In electrical installations, what is a typical use for a GFI?

A Ground Fault Interrupter (GFI), also known as a Ground Fault Circuit Interrupter (GFCI), is specifically designed to protect against ground faults. A ground fault occurs when there is an unintended connection between a live conductor and the ground, which can lead to electric shock or fire hazards. The primary function of a GFI is to monitor the electrical current flowing through the circuit. If it detects any imbalance, indicating a leakage of current to the ground, it will quickly cut off the power to prevent injury or damage.

This protection is particularly crucial in areas where moisture is present, such as kitchens, bathrooms, and outdoor outlets, where the risk of electric shock is higher. While other devices may serve purposes like overcurrent protection or monitoring energy use, the distinctive feature of a GFI is its ability to detect and interrupt ground faults to safeguard both people and property from danger.