NM CID EL-1 Practice Questions - New Mexico CID EL-1 Electrical Distribution Systems, Including Transmission Lines Examination Exam

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NESC 2007 Rule 097 generally requires that on a multi-grounded wye primary the primary neutral and the secondary neutral be:

kept isolated from each other at every transformer, with no metallic path interconnected, usually at the transformer, so there is one common grounded conductor connected only through a fuse connected only on delta primaries

Correct Answer:

interconnected, usually at the transformer, so there is one common grounded conductor

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