When a UPS is plugged in to the mains, is it possible to plug the UPS output back to the same mains?
Will that work as an emergency power backup for the mains circuit?
The question makes no sense at first, since a UPS is supposed to do that by itself. No need to connect it in paralel. But here is my issue.
I need to plug in high consumption devices occasionally to the same circuit that the UPS is supplying to. Devices like a vacuum cleaner or an air heater which surpass the UPS's output power.
So what if I put the UPS in parallel with the mains so that I get emergency power and I can still plug in high power devices??
Where I live there are frequent power outages for short periods of time. And I have too many electronic devices that are reset with every outage and they lose any configuration they had.
It's not just my PC, it's also my router, cable TV decoder, stereo system, TV set, clock radio and so on.
I can't afford buying several UPSs to put in each room. Plus, it would be too messy with all those cords and cables going from the UPS to every device.
So it occurred to me if I could power the entire mains circuit (the one that goes to the bedrooms' plugs) with one UPS so all the devices would have emergency power when an outage happens.
And when I need to use the vacuum cleaner or some other high load, it would bypass the UPS and get the power directly from the mains.
Would this idea work?
If not, is there a way I can achieve this in an inexpensive way?