I almost don't know where to start:
OK, The feeder to a subpanel in a "Video Room" where TV ads are made starts here. (through the 1" conduits)
The 3-#1 & 1-#2 feed to this panel. (I've colored the wires, none of them are really identified).
From there, the 3 conductors that are exiting the top left run up to splices in these 2-5S Boxes (no nipple between them).
From there, there's about a 150' run (conduit's apart in many places), to the subpanel in the bootleg studio (other side of this wall)
Both the circuit breaker feeding the 120/208V panel in the 2nd Pic, and the
120V panel in the video room are 125 Amp 2 poles that have had the handle ties removed.
(BTW, the Romex in the 2nd picture runs through about 80' of 1/2 EMT towards the room also, where it becomes a flying spliced nightmare strung all over the room).