For bonding the Operator Position SBB, what gauge is specified for runs below 10 feet?

• A. 12 AWG
• B. 10 AWG
• C. 8 AWG
• D. 6 AWG

Answer: (B)

Bonding conductors are chosen to create a reliable, low-impedance path between metallic parts so they stay at the same electrical potential. For the Operator Position SBB, the guideline uses a practical rule: when the bonding run is under 10 feet, a 10 AWG copper conductor is the required size. This keeps the bond sturdy enough to handle fault currents and mechanical stresses without being unnecessarily bulky.

Choosing a smaller conductor, like 12 AWG, would undercut the bonding path’s ability to carry fault current and maintain a solid connection. Using a larger conductor, such as 8 AWG or 6 AWG, isn’t necessary for such a short run and would add bulk without added benefit in this specific case. For longer runs or higher current requirements, larger gauges would be considered, but for runs under 10 feet, 10 AWG is the specified size.