roof air for 30 amp service

onecolbs wrote:
I have a 2001 bounder 39z. It has only a 30 amp service. Can I unwire on rood air and run it through its own 110 15 or 20 amp breaker so that if that is plugged into a 110 on a post in an rv park so that both roof airs can be run at one time? thanks onecolbs

I do just that when on 30 amp sites.. Here is how I did it.

I do **NOT** have an Energery Management System (These instructions will need to be modified if you do in the first step)

Parts needed

12 ga wire, including at least some flexible wire, Junction box or boxes, Breaker box (Optional) and some kind of access portal or (you can use a basement compartment, I did not since at the time I had no idea how to get there, I do now).

Plug and socket (15/20 amp socket, (Has a "T" shaped neutral) and a 20 amp plug recommended) 12ga extension cord and it should have a 15/20 amp outlet as well (I had to change it), 20 amp plug is best (Likewise but I did not change it)

I choose to trust the park breaker

now the hookup

Original set up

Branch Breaker 20a-------Air Conditioner

New set up

Branch Breaker--------1/2 12GA extension cord with outlet end.

Other (plug) half of said cord---Junction box behind breaker panel--Orignal wire to A/C

The plug and socket are in a box I installed in the side.. If I were doing it today I'd rout them to a basement compartment.

Operation:
On 50 amp site (Mine is a 50 amp rig) plug plug into socket close door

On a 30 amp site: Open door, unplug, plug into the extension cord and plug it into the park's 20 amp outlet

Emergency use: If I need to say: Air up a tire.. Nice haveing a 120 volt outlet on the SERVICE side of the rig.

My coach (see sig.) has two roof airs and 30 amp service.
I run both air conditioners with no trouble.
However, for YOUR rig, do it YOUR way!

Our '94 Southwind has two rooftop units but just 30 amp service. We rewired the rear AC unit with a transfer switch so the unit runs from a separate 20Amp connection at the post. We have always been able to run both units with the generator. Adding the transfer switch to the rear unit allows us to continue running both on the gen set. We made the wiring change at the junction box near the generator.

I run both A/Cs in our 2003 Bounder. It also has only 30A service. Like several others have said the EMS handles any overload.

1999 flair as stated I can run both airs just start one at a time
ken

Yes. I have a Power Solutions kit that does just what you are asking about.

Bob

Inquiring minds want to know.
Bill

Here is how I added extra service for my 95 Bounder.

But wait! There is more. A Bounder 39Z is a diesel pusher with 50 amp service. So which is it? A 50 amp 39Z diesel or a 30 amp gas burner of unknown model?

Richard

Does your Bounder have an electronic climate control? I run both roof ac units at the same time regularly. One will start up and the other will "shed" until the first compressor gets going. I have a 1998 36s(see my profile). In use the extra 20amp on the post for my after market electric water heating element.

Yes, there have been lots of threads here on that very thing and it is very doable.
The only problem you might run into is that 20A receptacle at the post is often badly worn. Otherwise your good to go.

Good luck,
Scott