Electrical · E-R2Y49

Transformer Separately Derived System Grounding Diagram

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Grounding connections for a separately derived transformer system comprise the primary supply, primary feeder grounding conductor, and transformer windings with neutral connection. A grounding electrode conductor connects the transformer neutral to a grounding electrode, which utilizes either an available qualifying electrode within twenty feet or a three-quarters-inch diameter by ten-foot long copperclad steel ground rod. A bonding jumper links the system, and a listed ground clamp secures the connection to the electrode.

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