Proper grounding of on-site electrical power systems

Abstract

There are a number of factors that should be considered when grounding on-site power systems. Simply conforming to minimum code requirements will not necessarily assure the degree of reliability required for such systems. Thorough consideration should be given to protecting against power disruption within the building or facility and providing adequate ground-fault protection. Techniques for both equipment and system grounding should provide optimum safety and assure maximum continuity of power to essential loads. This includes proper grounding and ground-fault sensing when the transfer switch is in the emergency as well as normal position.