Oh ... since you did mention 'dishwasher' .... I'd specifically let that one pass. UL statements on the issue are quite convoluted, with far too many factors that you are in no position to evaluate. It's very possible that UL did specifically consider, and allow, the use of flexible cord and plug connections for that dishwasher. Yet, to get a definitive answer on that question would be a real challenge, even for the very people who obtained the approval in the first place.