The bonding conductor or grounding electrode conductor for a communications system shall be what and may be insulated, covered, or bare.

• A. Listed
• B. Insulated
• C. Bare
• D. Grounded

Answer: (A)

The main idea is that equipment used for bonding or grounding a communications system must be a listed product. Listing means a recognized testing laboratory has evaluated the item for its intended use and it is approved for connection to the grounding system in electrical installations. Once something is listed, it may come in different physical forms—insulated, covered, or bare—depending on the specific product and application, and still be acceptable because the listing covers those forms. This is about safety and compatibility through certification, not just the presence of insulation or the bare state.