What should be done if high resistance is found in a grounding system?

If high resistance is found in a grounding system, the most appropriate action is to inspect and repair the grounding system. High resistance can indicate potential issues such as corroded connections, loose terminations, or damaged components. These problems can severely impact the performance of the grounding system, making it less effective in dissipating fault currents or providing protection against electrical hazards.

Inspecting the grounding system allows the technician to identify specific areas that require attention, ensuring that the grounding electrode system is reliable and functioning correctly. Repairing any faults addresses the root cause of the high resistance, leading to a safer and more effective grounding system.

In contrast, simply replacing the grounding electrode may not address underlying issues that could still lead to high resistance. Increasing the grounding wire size without rectifying the actual problem won't necessarily resolve the high resistance. Ignoring the situation because it is below a certain threshold can lead to unsafe conditions, as any amount of high resistance can hinder the grounding system's ability to perform its critical safety role.