I was doing some research on meanings of NEMA for an article that I am writing and did a search on Wikipedia to see if they knew that it means. And under NEMA on Wikipedia pops up with this image.
WOW, that is basically all I can say, sorry!
This just goes to show that anyone can put anything on Wikipedia! So make sure to double check your sources if you decided to reference wikipedia for articles.
You know, now that I am thinking about the Flux Capacitor in BTF, did it really need to be NEMA rated? It is not like it was exposed to any elements!