APC
UPS Sizing Tools
by DougR on Nov.20, 2008, under APC, Best Practices, General, Hardware, Powerware
UPS sizing can be confusing to say the least. Starting with Volts, Amps, Watts then converting to kVA and adjusting for longer hold over times, it may take a Math major to get correct. Volts are easy, most systems in the SMB space are 120V and some Enterprises mix in some 220V for efficiency. Amps are a bit more confusing. Read more for links to configuration tools..
