The trip setting of the ground-fault protection device required in this Section was reduced. The overcurrent protection device(s) that supply marinas, boatyards, and commercial and noncommercial docking facilities must have ground-fault protection not exceeding 30 mA (Fig. 18). Analysis: This requirement was added to the NEC a few Code cycles ago to address the startling number of electrical injuries and deaths that have occurred around marinas and boatyards. The rule requires ...

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