What must a pool light junction box connected to a conduit be for use?

A pool light junction box connected to a conduit must be listed for use with underwater lighting fixtures. This means that the junction box has been tested and certified by a recognized testing laboratory to meet applicable safety standards and is suitable for the specific application in wet or damp locations, such as around swimming pools.

Ensuring that the junction box is listed helps to guarantee that it can safely handle the electrical components necessary for pool lighting, providing protection against electrical shock and short circuits. This is critical in environments where the fixtures are exposed to water and may encounter moisture, thereby necessitating enhanced safety measures.

Other options like temporary, runtime, or assembled do not meet the safety and regulatory requirements established by the National Electrical Code for electrical installations involving pool lighting. Such requirements focus on stability, integrity, and safety under operational conditions, which is fully encompassed by having a listed junction box designed specifically for such applications.