in Chicago, and most of her suburbs, the receptacles have always been mounted horizontally, well, at least as long as I have been at this.:, just never bothered to ask anyone, since I didn't think there was anyting weird about it
BUT,..AT&T had a huge plant in Cicero called Hawthorne ...co-incidence ?
When I lived and worked there I never knew it was different from anywhere else. Then someone from Wisconsin asked me about it, and I didn't know what to tell them. Then I moved to PA and here they are all vertical. I told people that they were horizontal in Chicago and the first thing they asked was "How do they nail the plastic boxes on the studs sidways?" haha--plastic boxes, yeah right! No MC boxes either!
