To: @adamchilders
There are multiple past forum posts by different users on their experiences with Voltage dips/spikes. Use the SENSE forum ‘search’ feature and re-read their complete blog about “dips”, “spikes”, or “Power Quality”. There can be numerous reasons why you are seeing so many ‘dips’.
Here is an example from several years ago. Please keep us posted on your findings and your solution.
Ok will do. I will also upload my raw data if anyone wants to check it out
power_quality_raw.csv (32.4 KB)
To: @adamchilders Another recent post in the SENSE forum with a similar voltage issue you are experiencing. See his picture and the solution.
I have tried adding screenshots to my post and when I upload the screenshot it shows in the preview window on the right, but when I try to actually post it says that embedded media is not allowed. Suggestions?
Hello All
This is my second week of sense installation and just started looking at the sense labs data. Noticed under Power Quality that I have some high voltages registered. I do have an EV charger at home and am not sure if there is any correlation at this time. Comments are appreciated.
@gazunni , you are showing relatively few spikes and dips compared to most Sense users. You have two dips and only one spike over the past two weeks. Firing up a high wattage (level 2 / 240V) EV charger will typically cause an extended small droop in both the Legs (L1/L2) in your home for the length of the charge cycle and possibly an initial dip below the limits.
Did the utility repair fix the issue?
Great data. I’m curious, how are you able to capture it?
@gazunni , here’s an example I posted earlier about voltage fluctuations due to EV charging. My example is for 240V, 80A.
Here’s some interesting validation for Sense Power Quality checking. A couple weeks ago, my home insurance started offering Ting devices ($99) and paid subscriptions ($49) for Ting’s electrical monitoring service, all paid for by the insurance company (plus a small discount on home insurance). I think Ting is only available via insurance companies today. The device plugs into the wall and monitors the voltage on one leg of your wiring at 30M samples per second. The good news is that I have only had one voltage dip/spike over the last two weeks, and both Sense and Ting picked up the same one.
The ability is already in your Sense application under “Dashboard” then click on “Labs”, then “Power Quality” under fault detection. Hope that helps
Dips and spikes are really expected depending on your Utility provider, location, weather, time of year. Some areas are especially susceptible to “brown outs”. If it is excessive, you need to determine if the problem is within your home environment or from your supplier.
I just noticed in the app over 164 power quality issues all within one minute?! I’ve experienced no real world issues and the app is clearly missing data on the day of the supposed problems, so I’m guessing there was some glitch that had nothing to do with my actual power quality. Does anyone have thoughts?
I would love to attach screenshots but the site won’t allow me to. 
Try posting the screenshot now. Have see a couple cases where a reboot of the monitor arrests recurrent bursts of bogus spikes / dips. But I haven’t experienced directly. I have seen pretty accurate correlation with other voltage measurements (see a couple posts above). So it could be real.
That would inspire me to do a power cycle on my Sense monitor using the dedicated 240V breaker they are usually installed on.
I’m new to this subject, my voltage swings seem to be high? Not sure how to monitor it?
could not post screenshot?
Voltage dips due to mean shift down on voltage How can I tell if this is incoming (First Energy Inc) or in house ?
House mean voltage is hitting below 105 and down to 100 so dips fall out of range by large count 385
Std benchmark is 120 V +/- 5 So, this offset is bad or not?
My power was just out complete but the event was not detected. FYI
