Which type of device is primarily protected by a GFCI?

A Ground Fault Circuit Interrupter (GFCI) is designed to protect against electrical shock by monitoring the current flow in a circuit. If it detects an imbalance between the outgoing and incoming current, typically caused by a person receiving an electric shock, the GFCI will quickly disconnect the power.

Outdoor electrical equipment is particularly at risk due to exposure to moisture and the possibility of ground faults, making GFCI protection essential in reducing the risk of electrical shock. This is highlighted by regulations that often require GFCIs to be installed in outdoor areas where water might be present, as well as in wet locations like bathrooms and kitchens.

Other types of devices, like high voltage appliances, low voltage light fixtures, and smart home devices, while they may require various forms of protection, are not as critically governed by the need for GFCI protection specifically. High voltage appliances can have their own safety requirements, and low voltage light fixtures do not typically provide a significant electrocution hazard, especially in dry locations. Smart home devices may be designed to be safe in normal operation without immediate coverage by GFCI protections, depending on their installation and usage context.