For the last 8 work days, I've worked in an old building built in 1929. It's 8 floors high, and the length and width of an entire city block. It has 4 service entrances. Two of them are rated at 13,200 volts direct from the substation. From there, their are several transformers rated at 4160 on various floors throughout the building. I've never worked in a building bigger than this so my question is, is this how power is distributed in newer building like this one?