Ground Fault Testing: Why It Matters A ground fault occurs when an energized portion of a grounded electrical system becomes unintentionally connected with a path to “ground” or “earth” (through personnel, equipment enclosures, grounded conductors, conduits, fish-tape, etc.). When this happens, the system phase-to-ground voltage can cause harmful and excessive levels of current to flow through the unintentional path. The magnitude of unwanted ground current varies depending on a variety of system conditions. Higher levels…