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Old 12-09-2017, 07:48 AM   #1
unclesam
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A/C Electrical Power Distribution

I have a 2016 Montana High Country 352 RL with two air conditioners; one front, one rear. They are both connected to the same power feed, L1 or L2, I'm not sure which is which. My thought is they should be on separate power feeds. Can I move one A/C power feed to the other power source? I would switch the washing machine power and one of the A/C power lines. They both would still have a 20 amp circuit breaker, see picture
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Old 12-09-2017, 10:00 AM   #2
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Unless you are experiencing a problem tripping, I would not move it. 50 amps is more than adequate to run two A/Cs. But moving one to a different hot leg is not a bad idea either. If you are on 30 amp service, it would not make any difference since you probably could not run both A/Cs at the same time anyway.

But don't assume the left side is one hot leg and the right side is the other. May be that there are two busses running the length of the box with each alternating breaker connected to a different buss. I am going to guess the dryer is on one leg and the two A/Cs on the other. Only a meter would tell for sure.
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Old 12-09-2017, 11:37 AM   #3
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You are correct, the buses are split left & right. L1 feeds one side, L2 the other. It should not be a problem if you want to swap loads on those breakers.

Here is what mine looks like:
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Old 12-09-2017, 04:57 PM   #4
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Being both AC's and the dryer is on the same leg I would move the one AC to the other leg. Only do this yourself if you understand the electrical field.
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Old 12-09-2017, 05:20 PM   #5
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I guess I would say if its not broke - don't fix it.
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Old 12-09-2017, 06:22 PM   #6
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On my 2014 my ac's are on different legs. I know this because when i monitor my amps on my progressive read out i can watch my amps change on l-1 and l-2 when the ac kicks on and they increase conciderably. I believe each a/c runs about 13 or 14 amps each with the 15,000 a/c running 1 or 2 more amps than the 13,500 a/c. I agree with Dennis if you have a dryer then i would be sure to not have it on the same leg as the 2 a/c's if they are on the same leg,If you put to much amps on one side of your box then it becomes unbalanced.If your house had an unbalanced box then when the a/c,dryer or something else that draws a lot of amps kicked on then you would probably see your lights dim for a second when heavy appliance kicked on. I don't know if that's the case with rv's.
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Old 12-09-2017, 06:29 PM   #7
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I don't have a washer or dryer in my rig and don't plan on getting them, too much much pin weight for my truck.
Thanks to everyone for your advice.
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