I'm no expert, but I think it's common for all sorts of commercial equipment (and, come to that, a lot of domestic appliances in some parts of the world) to be configurable for single or 3-phase (and maybe 'split-phase' in some countries), and the current required will obviously be much higher when a single-phase supply is used. The clue to the truth is the rated power.ooks as though it was designed as a 3phase, then modified to a single phase, giving a much higher current demand in the process. Are such commercial dishwashers usual?
Kind Regards, John