The bonding conductor or grounding electrode conductor for radio or television equipment may be made from which of the following materials?

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

Answer: (A)

The materials allowed for bonding and grounding conductors are those that can provide a reliable, low-impedance path to ground and remain durable under fault conditions. Copper, aluminum, and copper-clad steel all meet that requirement when sized and terminated correctly, so any of these can be used for the bonding conductor or grounding electrode conductor for radio or television equipment. Copper is the standard due to its excellent conductivity and corrosion resistance. Aluminum is lighter and cheaper but requires appropriate sizing and proper terminations to prevent issues like galvanic corrosion. Copper-clad steel offers added mechanical strength with a conductive copper outer layer, useful in installations where the bonding path may experience physical stress. Because all three materials are permitted by the code for grounding conductors, the correct choice is that any of the above may be used.