555.13 DOCKS bonding of metal parts

[woodymars]

nec2020
555.13 says to connect solid #8 back to "grounding bus in the panel board"
555.2 defines a "marina power outlet" as a panel board.
so i only should need to run from lift to the pedestal correct?

 

[Rick 0920]

It appears to me to be very similar with the common bonding grid that applies to permanently installed pools. Any metal noncurrent-carrying parts associated with the dock should be connected with a #8 solid cu. conductor. The few docks and boathouses that I have done, I have installed a sub-panel protected by a 2 pole GFCI breaker near the shore. I use PVC (or carflex where needed for flexibility), PVC click straps, and stainless screws. Then bond any noncurrent-carrying metal parts with the #8.