What is the minimum size of the bonding jumper required for equipotential bonding in hydromassage bathtub areas?

The minimum size of the bonding jumper required for equipotential bonding in hydromassage bathtub areas is determined by the National Electrical Code (NEC). According to NEC Article 680, specifically for the equipotential bonding of conductive materials in areas with water, the bonding jumper must be sized appropriately to ensure safety and effectiveness in reducing shock hazards.

The correct answer is 8 AWG because this size is specified in the NEC for bonding in wet locations, including around pools and hydromassage bathtubs. The 8 AWG copper wire is sufficient to handle the necessary current and reduce the risk of electrical shock in such environments. Proper bonding with the correct size wire helps ensure that any stray voltage is effectively equalized, thus minimizing the risk of electric shock to individuals using the hydromassage tub.

While other sizes such as 6 AWG, 10 AWG, and 12 AWG may be used for bonding in different situations or requirements, they do not meet the specific guidelines laid out for hydromassage bathtub areas under Article 680. This establishes the importance of adhering to the appropriate wire size as outlined by the NEC to maintain safety in wet areas.