What Does Power Surge Mean?
A power surge is a fast yet short duration of electrical transients in current, voltage or transferred energy that happens in an electrical circuit.Typically a power surge is caused by an oversupply in voltage either from the power company or from various external sources, although an oversupply of current is also possible; either way it affects the overall power moving through the electrical lines, hence the term power surge.
Techopedia Explains Power Surge
A power surge is a phenomenon that results when something causes a boost in the overall electrical charge at some point in power lines. This event increases the electrical potential energy in the lines and causes more power to be discharged from the wall socket and into appliances or a load. The most well-known cause of power surges is electrical storms. When lightning strikes near power lines, even if there is no direct contact, the rapid ionization of the air and the sheer amount of energy in the lightning are enough to induce additional potential energy in the lines, causing a power surge. The best way to prevent appliances from being damaged by power surges caused by lightning is to unplug them during lightning storms.
