You would see fluctuating voltage depending on load. Normally you should only see local load variations of maybe a volt or three (unless you're doing something

You would see fluctuating voltage depending on load. Normally you should only see local load variations of maybe a volt or three (unless you're doing something with long extension cords and like living a bit dangerously). A loose/lost neutral situation can see voltage fluctuate 10s of volts. I think technically the range would be from 60V->180V, but, don't quote me on that and I'm not sure this meter can see that wide of a range.