I was checking voltage readings on my pellet stove and the Harbor Freight meter was reading 142volts. Oh my!! Check outlets in the house, addition and shop and all outlets read high. This was Sunday so I waited until today to contact an electrician. Rechecked voltage before calling and now the meter is reading 170+ volts. Called electrical provider and they sent out their tech. They check the voltage, and it was at 118 volts. I rechecked with a better meter and got the same 118 volts. I apologize to the tech and tossed the cheap Harbor freight into the trash. I have used these meters a lot of times but, at low voltage. Anybody else seen the same issue or was this just a fluke.