I think PA summed it up. The danger of extension cords is as bad there as it is anywhere and that is what 210.52 is all about. If you have "kid" problems, don't leave things plugged in. That is no reason not to have the ability to plug things in. Like a lot of things in the code, these rules just create a market for innovative solutions.
http://ep.yimg.com/ca/I/yhst-17771562391491_2140_7903344If they wanted the code to be easy to obey, they wouldn't have made it over 1000 pages long full of arcane language that they change every 3 years
