Would an inspector ever see this? An inspection is not needed just to install a new washer and dryer. If this is part of a job that is being inspected (new construction or remodel), it shouldn't have a 3-wire receptacle, so this model wouldn't be used.
If the customer knows that a washer/dryer combo such as the Miele will be installed when the wiring is being done (requiring 2 240V receptacles), I would like to see 2 separate receptacles installed by the electrician rather than using an adapter such as this.
