What is the main purpose of using Ground Fault Circuit Interrupters (GFCI)?

The primary purpose of using Ground Fault Circuit Interrupters (GFCI) is to protect people from electric shock. GFCIs are designed to detect imbalances in electrical current, which can occur when electricity flows through an unintended path, such as through a person's body. When a GFCI detects this condition, it quickly interrupts the circuit, reducing the risk of severe injury or death due to electric shock.

GFCIs are commonly used in areas where water is present, such as kitchens, bathrooms, and outdoor outlets, because wet conditions significantly increase the likelihood of electric shock. By providing this protection, GFCIs ensure that the risk of injury is minimized in potentially hazardous environments, aligning with the safety protocols in electrical installations.

While preventing electrical fires is an important aspect of circuit safety and involves different devices such as circuit breakers and fuses, GFCIs specifically focus on human safety from electric shocks rather than directly addressing fire risks. Regulating voltage levels and maintaining appliance efficiency are also important considerations in electrical systems, but they do not relate to the core function of GFCIs.