Stand-alone GFCIs are sometimes used in which setting?

Stand-alone Ground Fault Circuit Interrupters (GFCIs) are commonly used in settings where there is a higher risk of electrical shock due to the proximity of water. This makes swimming pools an ideal environment for their use. GFCIs are designed to protect individuals from electrical shock by quickly disconnecting power when they detect a ground fault. In swimming pool areas, where water can come into contact with electrical systems and equipment, the use of stand-alone GFCIs provides an essential safety measure.

While GFCIs can also be found in residential homes, commercial offices, and potentially outdoor spaces like parking lots, the specific application in swimming pools highlights the crucial need for protection against water-related electrical hazards, making it the most appropriate setting for stand-alone GFCIs.