I would say the NM conductors coming behind the 3 gang box does not meet code, 300.4(D) have some photos of some houses where "EC" would never enter any box from the bottom, every one had the cables enter the top, but the wiring was poorly done & of course passed inspection.
Due to the garbage electrical work & the references to "110" & "220" volts, I called them a DIY'er with a C10 contractors lic.
