Watts and Volt-Amps - Powerful Confusion
Source: APC by Schneider Electric
This note helps explain the differences between Watts and VA and explains how the terms are correctly and incorrectly used in specifying power protection equipment. Many people are confused about the distinction between the watt and volt-amp measures for UPS load sizing. Many manufacturers of UPS and load equipment add to this confusion by failing to distinguish between these measures. With this resource learn the difference of watts and VA and the impacts on your UPS system.