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This article is an overview of the various relationships between neutral currents, ground currents, electrode impedances, and voltage potentials that are encountered in the operation of multi-grounded wye distribution systems. This system continuation is the most commonly used configuration among U.S. domestic utilities. Voltages range from 4.16/2.4 kV to 34.5/19.9 kV. The most common system voltages are 15- and 25-kV class systems with nominal operating voltages on rural systems generally being 12.47/7.2 kV and 24.9/14.4 kV. The article aims to review the relationships that might be encountered due to system grounding and provide an overview of common installations and their relative effectiveness.