Which North American railroad had the longest non-redundant electrification of mainline? That is, for example, a fifty mile stretch of ten track main line running between Podunkville and Nowhereburg would count as only fifty miles, NOT five hundred miles.
The reason I asked it that way is because a single generating station could supply the entire fifty mile stretch, but could not supply a single track five hundred mile stretch. No mater which track you used you could only go fifty miles under wire. So, double and triple tracks don't count because they still go to the same place. I am looking for real distance between end points, not total milage of redundant plant.