What does a GFCI outlet protect against?

A GFCI outlet, or Ground Fault Circuit Interrupter, is specifically designed to protect against electrical shock. It does this by continuously monitoring the current flowing in the circuit. If it detects an imbalance between the incoming and outgoing current, which might occur if electricity is accidentally flowing through a person to the ground (a ground fault), the GFCI quickly cuts off the power. This rapid response can significantly reduce the risk of serious injury or death from electric shock, particularly in environments where moisture is present, such as bathrooms or kitchens.

Understanding the function of GFCI outlets is crucial for safety in electrical installations, especially in areas where there is a higher risk of encountering ground faults. The other options address different aspects of electrical safety or equipment protection but do not relate to the primary function of a GFCI outlet, which is primarily to ensure personal safety from electric shock.