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Old 06-16-2010, 04:25 PM   #1
hubbub52
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Join Date: Oct 2009
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M.O.C. #9743
a/c electrical question

Ok I have installed a progressive EMS system in my 2006 3400rl and I noticed that both of my a/c's are on the same power leg. This tends to drive this leg to drop voltage to the point that the ems will shut down the power because of the low voltage. My microwave is also on this same leg. My question is if this is the way it should be wired or should I switch one a/c to the other leg. I do have a powermaster voltage booster and it does boost the voltage to an acceptable level, but without the booster it tends to drop to an unaceptable level. When I run both a/c's and microwave the voltage still is above the shutdown level with the power booster, of course that is dependant on the voltage being at least 116 to start with before adding the powermaster. I haven't looked to see what all is on the second leg, but those are probably the three big amp draws.
 
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Old 06-16-2010, 04:46 PM   #2
camper4
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M.O.C. #6635
I don't know how mine is wired but if I knew, I would try to balance the 'big loads' between the two main legs coming in.
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Old 06-16-2010, 05:07 PM   #3
dieselguy
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M.O.C. #3085
I'd suggest moving one A/C to the other leg ... generally the two legs are split at the main breakers ... one leg right of and one leg left of. The breakers are similar to the ones in your home ... rock it and then pull out ... making sure the power cord in unplugged.
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Old 06-18-2010, 02:10 AM   #4
Jdrobone
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M.O.C. #9833
Paul,
Looks like you know what to do. Put the smaller A/C and the microwave on one phase and the larger A/C on the other.
Jerry
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