Shore power stopped--gen works

Replace the transfer switch with male and female plugs as necessary.

It's been a long hot day my brain is working at 10%.

My panel has 2 legs. Right side is dead. Bu my feed from shore power is only 1 leg.

So it's transfer switch right? On the genny I had both air condertions cranked. On shore power there is no 12v and everything on the "right side leg" is dead.

Does a transfer switch have heat sensitive temporary breakers? It's been hot. Everything worked fine this morning.

Sounds like the batteries are failing. Why are they failing? Well you have to determine whether they have lost the connection to the converter, or if the converter has failed. Put your meter on the converter output positive and negative terminals. If you see 13.6 there, you should see it on the batteries on their positive and negative too. If you don't see it on the batteries, the wires between the converter and the batteries are loose.

In my case, it was the negative wire off the converter that fed to the battery. I jiggled it, and all the lights in the house lit up. Tightened the screws up and it worked forever.

IF everything, and i mean everything for 110v works with the generator
then yes, there is a good chance it is the transfer switch

but start with the easy stuff
take a close look at your shore cord male plug
is burnt is it pitted and black
is it melted

goto home depot etc.. buy a new TT-30 male (trailer 3 blade male)
and replace it

your 30amp Transfer switch is most likely located behind the breaker panel/converter

which means several hours of work, no power, and the need of someone electrically handy to get in there and check it