Which safety device is typically used to prevent shock?

The Ground Fault Circuit Interrupter (GFCI) is specifically designed to prevent electrical shock by monitoring the flow of electricity in a circuit. If it detects an imbalance between the incoming and outgoing current, which can occur when electricity is leaking through a person who is grounded, it quickly cuts off the power. This rapid disconnection can significantly reduce the risk of serious injury or death due to electric shock.

The GFCI is particularly effective in wet or damp environments where the risk of electric shock is higher, making it a crucial safety device in locations such as bathrooms, kitchens, and outdoor outlets. Its ability to provide real-time protection against ground faults distinguishes it from other devices that may serve different functions in electrical safety and circuit protection.