Maybe I'm out of line, but the tester I posted was pretty much made to be safe for HO use. My post was just to see what voltage the OP has now so they could take it up with the PoCo if it was not in "range". I don't think there is anything a DIY could even try to do to fix over-voltage from the PoCo. But, I obviously respect whatever call the Moderators make.
My remark wasn't to you directly. It was just mainly stating the OP's problem, as far as the lights and A/C, was solved, and that any suggestions for further possible solutions would be getting into DIY. Your suggestion is safe enough. With meters, if the receptacle is TR, then the probes wouldn't go into the slots and then the plate would have to be removed. This would expose the OP to live voltage.
Agree completely. The exact reason that I proposed a way to read the voltage that should be no more hazardous than plugging in a phone charger. Thanks for clarifying.
