Is the statement 'Each leg of a self-supporting tower should be bonded using a #6 AWG conductor' true or false?

• A. True
• B. False
• C. Not specified
• D. Only for certain towers

Answer: (B)

Bonding is about creating one equipotential metal network across the tower so that lightning and fault currents have a low-impedance path and no dangerous voltage differences between parts. The statement that every leg must be bonded with a #6 AWG conductor is not correct because the conductor size and the bonding configuration are not universal; they come from a bonding plan that considers the tower design, the number of legs, distances, corrosion, and the expected fault current. Some designs bond all legs together with a single ring or interconnected straps rather than running a separate #6 conductor from each leg, and in other cases a larger or different-sized conductor may be specified. So while bonding is required, the exact per-leg conductor size of #6 AWG is not a blanket rule. Always follow the project’s bonding plan and applicable standards.