There are a bunch of good people here that can help you.
You need to say where you are going to be located, too.
Of course, the genset (that's the industry term for them) needs to have a large power inverter so that there is NO power loss, ever, for the computers. The switchover is instantaneous and not felt by the computers.
Then the electrical installation needs to have a control panel that will:
1) Realize the lights went out
2) Start the generator
3) Provide good current
4) Realize when the current comes back on
5) Shuts down after a short cool-down period
There are plenty of people that can handle this. Costs, depending on what else besides the 20 computers are going to be on line...like the A/C, lightening, etc...
HB
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