Ground Fault Circuit Interrupters (GFCIs) are safety devices designed to protect people from electric shock. They work by monitoring the flow of electricity in a circuit and quickly shutting off power if they detect an imbalance, which can occur when electricity escapes to the ground. GFCIs are commonly installed in areas where water is present, such as bathrooms, kitchens, and outdoor spaces. These devices are essential for preventing electrical accidents, especially in wet environments. GFCIs can be found in the form of wall outlets or circuit breakers. Regular testing of GFCIs is recommended to ensure they function properly and provide the necessary protection against electrical hazards.