Transfer switch.

[Shickshack]

He i wonder if it happen to someone else?
After using the the generator if i plug the shore line to an outlet of 15 amps it does not connect. It does not charge the battery fridge does not work.
It happen twice to me until i restart the generator and then reconnect the shore line.

[ependydad]

Assuming you're talking about a built-in generator and have an automatic transfer switch....

Sounds like your transfer switch is "sticking" so that it isn't switching back to the shore power side of things.

You might look at testing it with a voltmeter while it's not working. See if it's switching power.