Description: Sudden increase in voltage within the electrical system due to lightning strikes. Some common effects on the electrical system: service entry, electrical meter, electric panel, circuit breakers, fuses, wiring, grounding, individual electrical circuits, and appliances or other electrical equipment in the home are listed here. First, through direct strikes that damage any system they contact. These overvoltages can exceed the insulation capabilities of the equipment, leading to insulation breakdown, flashovers, and insulation damage. The focus of this article is impulsive transient overvoltages. Power surges account for approximately 50% of lightning-related damage, resulting in malfunctioning devices and costly repairs.