I noticed that the trains block the circuit breaker box in one photo. This is a NEC violation. its unsafe. You need access to the box esp if something goes wrong. min distance in front of box should be 30" clear. A transformer starts to burn and you need to shut off the circuit you got a big problem. I suggest you think about installing the box on the outside of the building in a NEMA 3 or better box.
LOL! I don't believe I have ever seen a breaker box with 30 feet clear in front of the box in any building that I have ever been in, including 50 story office buildings that I have inspected for work.
30 " = 30 inches. 30' = 30 feet.
Pretty much every manufacturing/factory building I've worked in has some sort of tape on the floor in front of any large electrical panels stating not to put anything there. Now, do people sometimes put things there when they shouldn't, possibly. But they have always been marked.