08-14-2019, 10:35 AM
(07-04-2019, 07:51 AM)3200Open Wrote: So it seems that all the Tiara's at our marina have the same problem with the new GFCI pedestals. Some other brands are having problems as well. Here is what we found, the new NEC code for marina power pedestals require GFCI protected outlets for the shore power cords. These look for a maximum of 30 milliamperes max difference between the hot and neutral wires within the shore power feed, if the pedestal outlet sees anything more than 30 milliamperes difference between hot and neutral then it trips the pedestal breakers. On Tiara's, with (2) 30 amp shore cords, the neutral gets shared behind the main breaker panel and the pedestals cannot match the hot and neutrals because it cannot differentiate with shared neutral. The solution was to separate the shore 1 and shore 2 neutrals to 2 different bus bars(my boat had 2 neutral bus bars that were connected via jumper wire) keep the hots associated with its neutrals so that each shore power feed has its own dedicated hot and neutrals. On my boat, the only thing on shore power 2 is the cabin AC/Heat. Everything works fine now with not trips. Hope this helps others as they move to these new pedestals.
Thanks for the solution. I am running into the same issue on my 3200.
where are these bus bars for shore 1 & 2 located within the boat?