The answer to 'what is GFCI outlet' is a type of electrical outlet that is designed to protect people from electrical shocks. GFCI stands for Ground Fault Circuit Interrupter, and it is a safety device that quickly cuts off power to an outlet if it detects an imbalance in the electrical current, which can happen if someone comes into contact with a live electrical wire.
GFCI outlets are commonly found in areas where water is present, such as bathrooms, kitchens, laundry rooms, and outdoor areas, as water can increase the risk of electrical shock. They are an important safety feature that can help prevent serious injuries or even death from electrical accidents.