volts putting your devices at the risk of getting damaged. Voltage spikes are brought about by many factors including: tripped circuit breakers, lightening strikes, downed power lines, malfunctions at the power company, and on/off cycles of large appliances and tools.
How the surge protector works The protectors have a simple working formula-they short-circuit power surges and redirect them to the electrical ground. The devices have the capability of working up to 200 volts.