Which of the following establishes grounding requirements for an amateur radio tower or antenna?

Grounding requirements for amateur radio towers or antennas are primarily governed by local electrical codes. These codes are designed to ensure the safety of electrical systems and the protection of structures and personnel from electrical hazards. Local electrical codes can vary by location but generally encompass regulations on how structures, including towers, should be grounded to prevent lightning strikes and electrical surges from causing damage.

While the FCC Part 97 rules relate to the operation of amateur radio and may contain stipulations about equipment use and licensing, they do not provide specific details about grounding requirements. Similarly, FAA tower lighting regulations focus on aviation safety and do not address grounding issues. Underwriters Laboratories’ practices may offer general guidance for various electrical installations, but they are not legally binding and are not specific to amateur radio setups.

Overall, local electrical codes provide the necessary authoritative framework to establish standardized grounding practices, tending to the safety and compliance of amateur radio structures.