My dishwasher in the kitchen has a metal cover inside and some persons got a small electric shock when they touched the metal cover with wet hands. So I took a voltmeter and measured the voltage between the metal cover of the dishwasher and the metal-washbowl (I suppose the metal-washbowl is on ground). I measured an AC voltage of 26.7 V (Note: the dishwasher is turned off). [metal-washbowl] <--- Voltmeter ---> [ metal cover inside of dishwasher] Has anyone else here experienced something similar? Or have an explanation for this?