Two A/C units on a 30 amp service.

[Hurricaner]

Does anyone have 2 A/Cs on a 30 amp service? I was under the impression that Damon required a 50 amp service upgrade to install two air units.

Sam

[Hurricaner]

Does anyone have 2 A/Cs on a 30 amp service? I was under the impression that Damon required a 50 amp service upgrade to install two air units.

Sam

[angelman]

Hey sam, I also have 2 a/c units on 30 amp but when connected to shore power you can only run one at a time. When you use the generator you can run both. There should be 2 switches somewhere in the rear bedroom for controling which a/c you want to use. I used a power solutions adapter kit which lets you hardwire the front a/c to a second power cord, this way you can run both a/c's when on shore power.

[Chandler]

Hi Sam! I'm at a park now at a water site that only has 30 amps. It's been in the 90's for a couple of days now and I am running two ac's
I measured the current and with both running I'm showing 23 amps. I started both at the same time and saw 32 amps. It lasted for about 2 seconds. What I do is set the temps a few degrees apart so they both don't start at the same time.

Chandler

[TXiceman]

The newer high efficiency units can often run with 2 on a 30 amp circuit. Don't try to run the microwave at the same time.

Ken

[Chandler]

You're right, Ken, of course. Power management is the key...but if anyone knows this, Sam does.

I used an inductive ammeter on the wires at my circuit panel and I had lots of fun measuring everything.

Chandler

[Matt B]

Can anybody send me a diagram of how those two switches are wired. I would really like to modify the set up but haven't really be able to figure it out. I know that in the "both" position theyboth don't work when on shore power. Thanks

[Hurricaner]

I guess I didn't word the question real well but it looks like I have my answer. Damon does offer 2 AC units on a 30 amp service. I was really hoping they were smarter than that but I should have known better.

Matt B, I drew one up a while back I'll see if I can find it.

Sam

[Chandler]

Sam, you saw the post on RV.Net on the 30 amp, right? Is that why you were asking? I thought it was impossible to run both units at the same time with a coach that was factory wired for 30 amps. Fleetwood has a power management module that switches from one to the other automatically..I think Winny does too.

Chandler

[Hurricaner]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Sam, you saw the post on RV.Net on the 30 amp, right? Is that why you were asking? </div></BLOCKQUOTE>
No. I was under the impression that Damon required a 50 amp service to have two A/Cs (which as far as I'm concerned should be code) but they don't. I'm totally familiar with the ridicules work arounds these RV manufactures have come up with.

The EMS units work fine until you hit really hot weather like where I live and then if you can't run both compressors at the same time you will be sweating. People are under the mistaken impression that the EMS really lets them run both A/Cs when in fact it just cycles the compressors, it's better than a switch but it doesn't cut it when it is 110 out. 50 amp... there is no substitute!

Sam

[mlp911]

i just purchased a daybreak 3060 with 2 a/c's on 30 amp. it has the switches under the bed to select which one you want to run on shore power. when on generator with both a/c's on my gen would die after a few minutes of running. the dealer where i bought the rv says that the generator is too small to run both. its a generac 4800. the rv is a 2006 with very low miles and only 120 hrs on gen. the starter button on gen didnt work, fixed that and have ran both a/c's for a day with it dying once in the morning, then ran good for about 6 hrs. any suggestions? not very happy if i cant run both atleast on the generator...

[Rick Long]

On my Bounder I run BOTH air's off the generator with NO problem and I have a 30 amp system... BUT! my generator is 5500 Watts and the out put is divided into two separate circuits, one 30 amp and one 20 amp. The 20 amp circuit is totally for the rear air. The out put of my generator is actually 45 amps total, more than enough for both.
When I'm on SHORE power I only have 30 amps, so the controller switches back and for between the front and rear air.

You have about 40 amps available so you should be able to run them if you run nothing else... most use about 13.5 amps running, 15 to start.

From what you said... I would think your problem is more like a dirty carburetor or weak fuel pump... It may not have been run every month like it's supposed to be. Time and running it may clean it out.

[mlp911]

ok, was checking the carb and fuel filter, both were clean. but the way they had the fuel pump mounted the fuel hose feeding it was kinked badley. repositioned the fuel pump slightly and corrected it. was looking at the wiring to see if i could do like some of the people have done to hard wire one of the a/cs on a seperate cord. dont look like a very easy task on my unit the way the wires are ran. someone on here said they used a power solutions adapter to do it. what is that and where do i get it? thanks for the help....

[Rick Long]

Power Solutions