Electric power

[DWMOONEY]

We have a 2013 HR Endeavor 43 ft. I am not very good with electrical issues so my question is. For the first time since we purchased this coach we are getting into some warm weather, 90+ degrees. We are in a park that only has 30 amp service. The coach has three air conditioner units and as I understand it if I run two units I am already over my 30 amp service by six amps. The coach has a residential frig. One air conditioner will not cool the coach. How do you handle this type senecio?
Thank You
Dan

[Papa_Jim]

I don't know how to handle that situation, other than to find another park with 50 Amp service.

I can run the entire coach on 30 amp service as long as I only use 1 air conditioner. If the batteries need charging, I have to shut the air conditioner down for the time needed to charge the batteries.

Jim

[al2ride]

See if it will let you run one AC and the other two on just fan to help circulate the air. Does it have a generator?

[BFlinn181]

As you are discovering, there is a much bigger difference between 30 a and 50 a. than it appears. It's not 20 amps, it's a 70 amps difference. 30 amps is 30 amps. 50 amps is TWO 50 amp service lines, or a total of 100 amps. On a 50 amp pedestal you could run all 3 air conditioners, charge your batteries, cool your food, brew coffee and cook popcorn in the microwave all at the same time!!

[mel s]

Originally Posted by Papa_Jim

I don't know how to handle that situation, other than to find another park with 50 Amp service.
Jim

Originally Posted by BFlinn181

50 amps is TWO 50 amp service lines, or a total of 100 amps.
On a 50 amp pedestal you could run all 3 air conditioners, charge your batteries, cool your food, brew coffee and cook popcorn in the microwave all at the same time!!

I agree
Mel

[vsheetz]

Run the jenny during the heat of the day.

30a should run two AC ok, if you don't add the microwave or other large load.

[jonohio]

Yep. Genny time.

[Robin_M]

Originally Posted by vsheetz

Run the jenny during the heat of the day.

30a should run two AC ok, if you don't add the microwave or other large load.

I also agree that using the genny during the day is a good suggestion. As for running two A/C units on 30 amps. you can usually do that IF both compressors don't kick on at the very same time. With A/C units, it's the peak start-up load that's the killer. I am not familiar with the more recent coaches. However, on a new coach, I'm guessing that the controller unit for your air conditioners is smart enough to not allow two compressors to come on together - especially when operating with 30 amp shore power. If so, it might even references that feature in the manual for that system. Check it out. In addition, your coach should have a power management system that distributes power given a specific priority when operating on 30 amps. In other words, it shouldn't allow you to overload the system. My 2007 Dip has that system.

[al2ride]

If he has a generator it's probably rated to run everything at once. It would be nice to hear back from the OP.

[jonohio]

You could look into the onan E30w auto gen start unit if it is compatible with your setup. It will automatically start and stop the gen for the ac based on coach temperature.

[jonohio]

Sorry ec30w. About $600.

[Steve Ownby]

The reality is that you won't be able to keep it as cool as you would like. The best you can hope is that you can keep it in the mid 80s and dehumidified.
1. Make double sure the return air filters are clean.
2. Any window, particularly the windshield, that is receiving direct sun should have the nightshade down.
3. Run the fans on high. Don't close off any a/c vents. If the air flow is slowed you can get a freeze up.
4. Close off the bedroom during the day and run one of the front units. You should be able the run the other front unit on fan only.
5. Don't do any cooking during the daylight hours. Use micro for fast heat ups if necessary.
6. At night run the bedroom unit only.

You will quickly learn your power limitations.


Steve Ownby
Full time since '07

[mel s]

Originally Posted by Steve Ownby

The reality is that you won't be able to keep it as cool as you would like. The best you can hope is that you can keep it in the mid 80s and dehumidified.
1. Make double sure the return air filters are clean.
2. Any window, particularly the windshield, that is receiving direct sun should have the nightshade down.
3. Run the fans on high. Don't close off any a/c vents. If the air flow is slowed you can get a freeze up.
4. Close off the bedroom during the day and run one of the front units. You should be able the run the other front unit on fan only.
5. Don't do any cooking during the daylight hours. Use micro for fast heat ups if necessary.
6. At night run the bedroom unit only.
You will quickly learn your power limitations.
Steve Ownby

Steve
I agree.

When on 30A shore power we often run only the rear air, (and use a box fan to move the cooled air forward), during the day....at night we run the front air, (with the box fan blowing into the bedroom).
That sometimes works well, (depending on the OS temp).

Mel
'96 Safari

[OLYLEN]

This might work or may not. Run an extension cord to the refer from the power pedestal if it has a 15 amp plug also. Then you may be able to run two A/C 's which would be a big help.

LEN