By way of "re-introduction", since I haven't posted for a long time: I'm not an electrician but am interested in all things electrical, especially historical topics on both sides of the meter.

Anyway, I just came across some photos of a spectacular GE low-voltage installation, which I thought might be of interest:
GE relay installation

This has so many cool features, I don't know where to begin. Aside from the wire-management technique, there's the extra relay in the 1900 box on the end of the trough (why?), and the slightly "listing" relay to the left of the EMT run (maybe it's in a 3/4" KO?)

I've seen a few photos of "interesting" GE relay setups over the years, but this is by far the most impressive!