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Recent content by Tom04

  1. Tom04

    Ground fault in control wiring of 480 volt motor circuit

    I am trying to better understand how a ground fault in the 120 volt control portion of a 480 volt, 3 phase motor starter circuit can cause a ground fault alarm in our high resistance ground fault detection relay on our MCC. We incurred a ground fault alarm on our 480 volt, 3 phase MCC. I looked...

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