ground fault reset
there are two plugs (on my 2003 380 #379) that have red rectangular reset buttons on the receptacle outlets. one is in the head, the other by the refridgerator. these can trip due to moisture or an overload. also, check the shore power connector to the dock supply. if the shore cord does not twist lock, you may have a big problem. my dock connection was not such that the cord from the boat would twist and lock. it came loose, lost ground and welded the leads in my shore power cable and fittings on the boat. ( i have two... one for a 16000btu in the main salon that is separated from the regular boat curcuit that carries a 12000in the aft cabin along with other ac components. $300 dollars later all is working again....marina did not seem to feel responsible. another good test, is to find something that is ac powered and check all of the outlets. if you find one side or the other is blown, it is the ground fault switch in the head or galley. just reset it and it should work.rt