What does an ammeter reading of more than one ampere indicate when measuring ground resistance?

When an ammeter reading exceeds one ampere while measuring ground resistance, it indicates that a significant amount of current is flowing through the ground path. This high reading suggests a ground leakage current problem exists. Typically, ground resistance measurements should result in low current readings if the grounding system is functioning properly, as the intended ground path is designed to safely divert any fault or leakage current away from sensitive areas.

A reading above one ampere signals that there may be unwanted leakage current potentially impacting the safety and integrity of the electrical system. This could be due to insulation failures, moisture ingress, or other issues that compromise the grounding system's effectiveness. Thus, this reading is a clear sign that further investigation and corrective measures are needed to address the underlying ground leakage current issue.