seanadams wrote:PLMs are "transformer isolated"...
Secondly UPSes can operate in a variety of different modes...
So does it go out in "all directions"... yes, ...
One more thing you might try is to run an extension cord and test the PLM on a completely different branch circuit. Have you tried the iHealth script?
Thanks,
Very useful information, which I could not have found via google without a few years engineering course, first.
I had not run the iHealth script you initially created since March. I ran it, and used it as the basis for some application of the troubleshooting suggestions throughout the site. By the end of March, I was consistently receiving reports like this one, even with more than 50 or 100 iterations of the test:
Whole-house statistics:
Success rate: 630 / 630 100.0%
Good, bad, total devices: 63, 0, 63 (good means >=95% reachable)
Average RTT: 0.188
Based on your comment, I ran iHealth last night at 10 iterations and had slightly worse results compared to what I was consistently finding several weeks ago.
Whole-house statistics:
Success rate: 638 / 640 99.7%
Good, bad, total devices: 62, 2, 64 (good means >=95% reachable)
Average RTT: 0.203
I'll try to run more tests for better data to compare whether there's really an iHealth difference evident between having the APC connected or not. Regardless, if the difference above is confirmed to be related to the APC, I'm not too concerned about it.