What does a GFCI outlet do?

A GFCI outlet, or Ground Fault Circuit Interrupter outlet, is specifically designed to protect people from electric shock by monitoring the flow of electricity in a circuit. It detects any imbalances between the incoming and outgoing current, which can occur if there is a ground fault—such as when a person accidentally comes into contact with water while using an electrical device. If the GFCI senses a discrepancy in the electrical flow, indicating that some of the current is escaping to the ground (which can be a pathway through a person), it will quickly cut off the power to prevent serious injury or death.

This protective feature is particularly important in areas where water and electricity may come into contact, such as bathrooms, kitchens, and outdoor locations. Understanding the role of GFCI outlets is crucial for ensuring safety in electrical installations and compliance with building codes that mandate their use in certain locations.