Thanks! We also found this issue, unfortunately not in time for the RC2 build - but it will be fixed in our GA release.
The problem is caused because (in some servers) the POWER type sensor can produce metrics both in Amps, OR in Watts.
We do have two monitors - as you saw. One has threshold for 20 (amps) and one has threshold for 2000 (watts).
However in the RC2 build the monitors do not check for the metric unit type.
In our GA release we will include filtering for the monitors, so that the appropriate threshold runs against the appropriate monitor type.
For the moment you could work around this - for example, create two groups for POWER sensors, one where 'baseUnits' property = Watts and one where baseUnits=Amps. Then create overrides for the Hardware Sensor monitors that run against those groups.
And this problem is already fixed for our GA release - which is coming very soon!
Thanks again, and please let us know of any more feedback on MP RC2!
Vice President, Product Management