Forum Discussion
CA_Traveler
Dec 31, 2018Explorer III
pianotuna wrote:That is in the eyes of the beholder and as you and I know that is not on the radar of most RVers.
May I ask what you believe is too low a voltage to operate the roof air conditioner?wrgrs50s wrote:
Like downtheroad, I've been camping all over since 2005 without a surge protector and yet to have a problem. I have a voltage indicator to watch for low or high voltage and I use my appliances wisely not to overload the 30 amp system.
Personally I prefer the US utility standard at the AC terminals - so 108-132V. But I have allowed it to remain below 108V.
One of the problems is that the AC mfg's don't publish this information that I've been able to find. Instead they just publish some nominal voltage.
I haven't posted the following in a long time.
1. AC's may/may not have reduced life down to 102 or 104V. I suspect the mfgs test at lower voltage and determine that the life exceeds the warranty so don't rock the boat with unnecessary information.
2. Many posters state that lower AC voltage will increase the amps drawn. This is consistent with known motor theory that reduced voltage requires more amps for a given horsepower. But who says and has tested that a RV AC maintains the same HP with reduced voltage?
Years ago I and another poster tested our RV ACs and found that amps reduced with reduced voltage. Our results were posted on this board. Maybe my current newer ACs have changed in that regard.
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