OK I had AC No 1 trip a breaker today, it was in the 90's today with all three units running. Yes hot sun would have been above the drivers side where the electrical panel is. I read where a ventilation fan will reduce the amount of heat up there, but prior to doing this Mod I need to be sure that I do not have issues with the AC's.
So with me being blessed with all sorts of fancy electronics test equipment from my generator repair days I decided to get my flexible amp probes out and see what we get.
My Fluke meters are Calibrated and guaranteed accurate (I had to, it was my job).
I did sell my third Fluke Clamp on as I did not think I would need to do any more three phase measurements, didn't think about measuring three AC units at the same time! This means that I had to disconnect AC 3 and reconnect AC 2 starting it up separately.
FYI, Amperage wise all looks pretty normal between all three AC units.
I am on a robust 50 Amp service at my home location, and do run a progressive EMS unit.
Fans all on Automatic (they were blowing out on High
Coach temperature was mid 80's
Dometic Heat Pumps Model 459136
Specifications:
Results:
AC 1 (Front) Max Starting Amps = 32.1, Running Amps = 15.1
AC 2 (Middle) Max Starting Amps = 34.1, Running Amps = 14.4
AC 3 (Rear) Max Starting Amps = 29.4, Running Amps = 15.0
Now the photos to document the findings:
Flex Probes attached to the three breakers for each of the AC units:
Starting Amps AC 1 on left, AC 3 on Right
Running Amps AC 1 on left, AC 3 on Right
Starting Amps for AC 2
Running Amps for AC 3 on Right
If there are any other measurements that you would like documented let me know!
Hopefully this may help you if you have AC issues and have to involve an electrician or HVAC guy, I would suggest that my measurements would be a good baseline for normal AC operation.