We just had a bosch dishwasher installed. I believe it was hardwired but no electrician was required, just the delivery/installation guys which were part of the package. The 1st team forgot to flip the switch to turn the machine on. The 2nd team a few weeks later flipped the switch, then pushed button on machine and then the dishwasher worked fine. The 1st team just kept trying to push button and forgot they had flipped switch off to install.