What is the primary function of a GFCI outlet?

The primary function of a GFCI (Ground Fault Circuit Interrupter) outlet is to prevent electrical shock hazards. GFCI outlets are designed to detect imbalances in the electrical current in a circuit, specifically when there is a difference in the incoming and outgoing current. This can occur when electricity is diverted through an unintended path, such as through water or a person’s body. By monitoring these imbalances and quickly shutting off the power to the outlet (usually within milliseconds), GFCI outlets significantly reduce the risk of electrical shock, especially in areas where water is present, such as kitchens and bathrooms.

Understanding this functionality is critical for ensuring safety in electrical installations, particularly in residential and commercial settings where the risk of shock is heightened.