SBB stands for which term in the grounding and bonding standards?

• A. Secondary Bonding Busbar
• B. Single Bonding Bar
• C. System Bonding Bus
• D. Station Bonding Bar

Answer: (A)

In grounding and bonding, components in a telecom site are tied together so everything remains at the same electrical potential. The term you’re looking for describes a local bonding point used to connect equipment and non-structural metal parts to the broader grounding network. SBB stands for Secondary Bonding Busbar, which is that dedicated busbar used to establish a secondary bonding path inside equipment cabinets or on equipment frames. It ensures that handles, shields, enclosures, and other metal parts share the same potential as the main grounding system, helping to prevent shock and reduce interference from voltage differences.

That’s why this term is the correct one. The other names described aren’t the standard terminology used in the grounding and bonding guidelines, so they don’t align with how SBB is defined in this context.