SOLUTION

• Single-phase grounding of multi-phase circuits is avoided. All conductive objects within the workers’ reach (aerial or on-ground) are bonded to the grounding system. Their placement at points where workers may come in contact with the parts ensures adequate protection to the worksite.
• The earth is never used as a protective grounding conductor; neither should it be used as part of a circuit path between protective grounds.
• Overhead ground wires are bonded to the worksite grounding system (structural steel) with protective grounds for workers who will work nearby. Bonding of overhead ground wires to the worksite structure reduces step-and-touch exposure voltages on the ground. They divert fault currents away from the structure footings to adjacent structures in case of accidental energization.