Generators, AC units, UPS’s and auto cutover switches are all mechanical susceptible to failure. You can do your best with maintenance and pre planning but in t

Generators, AC units, UPS’s and auto cutover switches are all mechanical susceptible to failure. You can do your best with maintenance and pre planning but in the end there is a non zero chance that a condition that you didn’t anticipate or couldn’t afford to account for will happen and your critical infrastructure will go down.