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i have a bunch of outdoors 2' x 4' open bottom concrete junction boxes. the question is, does each box need to have a ground rod installed and bonded to the ground wire? if so can someone please point me in the right direction in the NEC code book?

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If these are just junction boxes you don't need a ground rod. Why do you think you need a rod? If a transformer vault or the base of a power pedestal that would be a different answer. Grounding electrodes are covered starting in 250.50.

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