During Covid I got a job doing controls work for Amazon. My site was a new
build out and we had to wait for things to be signed off on before we could get to work so I had a lot of free time. Amazon has some pretty neat software for seeing what issue other sites are having with the goal it would be possible to learn from each other and have better trained maintenance and controls techs. The amount of sites that had major electrical issues was mind blowing. It seemed like a site a week was going down for
power related issues. There was a site on the East Coast that had solar panels on the roof and something between the cells and the inverter caused a major electrical fire. The photos were insane. To go along with the monitoring software there is a conference
call for SEV 1 and SEV 2 events. I really believe the site rep for that site has a live event background, as the longer the
call goes more and higher managers join the
call. Every time a new manager would joining the
call they would ask about if the next
shift would be effected and the site rep calmly would respond, the fire department is working hard to extinguish the flames but they are currently 15' tall across most of the roof. I don't think we will be able to start the night
shift as scheduled..." The site we did our training at was shut for three days because of a massive fault
in one of the electrical rooms. Eaton had to come out and replace several damaged panels. I can't find my notes but like 1200 amps 480v or higher distribution.
All this to say, massive buildings that are built quickly seem to have electrical issues. For their part Amazon was strict on the size and capacity of breakers the in
house techs were allowed to activate. Anything over a certain
cal rating and an outsider contractor was brought in.