davefrommalton wrote:
...for my planned set up how many watts would I need?
...
The UPS watt-hour rating depends on what you want to do during an outage event. First you need to add up all the watts your entire system consumes. That determines the base number for how many watts the UPS can supply, which is not related to how long it will run.
Then the next item is the watt-hour rating of the supply. This determines how long your system will run on backup power. If all you want to do is be able to shut down gracefully, then the watt-hour rating does not need to be that large. However, if you want to continue working during an extended outage, then you need a much higher watt-hour rating. What this all boils down to is the size of battery in the UPS.
Just an example, you can have a 850 Watt capable USP, but it may only run at that power for 10-15 minutes, i.e. a low watt hour rating. Now of course if you draw less power than that you will obviously run longer.
So, the bottom line will be how much are you willing to spend for the amount of runtime during an outage.
Now, if you are really more concerned about surges and not outages, there are much less expensive alternatives by using surge suppressors.
As far as suppliers for UPS, I have found APC and CyberPower to be quite reliable.
