Originally Posted by Diffident
Did you take the panel cover off and place a clamp meter around the wire at the breaker to check for load?
What's the voltage, neutral to hot under load? Is there a voltage drop compared to no load?
What happens when you don't use the UPS?
How many times did you power down and test again? Could it have been a one time fluke?
And my other question, if every thing is fine in your office, what possessed you to plug your system into an outlet in the hallway?
1. Haven't investigated in the circuit breaker itself, I'm wondering if there's a loose connection either there or path to for both.
2. Voltage as per my original thread post is currently 117v, usually 115v-120v during the week/time of day which is acceptable as per code.
3. This happened before the UPS, without UPS and using other decent ($80-100) power bars.
4. Never powered down, UPS kept it online. Repeated 3 times now, back and forth, always better on this office circuit.
5. I've been trying to diagnose this for a while. I do get spikes of lag on this good circuit too but it seems about 70 good / 30 bad, nothing in Windows has given clues and I have no electrical engineering background so trying to isolate cause by trying different things.
I just noticed something really interesting that I've been exploring today but I don't fully understand it, if I use my multimeter and set it to Hz (frequency) I get notably high numbers probing ground to neutral.
In my office if I get around 200hz as indicated above (ground to neutral) then I get occasional hitching on display and delay ingames, desktop. If it's around 100-150 then it feels fast and responsive, I tested this when lag increased and that was my observations.
Interestingly my hallway without my UPS on it has 0.002v load ground to neutral, and 60hz frequency ground to neutral but with UPS it's getting 2.2Khz (2200hz) which sounds crazy, to me this screams loose neutral connection or possibly the opposite office has loose and the hallway doesn't.