What is the primary purpose of ground circuit interrupters?

Ground circuit interrupters, more commonly known as ground fault circuit interrupters (GFCIs), are specifically designed to prevent electric shock. These devices monitor the flow of electricity in a circuit and can detect imbalances between the outgoing and incoming current. If a difference is detected—indicating that some of the current is leaking to the ground, potentially through a person—they quickly cut off the electrical supply.

This rapid response can significantly reduce the risk of severe injury or death from electric shock, particularly in environments where water is present, such as bathrooms, kitchens, and outdoor settings. The ability of GFCIs to provide protection in these high-risk areas underscores their primary purpose of safeguarding individuals from electrical hazards.