What Causes A Sudden Surge Of Electricity When Certain Small?

Power surges occur when something boosts the electrical charge at some point in the power lines. The most common cause of surges is when lightning strikes near a power line, whether it's underground, in a building or running along poles, the electrical energy can boost electrical pressure by millions of volts. Other sources of power surges include faulty wiring, problems with the utility company's equipment, and downed power lines.