Addded a 3rd AC unit -IT IS GREAT !

JCat wrote:
I just completed the add of a 3rd AC unit
I hired an AC guy to do this upgrade as this was too much for me to do by myself.

Removed the kitchen ceiling vent, placed new AC unit in that opening, fit perfect.
Ran the thermostat wires across the roof to the bedroom AC and hooked them in there.
I control all 3 units at thermostat.

The 110 v had to be run across the roof, and is connected to a 20 amp breaker box, that then plugs into the 30 amp service at the pedestal. The 110v cable plugs into the ac unit and is removed when traveling.

I am in Palm springs currently and it was 102 degrees here yesterday.
With the 3rd ac unit on the inside temp was 71 degrees and cold.

I had wanted to hook into the RV's electrical system but this was not possible.
I called Thor and talked to a tech who helped build the Mandalays.
There is no circuit currently wired for a 20amp draw that is not already in use.

So I had to wire the unit outside of the rv's electrical system.
Only drawback is I have to go on the roof to plug and unplug the unit when traveling.

JCAT

Did you make a strong attempt for running all your wiring thru the ceiling vents to the rear AC? Once there, I would be thinking of some decorative vinyl surface conduit for getting the power wiring across the ceiling to the port side and down the bulkhead into the basement somewhere. Like it or not, it's still better than climbing on the roof and having the wiring laying up there as well.
As for using the pedestal, to power it separately, this is the way you'd want it, anyway.