For permanently installed pools, at what voltage level must a GFCI be installed for luminaires?

In the context of permanently installed pools, currents associated with electrical equipment, including luminaires, can pose significant safety hazards, especially in wet environments. To mitigate these risks, the National Electrical Code (NEC) stipulates that ground-fault circuit interrupters (GFCIs) are required to protect against electrical shock.

The correct answer indicates that a GFCI must be installed at low-voltage contact limits for luminaires. This requirement arises from the understanding that in wet or damp environments, the danger of electrical shock increases drastically. Low-voltage systems are designed to operate at a voltage that minimizes the risk of severe injury or fatality as a result of electric shock, making them ideal for use in settings like swimming pools where water contact is common.

In this context, the low-voltage requirement helps ensure that the electrical equipment operates safely without exposing users to high-voltage risks that could result in serious injury. This practice is aimed at maintaining a safe swimming environment and reducing the potential for ground faults, which GFCIs are designed to detect and interrupt.

The other options do not align with the safety considerations specific to luminaires in pool installations. Standard voltage and high-voltage installations pose much greater risks and are not suitable in such environments due to