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Old 07-14-2012, 09:54 PM   #1
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Low voltage and air conditioning

Ok guys here is what I have in the evening with the ac turned off.



Then here is when the ac is on.



It hasn't tripped this weekend bit it wasn't hot.

What now? Normal? Dangerous?
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Old 07-14-2012, 11:22 PM   #2
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there is nothing wrong with 110. i would check at the pedistle and see if it does the same there with and with out a/c.

this looks more like u have a bad connection somewhere. wouldn't think u would get this much drop. i would find each of the plug in connections between u and what ur plugged into (pedistle). separate each of them and check for melting rubber and or discolored connections. clean and reassemble. rerun ur test and see if there is an improvement.

the other part that points to the campground is that it wasn't hot so there wasn't as much drag on the electrical as normal.

i was going to prove that there wasn't much drop on my trailer while using a #12 extension cord. got a 15 volt drop and traced it back to a bad adapter.

110V isn't going to hurt u. i suspect under the higher demand days, these numbers won't be as good. ie, see if u get the same results durring the day even though the demand at the campground isn't as great.

i would also ask some of the neighbors if they are experiencing the same. might even check the voltages they are getting.
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Old 07-15-2012, 06:55 AM   #3
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10% is usally the maxinum allowable drop with out causing problems. that said if capacitors on a/c getting weak could cause a/c to overamp and trip breaker.
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Old 07-15-2012, 07:19 AM   #4
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In my experience, that is normal voltage drop with a load on your camper; an autotransformer would kick that back up to let your AC work less hard.

However, any lower than that you might start having start and tripped breaker problems.

Put a autotransformer (Like the Franks Unit) on that line to be sure.
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Old 07-15-2012, 01:19 PM   #5
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I have yet to check this o shot day when it is tripping the breaker. I had No problems with it this weekend. I will report back.
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Old 07-15-2012, 02:07 PM   #6
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I have a surge supressor that has a digital readout of the condition of the power at the pedestal. The air conditioner breaker started tripping and when I went out and looked at the pedestal, the voltage was at 104. I notified the campground and they had to move us because they had an electrical problem in the area I was in.
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Old 07-15-2012, 02:39 PM   #7
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Quote:
Originally Posted by xander
I have yet to check this o shot day when it is tripping the breaker. I had No problems with it this weekend. I will report back.
I bet on a hot day that will dip below 110v
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Old 07-15-2012, 03:41 PM   #8
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Quote:
Originally Posted by f1100turbo

I bet on a hot day that will dip below 110v
If it does can that hurt my unit? What should I do if it does? Im assuming this is probobly not the fault of my cord?
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Old 07-15-2012, 03:46 PM   #9
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low voltage will damage a/c over time. i will not tolerate a voltage drop over 10% without looking for remedy with host.
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Old 07-15-2012, 06:03 PM   #10
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Quote:
Originally Posted by xander

If it does can that hurt my unit? What should I do if it does? Im assuming this is probobly not the fault of my cord?
You need to plug your meter into the post that you cord is hooked to and see if its the same as when plugged into your trailer.
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