This reminds me of a passage from Bruce Sterling's _The Hacker Crackdown_.
Parked outside the back is a power-generation truck. The generator
strikes me as rather anomalous. Don't they already have their own
generators in this eight-story monster? Then the suspicion strikes
me that NYNEX must have heard of the September 17 AT&T
power-outage which crashed New York City. Belt-and-suspenders,
this generator. Very telco.
The Portland, OR AT&T POP has _two_ trailer (40') mounted generators in
the parking lot, in addition to a fixed mount generator. Typically,
generators that large are in the 2000-5000kw capacity.