The answer to 'how does surge protector work' is that a surge protector is an electrical device that is designed to protect electronic equipment from voltage spikes or surges in the electrical current. It works by diverting excess voltage away from the connected devices and into the ground, preventing damage to sensitive electronics like computers, TVs, and appliances.
Surge protectors contain metal oxide varistors (MOVs) that act like voltage-controlled switches. When the voltage rises above a certain threshold, the MOVs allow the excess current to flow to the ground, preventing it from reaching the connected devices. This helps safeguard your electronics from power spikes caused by lightning strikes, electrical grid issues, or other sources of sudden voltage fluctuations.