I have normal power needs, electric stove, oil hotwater, microwave oven, window A/C units. I also will be using some power tools like radial arm saw, router etc. I was wondering if I should upgrade or not. I haven't moved into the house yet so I can't tell if lights dim etc. The people there now work on cars so they have arc welding equipment and a compressor, lathe and all the other stuff that goes into keeping a stock car.