How should a grounding connection from a lightning protection system be established?

A grounding connection from a lightning protection system should be established at the diagonal corners of the structure to effectively dissipate the electrical charge during a lightning strike. This configuration helps ensure that the grounding system uniformly distributes the energy across the structure, reducing the risk of localized damage and enhancing overall safety. By placing connections at the corners, the system can create a more effective grounding network that decreases the impedance of the lightning protection system, facilitating a quicker and more efficient dissipation of the lightning current into the ground.

Establishing grounding connections solely at the center, the highest point, or just on the roof does not provide the same level of effectiveness. These methods may create points of weakness where the time and distance for the discharge to reach ground level is compromised, leading to possible damage to the structure. Therefore, the strategy of connecting at the diagonal corners is critical for optimizing the grounding performance in a lightning protection system.