Boat Dock Subpanel Ground

[vpracer]

Setting up a sub panel in my over water boat dock. 120' run from the main and will run 6/3 uf (I hope) under the walkway and up into the storage room. I am thinking 50 amps will be plenty to run boat lift motors and a few plugs and lights. Water level is typically 2 ft below walkway and boathouse although wind and flooding could cover wiring. The boathouse storage room is about 25' from land. Any thoughts on grounding at sub?

 

[LXCam]

You need to have as well as required by code to have a separate ground. The neutral buss is not allowed to be bonded at the subpanel.

 

[rlitman]

For safety purposes, it is a good idea to have that whole circuit fed by a GFCI. With a GFCI in place, I'd be more worried about keeping the connections corrosion free than I'd be worried about grounding.

 

[Norcal]

Receptacles in boat houses and receptacles supplying boat hoists not exceeding 240 volts are required to have GFCI protection.

 

[vpracer]

Indeed GFCI. Forgot to write that.

 

[tarmy]

My dock has a disconnect added as well. The local people that have power over water suggested it to ensure that winter time, working on the dock or stairs....which are all aluminum...or during severe water events...that the disconnect can be readily accessable...and observable.


Seems to work out good...