What is the function of a Ground Fault Circuit Interrupter (GFCI)?

A Ground Fault Circuit Interrupter (GFCI) is specifically designed to prevent electrocution. It does this by monitoring the amount of electrical current flowing through a circuit. If it detects an imbalance, such as when current is flowing through an unintended path (like a person who may be grounded), it quickly disconnects the power, significantly reducing the risk of serious injury or death from electric shock.

This protective function is critical in environments where water is present, such as kitchens and bathrooms, where the risk of electrocution is higher. The GFCI serves as a crucial safety device in electrical systems, ensuring that users are protected from potentially lethal electrical faults.

Other options, such as increasing electrical output, protecting against overloading, or amplifying voltage, do not accurately reflect the primary purpose of a GFCI. Instead, these functions pertain to other electrical components and devices rather than the safety-oriented design and operation of a GFCI.