When i was taking electrical classes my professor said that thers is 125 ways of wiring a receptacle but only one way is correct.And he got this information from one of the manufacturers.
Have you guys heard of such a thing?
He never gave us the answer. It was a project we were to finish and i do not believe any of my classmates got close.
Here go. I've seen #12 aluminum speed wired in the back of the outlet. 2 runs, in and out, and a third was added around the screws. Some times you can't believe it.