What are GFCI outlets used for?

GFCI outlets, also known as Ground Fault Circuit Interrupter outlets, are primarily designed to protect against electrical shock. They are especially important in areas where water and electricity may come into contact, such as kitchens, bathrooms, and outdoor spaces. A GFCI outlet monitors the electrical current flowing through the circuit and can quickly shut off power if it detects an imbalance, which may indicate that electricity is flowing through an unintended source, such as a person who is getting shocked.

This safety mechanism is crucial because it helps to prevent severe injuries or fatalities caused by electric shock. GFCI outlets thus play a significant role in enhancing the safety of the electrical systems in residential settings. Other options, such as enhancing electrical flow or increasing voltage, pertain to different functions unrelated to the primary purpose of a GFCI outlet, while power backup systems are typically provided by uninterruptible power supplies (UPS) or generators.