I like this, it is simple and powerful. Maybe you can add something in the background or something at the bottom? I like that you used all three colors.
#66, I love the concept and the colors. The only problem is that it doesn't have any electrical reference other than the name like the ones ranked #1 and #2. Don't get me wrong, I am debating going with something electrical or something simple like yours. Your design has caught me off guard and now I am confused my self.