On Tue, 18 Jul 2023 at 13:08, Scott Allen <mlxxxp@gmail.com> wrote:
If the equipment is in different rooms or on different circuits, you will need more than one, just like you would use multiple power bars.
To clarify: The need for more than one UPS is normally due to physical, location constraints. Unless all the equipment you'd like to protect would draw more power than is provided by a single 15 amp circuit, you can put it all on one UPS, as long as the power cords can all reach it. Note that you should only be considering equipment you are concerned about protecting or continuing to run during fairly short power outages. You wouldn't put appliances, or other things that aren't very susceptible to surges or noise, on a UPS. I would make a list of the devices you'd like to protect. For example, your PC and monitor, the Kurzweil reader, a TV?, maybe your internet modem/router?. From that, decide if you need more than one UPS based on their locations and power reach. Determine the current or wattage/VA that each requires. From that, along with considering how long you want the equipment to be able to continue running if there's a power failure, the proper size of the UPS(s) can be figured out. In many cases, the time that the equipment needs to run during a power failure doesn't have to be very long. Just enough time (with some margin) to be able to properly and safely shut the equipment down, then you wait out the power outage before turning everything back on. If you actually want to be able to continue using the equipment for some time during a power failure, then a more expensive UPS with a larger battery may be required for it. -- Scott