Automatic transfer switch replacement

[burgman50]

Last time I used the rv I was in Campground on shore power with both ACs running watching tv. All of sudden power went out. Tripped the breaker at the post. Fired up generator and everything worked except rear ac. Finally got around to checking out the ats which is behind breaker box over fridge. Where shore power romex Connected to the ats, both plastic connectors were melted as was the ground wire. That explains why a breaker would trip every time I plugged in. I stopped right there and ordered a new ATS 30 from amazon.
Questions.....
1- could something have happened to the rear ac that caused the meltdown? Remember it was running when all this started and will not now run on generator power. It doesn’t even try to come on.
2 - the melted wires scare me. Looking online I see lots of melted wires with comments about being lucky no fire BUT nothing about any meltdown actually causing a fire. Should or could I move the new ats to a safer location?
3- is it possible or feasible to install a fire suppression device of some sort in the current ats location should this happen again and actually start a fire?
Thanks!

[Ray,IN]

The screws holding the wiring should be re-tightened annually, they do work loose while driving our incredibly smooth highways. Each year I find at least one that may be tightened a bit more.
I also check the individual breakers connections annually.

[burgman50]

Thanks ray. Annual tightening is now on the list.

[Mr Lars]

Bounders of that era, only one a/c will run at a time by design. There should be a switch that say's 'front', 'rear', you turn the switch to the desired a/c unit you want to use. its possible that switch you should have, may be failing, allowing current to both units. My Bounder works opposite of yours, I can get both units to run when on the generator, but only 1 when on shore power, I dont use both when on gen. because it is a full load, and after a few minutes, the gen. slowing losses the battle and lugs down.