Staying in Montauk NY for a month and having a real issue with my electrical power needs. Marina has mostly 125v 30 amp power towers. The few 50 amp towers only produce about 200 to 210 volts on my panel and a/c units shut down flashing low voltage . I purchased a Hubbell splitter with the box that the two 30 amp plugs go into and then comes out with a single 50 amp plug to connect my shore cable to. According to my research before buying this expensive splitter, It’s supposed to boost my power to 250v but still only 30 amp which I could live with. When I plugged it in my panel showed only 200volts. Anyone ever have this problem that could suggest a solution. Going to get very expensive running my generator to make 240 volts for a/c and it’s getting hot up here. I put a test meter into the two 30 amp plugs in one tower and get 125v to 130v from each outlet but my panel voltmeter reads about 200 or 210 volts. Going to test voltage coming out of splitter box tomorrow and see if maybe another tower will have better voltage.