Mark Twain wrote:
In passing... had (4) power outages
today all while I was online!

Thankfully the 8500 came back up OK
each time.

Robert

I use a UPS here (SPS type). It covers the one second outages well.

The other kinds of power outages, range from 20 minutes
to 2 hours, and the UPS doesn't stay up long enough
for those.

The price of sinewave output has come down. At one time,
something like this was $1000.

https://www.newegg.com/Product/Produ...82E16842301699

Half Load: 11.4 Minutes
Full Load: 3.3 Minutes
1350 VA / 810 Watts

Topology - Line Interactive
Transfer Time - 8ms typical : 10 ms maximum

So that's similar in some ways, to an SPS, only with
Sinewave output instead of modified square wave. (An SPS
runs ice-cold normally, as it isn't doing anything
active when not called upon. Double-conversion UPSes
on the other hand, have fan cooling, because they're
always working, no matter what.) When that unit is
boosting the output, it would need to be running
in some capacity (it can compensate for a brown-out
on the power company side).

With a single idling PC and small LCD monitor connected
to one of those, you'd probably get 45 minutes from it.
Still not enough for a 2 hour outage, where the power
truck has to come out.

There was a time, where we got two one-second
outages per day here. And I decide to get a UPS to
cover over those outages so the PC wouldn't crash.
I got about ten years out of the battery, before
it needed to be replaced (the UPS tests the battery
about once a day, to see if the battery impedance is
correct - it doesn't measure the hold up time or
anything, as a test).

Paul