What is a GFCI and where is it typically used?

A Ground Fault Circuit Interrupter (GFCI) is a safety device designed to protect people from electrical shock by quickly cutting off the electrical supply when it detects an imbalance between the outgoing and incoming electrical current. This imbalance may indicate that electricity is flowing through an unintended path, such as through water or a person, which could lead to severe injury or fatality.

GFCIs are typically found in high-risk areas where there is an increased likelihood of electrical shock, such as bathrooms, kitchens, outdoor circuits, and unfinished basements. Their installation is crucial for ensuring safety in environments where water and electricity may come into contact, significantly reducing the risk of electric shock.

Understanding the role of GFCIs is essential for anyone working in electrical fields, as they are a fundamental part of modern electrical safety protocols.