RV Site Power Supply

[lakewaymike]

I am preparing to install 22 R.V. Pedestals in a new R.V. Park. I plan on splitting them up where I have 2 sets of 6 sites on a 200 amp disconnnect for each set. And I will then have 2 sets of 5 sites with 200 amp disconnects for each set. In Article 551.76 (d) it states no connection to a grounding electrode shall be made to the neutral conductor on the load side of the service disconnecting means or transformer distribution panelboard. Does this mean that my grounding conductor that I run with the feeders must be terminated on a separate ground bar installed in each 200 amp main disconnect that is connected to a grounding electrode and not on the neutral bus? This sure is confusing. Thanks

 

[steve66]

Re: RV Site Power Supply

I am not real familiar with article 551, but as I understand your question, I think you are correct. The neutral and the equipment grounding conductor (EGC) should be bonded together only at the line side of the disconnecting means. There should be no other connections between the neutral and EGC. (You may actually have them bonded in two places - one at each disconnect). This keeps the neutral current from flowing on the EGC.

The feeders from the disconnects to the panels would then have separate ground wires, and these would have to be landed on a ground bus separate from the neutral bus. However, if you have to provide additonal grounding electrodes at the pedestals, these would would also be tied to the ground bus.

This is basically how any grounded service is ran, so I am wondering if I understand your question correctly?

Steve