Adding a 3rd AC Unit

JCat wrote:
Update: Had the AC guy out and talked to Customer Service at Mandalay.
The washer wiring gauge will not handle the AC as it is a 15a circuit.
The EMS in the RV will not be able to balance the load and would require an upgrade (per Mandalay) even if I add a 20A breaker and circuit.

I will add the AC, and run a wire on the roof down to a 20A breaker box and then a cord to the 30A pedestal connection.

So I will have the AC working only when parked.

I doubt very seriously if a running A/C draws close to 15amps and the starting current won't hurt or trip the breaker with it's built in power curve. As for your EMS, what does it know except for when you exceed the set current draw and it will then shed whatever loads you tell it to. I have mine to shed the air and only the air. In addition, I've installed a dual power adapter for the rear air, that I can unplug and re-plug into a separate outlet on the pedestal, so you could do that and wire your third one straight in to the breaker box if you can get to it and many have run extra AC wires inside the AC vents. They stay nice and cool in there, as well. Whatever you might do, be sure and put some breaker or fuse protection out front somewhere, unless you're going to use a min. of #12awg and will only be plugging into a 20amp outlet on the pedestal. You could even make yourself up a portable breaker box when plugging into any outside source, where you're not fully protected downrange and for the size wire that you're using.