No confusion. If you are reading 240V between the X and Y of your female socket that is on the boat side of your shore power
cable and your boat panel has two busses ( a 120/240 V
System you are set to go ). You should read 120V between the W and each of the X and Y slots. Likely the shore power
in the pedestal
had one of the hot lines that should have been on X and Y connected to the W ( neutral ). You cannot draw full power from the reverse split
Connection, a maximum of 30amps from each leg of your AC panel. If you are looking at your boats electrical
panel chances are you have a column of breakers on the left and a column of breakers on the right. What you must do is turn of non essentials on each side that draw a lot of current
until you bring the amp meter down under 30A.
Sounds like you are on the correct pedestal
that is giving two phases for your system.
The trouble is when yo have a single
phase boat system and use the reverse splitter
That is connected to other than a single
Glad to help, Catman