One thing that comes to mind is typical range cords are listed for Domestic Range use only and even though they fit a 50 amp receptacle the wire inside them is not rated for 50 amps. In this case the load from the Sander won't exceed the ampacity of the cable. I appreciate that these guys go into someone's house with little or no hope of finding a correct rated outlet for their sander and resort to this. It is infinitely better than the guys who pull the cover off the panel and connect direct to a breaker in the panel. In a perfect world a cord adaptor would be available with an o/c device rated for the sander.
