Surges are brief overvoltage spikes or disturbances of a power waveform that can damage electronics.
Most electronics are designed to handle small variations in voltage and disturbances in the power
waveform. Rarely, power surges can reach amplitudes high enough to damage equipment.
- Surges are most often caused by lightning strikes.
- Surges can sometimes be caused by internal sources, like HVAC systems, large motors and
compressors, welders, or problems with equipment connected to your service. - Very rarely, damage to utility equipment may also cause surges.