Ingineer
Well-known member
As I mentioned before, I don't believe this has anything to do with the EVSE. If you are hearing direct audible noise from your panel/subpanel this does not sound good! Usually noise indicates arcing, which would definitely cause plenty of EMI/RFI using the AC wiring as an antenna.
I will volunteer to stop by your place next time I'm in the southbay and check it out if you have not found the source of the problem by then. Are you available anytime during the day on weekdays, maybe at lunchtime?
If you are comfortable with it, I recommend you open your panel and start charging on 240v to see if you can locate the source of the noise. In particular, look for any screws or terminals that are discolored.
I have a thermal imaging camera that will spot such things quickly.
Until you can figure out what's happening, I agree with your recommendation to stop charging on 240v until you can isolate the cause.
-Phil
I will volunteer to stop by your place next time I'm in the southbay and check it out if you have not found the source of the problem by then. Are you available anytime during the day on weekdays, maybe at lunchtime?
If you are comfortable with it, I recommend you open your panel and start charging on 240v to see if you can locate the source of the noise. In particular, look for any screws or terminals that are discolored.
I have a thermal imaging camera that will spot such things quickly.
Until you can figure out what's happening, I agree with your recommendation to stop charging on 240v until you can isolate the cause.
-Phil