Not getting electric in RV, but power to pole/plug I think.

And just HOW did the campground guy determine it was 240VAC..:h...my reaction in reading your post indicates he may not know what he is doing. Each leg should be reading 120VAC and should be tested separately. Obviously, testing ACROSS both legs would read 240VAC but that's not what you indicate he did.

Since everything seems to be fine with the genset on, I suspect your problem is with the campground pedestal. Your surgeguard is doing it's job...get a meter and check the voltage yourself....Dennis