What safety feature does a Ground Fault Circuit Interrupter (GFCI) provide?

A Ground Fault Circuit Interrupter (GFCI) is specifically designed to enhance safety in electrical systems by monitoring the current flowing in a circuit. When it detects an imbalance, which indicates that current is leaking from the circuit—potentially through a person who is grounded—the GFCI quickly interrupts the electrical flow. This rapid response can prevent severe electric shock, which is particularly important in areas where water is present, such as kitchens and bathrooms.

The primary purpose of a GFCI is to protect individuals from electric shocks, making it a vital safety feature in residential and commercial buildings where the risk of ground faults is elevated. This functionality is essential for human safety and is a key reason for the device's widespread use in modern electrical installations.