[AFMUG] APC Site Wiring Fault

[Nate Burke]

I have a UPS that I recently installed pulling a 'Site Wiring Fault' for 
20 seconds a few times a day, at the exact same time daily. There are no 
other local electrical device at the location that I can find turning on 
or off at the same time, or that would have this kind of regularity.

There is a smart meter at the location, could the smart meter be doing 
some polling that would cause this?  I have another Identical UPS off 
the same utility HV line, but different transformer and meter, and it 
does not have any errors.

Has anyone seen these before and been able to track down a cause? On the 
APC forums, one reply was to simply disable the alert, saying otherwise 
you'll descend down a never ending rabbit hole of diagnosing and 
tweaking your electrical plant.

Nate