However, the delivery of electricity doesn't always occur smoothly.
Electrical surges can briefly disrupt the electricity supply.
Sometimes those surges are caused by severe external events, such as lightning or a power outage. Most surges, however, are caused by disturbances inside your home. About 60 percent of surges are caused by routine operations, such as washing machines and dishwashers switching through their normal cycles. These low-level disturbances are so brief you probably don't notice them, but over time they can shorten the life of your equipment. Given the value of appliances and other electrical equipment in your home, it's a good investment to protect that equipment with surge suppressors.