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In a new RV park where we have power pedestals with receptacles for RV's to plug in, My understanding of Art 551 is that grounding is accomplished with a grounding conductor with the feeder conductors. And, the grounded and grounding conductors are not bonded at each pedestal. Am I correct?
Hey Ronald thanks for your question. Yes, you are correct. A change to the 2017 NEC in 551.75(B) now clearly states that a grounding electrode is not required at Recreational Vehicle power outlets or supply equipment - unless they are used as service equipment. An equipment grounding conductor is required as stated in 215.6 which references 250.134. Grounded conductors are not allowed to be reconnected to ground or to equipment grounding conductors on the load side of the service disconnecting means as stated in 250.24(A)(5).
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