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Grounding Electrode for Transformers
I am working at a large machine shop that has transformers for all the industrial equipment. The electrical work was all performed by an electrical contractor. I noticed that all the transformers (over 30 of them) have been bonded to the water line through out the facility, but I do not see any grounded electrodes installed anywhere. Many of these have passed inspection, but I am curious because I did not think the water line could be used as a grounding electrode unless it was within 5 feet of the entrance to the building. Most of the connections are from over 200ft from the entrance. Am I missing something in the code?
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