The mixer is brand new as is the cord. Changing the location does not make a difference and am using gfci outlets. It seems that it's probably the thickness of the dough being mixed. I don't totally understand why the GFCI would trip. Would it help to change the outlet to a 20 amp instead a 15 amp and would that maybe hurt the mixer?
The mixer works on the GFCI outlet if there is no load, no dough. I would have to mix up another batch of dough which would take some time. So if you think this is the thing to do it will be some time before I can test it. Let me know if I should mix another batch of heavy dough.
It ran for maybe a second with the dough in it. With nothing in it there is no problem except that it's there to kneed the dough.