We have a hanger on a navy base where the electrical vault is in the center of the hanger. The contractor is running the 13.5kva to a disconnect outside the hanger and then running EMT across the hanger deck ceiling and through a stairwell to get to the electrical vault room transformer. It doesn,t seem right on an electrical stand point or a safety stand point. Any code references would be appreciated. I haven't found the right code reference yet to question it.