Being an inspector for an engineering firm is a bit different than
working for a State, or County. The contractor knows after the first few "encounters" what you will expect. At Dulles, we expect them to READ their specs, and KNOW their code. They also know we will be there all day, every day. It is best to ask the question prior to beginning work, and we are always available for the consultation. A contractor was to provide temporary power for a major rebuild (I'd rather not say what as that pinpoints the project and contractor). I was not paying a lot of attention as Conex boxes came in, but being nosy, a few days later, I opened a conex box to find what you see in the pictures.

This is what they had done (and spent a LOT of money to really mess up some good equipment)

1. Taken the coils out of an old 13.2/480 transformer and bolted them to the floor of the conex box. 2500 kva (big fella), access was through a 2' bolted panel, or through the 15 kv switch. Violation 110-3, 450-13 NEC, 110-16 (96 code)

2. Removed the back panel off the 15 kv switch and used it as the front wall of the transformer. Violation 110-3, 90-7

3. The conex also included a 480 volt MDP. Top removed, rear removed, buss bars rearranged to fit the design. Condition 2 with just 3' clearance provided at front. Violation 110-3, 110-16.

Of course, not considering the violations alone, a CONEX box ?? Do you know how HOT they get in the summer sun ? Think that might affect the equipment? I have not found stats on the temps, but you better believe I will take some measurements of my own this summer, just for reference. Square D, and UL might be a bit ticked that they butchered the equipment like this,

don't ya think ??
George Corron