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Old 05-03-2019, 12:42 AM   #13
Senior Member
City: Seattle
Country: USA
Vessel Name: Conundrum
Vessel Model: Nordlund 63' Pilothouse
Join Date: Feb 2017
Posts: 111
Originally Posted by Comodave View Post
Does the slip with the 50 amp service have the new GFI? Maybe the slip with the 2 30 amp outlets does not. It sounds like maybe your neutrals are comingled on the boat. How experienced are you with marine electrical systems? If you donít have a good handle on it maybe you should call in a certified marine electricial to diagnose the problem. If you donít get it right it could cause a fire or worse.

I think you are on to something with regards to the newer marina power systems. We have the new pedestals in neighboring marinas with ELCI. We were tripping 30A breakers when connecting our 50A cord to 2x30A with a Y adapter. Our boat electrician told me that I can't use the Y adapter with the 30A pedestals with ELCI. straight 50A to a single 30A is fine.
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