As it appears that you are somewhat of a novice
re: shore power
and always trying to be the voice of caution; I would highly recommend that you have a qualified marine
electrician check out your shore power
system from the shore pedestal
to your panel board. Take notes. Don't "talk to somebody on the dock
." Pay for a couple of hours of professional troubleshooting and advice.
By the way; and not trying to be dramatic, but: 30 mA of 120 VAC will kill you DEAD
It is fairly obvious that you applied 250 VAC to the incoming hot and neutral that, if your inverter/charger is wired as many are, this means that your inverter/charger saw 250 VAC instead of the 120 VAC it was designed for. The marine
electrician can remove the inverter/charger and replace it with a terminal strip to get you up and running. Contact me via IM for a repair facility that may be able to resuscitate your inverter/charger.