The bonding conductor or grounding electrode conductor for radio or television equipment can be made from which materials?

• A. Copper
• B. Aluminum
• C. Any of the above
• D. Copper-Clad Steel

Answer: (C)

The idea being tested is that grounding paths for radio or TV equipment can be made from multiple conductor materials as long as they meet code requirements. Copper is a go-to choice because it has excellent electrical conductivity and durability in moisture and corrosion-prone environments. Aluminum is also allowed and can be advantageous when a lighter, less expensive conductor is desirable, provided it is properly sized and installed to prevent galvanic issues and excessive impedance. Copper-clad steel combines a steel core for strength with a copper surface for good electrical contact, offering a strong, durable option that remains conductive. Because all three materials can perform the grounding role effectively when correctly installed, the correct answer is that any of the above are permissible.