What is the primary function of TBC in telecommunications?

The primary function of TBC, or Telecommunications Bonding Backbone, is indeed to interconnect the Primary Bonding Backbone (PBB) to the Secondary Bonding Backbone (SBB). This connection is crucial for ensuring effective grounding and bonding within a telecommunications infrastructure, which helps to maintain system integrity and protect equipment from electrical disturbances.

By linking these two bondings, the TBC facilitates proper electrical flow and ensures that all communication equipment operates efficiently and safely. It contributes to a low-resistance path to ground, significantly reducing the risk of electrical shock and equipment damage due to surges or faults.

Other choices relate to functions that are either too broad or not specific to the role of TBC. For example, while bonding and grounding are related, the primary purpose here is the interconnection itself, rather than simply powering devices or disconnecting faulty wiring.