![ups selection guide](https://www.powerinspired.com/wp-content/uploads/2019/01/10pointguidefeature.jpg)
10 Point Guide to UPS Selection
This 10 point guide to UPS Selection guides you through almost everything you need to know to make your ideal UPS choice.
![](https://www.powerinspired.com/wp-content/uploads/2019/06/ups_explanation_vfi_normal-1.png)
UPS Explained
An explanation of the building blocks of UPS and the different UPS topologies.
![how to calculate ups power requirement](https://www.powerinspired.com/wp-content/uploads/2017/05/kwh-meter.jpg)
How to Calculate UPS Power Requirement
How to establish the load of connected equipment and make sure your UPS is adequately sized for the application.
![How to deal with power problems / virus](https://www.powerinspired.com/wp-content/uploads/2017/08/power_virus.jpg)
Power Viruses & How to Solve Them
There are 9 recognised Power Quality Problems or Viruses. Here we look at what they are and how we can protect against them.
![USB UPS Human Interface Device](https://www.powerinspired.com/wp-content/uploads/2019/05/usb-hid.jpg)
UPS HID USB Interface
A UPS with a HID (“Human Interface Device”) USB interface is able to communicate directly with your operating system. We explain what this means here.
![RunTime](https://www.powerinspired.com/wp-content/uploads/2017/05/clock-600px.jpg)
UPS Runtime
Beware of misleading runtime information! Runtime is a factor of battery capacity and load level only. Here we explain.