New Grounding Procedures for Work on De-Energized Lines Eliminate the Need for Ground Switches

Current grounding procedures exhibit serious shortcomings where the line is subject to significant induction levels. The induction levels at the safety grounds are examined and it is concluded that maximum E/M induction levels far exceed the E/S induction levels. E/S induction levels are fairly constant and can be made manageable by transposition, by sectionalization where needed, and by use of proper phasing arrangements where more than two circuits occupy a common ROW. Alternative grounding procedures are suggested including the elimination of ground switches from future lines. The proposed procedures are shown to be safer and more economical.