Sub Panel has 120V and 240V Circuits


Old 11-25-13, 03:41 PM
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Question Sub Panel has 120V and 240V Circuits

I have installed 2 sub panels. One at my detached garage, and the other at my detached office. My question is: Do I need a grounding rod at the point of each of the 2 sub panels?
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Old 11-25-13, 03:46 PM
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Panels in detached structures require a grounding electrode system unless they are only served by a single circuit.
Old 11-25-13, 04:31 PM
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Both a ground rod, GEC, and an EGC. You do have four wires to the panels don't you?

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