ECM - 0707 IPQ.indd

ite power and grounding audits/evaluations of commercial and industrial locations routinely identify electrical power system grounding and bonding problems. According to S. Frank Waterer, an electrical engineering IEEE Fellow at Schneider Electric with more than 30 years of experience, approximately 70% of all anomalies, dysfunctions, or problems associated with power distribution systems are directly or indirectly related to bonding and grounding issues. To maintain the safety of use and acceptable performance of connected equipment, we typically design and install grounding and bonding of the building structure (building steel) and certain conductive parts of these systems. In fact, we assume that safety grounding and bonding of the electrical power system and the load equipment are inherent parts of the design and installation so that both meet applicable codes and product safety standards. As electrical engineers, plant/facility electrical maintenance personnel, and electrical installers, this is part of doing business. However, this assumption can be risky.