Many dishwashers are hardwired directly into a juction box built into the dishwasher. Bosch, and other European makes, have a cord with a plug, so you have to have an outlet near the dishwasher and hidden behind a cabinet to plug it in. Its not a big deal for an electrician. If you are replacing a dishwasher that was direct wired, an electrician can just take the wire that was hooked to the old dishwasher and wire an outlet near the new dishwasher to plug it into.