When using nonmetallic conduit for a wet-niche luminaire in a swimming pool, what size insulated copper bonding jumper is required?

The requirement for using an 8 AWG insulated copper bonding jumper for a wet-niche luminaire in a swimming pool is based on safety standards established by the National Electrical Code (NEC). In wet locations, such as swimming pools, it is critical to ensure proper bonding to prevent any electrical shock hazards due to potential differences in electrical voltage.

The NEC specifies bonding requirements to ensure that all conductive parts of the electrical installation are connected to ground, providing an effective path for fault currents. Specifically, for bonding conductors like the jumper used in this scenario, the minimum size is determined by the size of the branch circuit conductors supplying the equipment.

Using an 8 AWG copper bonding jumper meets the necessary size requirements for effective bonding while also complying with provisions for enhanced safety in a wet environment. The correct sizing of bonding conductors is essential to ensure that they can handle any fault currents that may occur without creating a hazard.

In environments like swimming pools, where moisture and conductive materials are present, ensuring that appropriate bonding is in place is paramount for the safety of users. The choice of 8 AWG thus reflects the balance between sufficient sizing for protection and compliance with code requirements.