A whole-house surge protector is a device installed at the main electrical panel of a home. Its primary function is to protect all electrical appliances and devices from voltage spikes, which can occur due to lightning strikes, power outages, or other electrical disturbances. By diverting excess voltage away from the home's wiring, it helps prevent damage to sensitive electronics. These surge protectors work in conjunction with individual surge protectors that may be used for specific devices, such as computers or televisions. Installing a whole-house surge protector provides an added layer of security, ensuring that all areas of the home, including outlets and hardwired systems, are safeguarded against surges.