Originally Posted by
littledan
It sounds like you have a broken neutral somewhere. You are probably reading high on that cct but low on the other leg. I would get an electrician in asap a broken neutral could kill your devices or burn your house down.
Probably this, get a sparky in to check and repair bad wiring first. I found some messed up wiring in my house the first few years in, usually by getting shocked haha. All my 2 way switches were messed. I have a Fluke IV, I would video record the live displayed data with my phone.
I rarely turn the power off if I need to install a celling light, fan, receptacle or switch unless absolutely necessary, quite experienced working in live panels here so YMMV. Getting shocked with 120/240v 1PH is really no problem unless your jumping into the bathtub with it. I hit myself with 30A, 100vdc one time and it definitely could have held on to me if I wasn't working overhead and I dropped down and away from my dmm leads. 575vac can hurts pretty intensely. My examples are not applicable but I felt like sharing.
Machining, Fabricating, Welding etc.