[Donaldjames]

on my 43 open,I have an issue with some 120 volt outlets do not work when the shore power is in the 120/30 amp supply cord to shore power.When plugged into the 50 amp 220 shore power they work,,,,is that supposed to be like that?

That is how it works on my boat , the way I understand it is there are two hots 120 volts 30 amps each and when you are using only one of the hots “Called Legs” you are only getting half of the power  . When you are at 50 amp 240 using both legs then you have full power to the boat.  I am not an electrician but this is my basic understanding of how it works. We own a 2009 Tiara Sovran .