Originally Posted by stevewise
One other thing I have ran into is if you are running the AC you cannot run the microwave without tripping the 30 Amp breaker.
Agreed. I have to turn off the AC to run the microwave and then when the food is done, I turn the AC back on. Hairdryers are another no-no when you are on 30 amp unless you turn off everything else.
I don't believe you will have any success running both ACs on 30 amp service or at least I never did. Also be careful, you don't want to try running both your both ACs at the risk doing damage to one or both of the compressors from low amperage. If the ACs seem to shut down and restart continually, you may have a low amperage condition. Shut one off and see if that clears up the frequent restarts.
As for the cheater cords... it depends on the phasing of the circuits. 50 amp uses two phases; 30 and 20 amp, one phase. if the post is wired with both the 30 and 20 amp using the same phase I don't think it will work. If they have used different phases for the 30 and 20 you might have some success with the cheater cord. The caveat is that if the post only has a 30 and 20 they are probably both running off the same phase.
Maybe one of the electrical engineers on the board can confirm or clarify.