What does a Ground Fault Circuit Interrupter (GFCI) do?

A Ground Fault Circuit Interrupter (GFCI) serves a critical safety function by monitoring the current flowing through a circuit. It is designed to detect imbalances between the outgoing and incoming current. When it senses that current is leaking, potentially through a person who might be in contact with a live electrical source, it quickly cuts off the power to prevent electric shock. In essence, it diverts the stray current to the ground, effectively safeguarding individuals from accidental electrocution, particularly in wet or damp environments where the risk is heightened.

This safety mechanism is especially important in areas such as kitchens, bathrooms, and outdoor settings, where the likelihood of water presence increases the risk of electric shock. The swift action of the GFCI ensures that any dangerous situations are mitigated promptly, thereby enhancing electrical safety for users.