Which is a proper grounding method for a tower?

The correct approach for grounding a tower is to use separate eight-foot ground rods for each tower leg, which are then bonded to both the tower and each other. This method ensures effective grounding by providing multiple points of electrical contact with the earth, thereby reducing resistance and enhancing safety.

When multiple ground rods are utilized, they help to disperse electrical surges or lightning strikes more effectively into the ground. This is particularly important for towers, which can be exposed to high voltages during storms or electrical discharges. By bonding each leg of the tower to the ground system, you create a lower impedance path for fault currents and help protect both the tower structure and any attached equipment from damage.

In contrast, other grounding methods mentioned might be less effective. For instance, a single ground rod may not provide sufficient grounding unless it is installed in a highly conductive soil, and even then, it may not offer adequate protection during severe weather events. Connecting the tower to a cold water pipe can present risks due to the potential for corrosion and electrical continuity issues. A ferrite-core RF choke, while useful in reducing RF interference, does not serve as a suitable grounding method since it does not provide a direct and effective path to the earth for electrical faults or surges.