MS T&D Lines Practice Questions - Mississippi Transmission And Distribution Lines Contractor Examination Exam

Why is a wye-connected secondary preferred on a multi-grounded four-wire distribution system?

A wye connection provides a common neutral point that can be grounded and used for single-phase loads A wye secondary has no neutral, which eliminates ground-fault current A wye secondary can be used only with delta primaries and never with wye primaries Wye secondaries block all lightning surge current

Correct Answer:

A wye connection provides a common neutral point that can be grounded and used for single-phase loads

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