50 amp MH, plugged into 30 amp, ok to run 2 ac units??

I have EMS and do it all the time. WH and reefer on gas.

BUT an EMS is required.

I also don't buy not being able to pull 30A continuously. I have an amp meter on 30 and I pull high 20s continuously. A breaker won't even pop at rating. More like 110% and for more like a minute or two. It's heat driven not amps. PF makes a difference.

I agree you need to monitor the voltage and check the plug for heat.

Yes I have switched off an AC when I had a worn out receps.