[jclark003]

Are you sure your AC and charger are setup as 240? My 43 open also has a single 50 240VAC and a Single 30/120 and the generator wired in as 240. However nothing on my boats ac side is wired in at 240V. I believe there are 2 sides to the distribution panel that are each powered by one of the 240 legs (50a and generator). In the case of power coming in from the 30a connections, both sides of the panel are tied together at the source selector switch.

I suspect your 40 express is setup similar in which case 2 30A cords plugged into the 2 receptacles should power everything. I would give that a try before messing around with splitters. Let us know how you make out. I would be interested to learn if you actually have 240V appliances in your 40 express.