I have an EBC II controller (http://www.highgravitybrew.com/productcart/pc/EBC-II-with-Infinite-Power-Control-306p3073.htm) with a 3 prong "dryer type" plug aka NEMA 10-30P (L shaped prong). I intended to plug it in to my dryer outlet, but of course, the outlet is a NEMA 10-50R ( | shaped...