What is the maximum distance between grounding electrodes when using structural steel as a lightning down conductor?

When using structural steel as a lightning down conductor, the maximum distance between grounding electrodes is established to ensure effective grounding and minimize the risk of lightning-related damage. This distance is determined based on standards that emphasize the importance of maintaining a reliable low-resistance path for lightning currents.

The specified maximum distance of 60 feet between grounding electrodes facilitates a robust grounding system that can effectively dissipate lightning energy into the earth. Keeping the electrodes within this distance maximizes their effectiveness in providing a pathway for lightning to reach the ground safely, reducing the potential for hazardous voltage spikes in the structure.

Distances shorter than this may also be acceptable, but exceeding this recommended maximum could compromise the grounding system's overall effectiveness and reliability. Therefore, 60 feet provides a balance between practicality and safety in lightning protection design.