Is the neutral of a high-impedance grounded neutral system allowed to have equipment grounding connections on the supply side?

In a high-impedance grounded neutral system, the neutral is intended to minimize the amount of fault current flow during fault conditions and to protect against overvoltages. The main principle behind a high-impedance grounding system is that it limits the current that can return through the neutral, which is crucial for maintaining system stability and safety.

Given this context, it is generally not permissible to have equipment grounding connections on the supply side of a high-impedance grounded neutral system. Allowing equipment grounding connections in this scenario could create unintended paths for fault currents that would negate the benefits of the high-impedance grounding approach. It could also introduce safety hazards, as the equipment grounding may draw current during fault conditions and expose equipment and personnel to potential electrical hazards.

Thus, the assertion that the neutral of such a system is not allowed to have equipment grounding connections on the supply side aligns with standard safety practices and electrical codes aimed at protecting equipment and ensuring worker safety.