How well do you know the Code? Think you can spot violations the original installer either ignored or couldn't identify? Here's your chance to moonlight as an electrical inspector and second-guess someone else's work from the safety of your living room or office. Joe Tedesco, who has a knack for finding shoddy electrical work, did the dirty work and found this mess. Now it's your turn to identify the violation.
I discovered this while waiting for the train to arrive in the Washington, D.C. Amtrak station. It looks like this has been this way for a long time. Someone should have enclosed these exposed wires in a junction box, or removed them altogether, a long time ago. As per 300.15 [Boxes, Conduit Bodies, or Fittings — Where Required], "Where the wiring method is conduit, tubing, Type AC cable, Type MC cable, Type MI cable, nonmetallic-sheathed cable, or other cables, a box or conduit body shall be installed at each conductor splice point, outlet point, switch point, junction point, termination point, or pull point, unless otherwise permitted in 300.15(A) through (M)."