For bonding the Operator Position SBB, what gauge is specified for runs below 13 feet?

• A. 14 AWG
• B. 12 AWG
• C. 10 AWG
• D. 6 AWG

Answer: (D)

Bonding aims to create an equipotential path between metal parts so there’s no dangerous voltage difference if a fault occurs. For the Operator Position SBB, the bonding run is a short connection, so the guideline uses a relatively large, robust conductor to keep the impedance very low and ensure the fault current has a ready path back to the source. Six AWG copper provides a solid, low-impedance bond that can safely carry fault current and remains practical to install over a short distance. Smaller gauges would raise resistance and could allow larger potential differences during a fault, while a much larger conductor would add unnecessary cost for such a short run. So six AWG copper best balances safety, performance, and practicality for bonding runs under 13 feet.