There have been many confusions surrounding the distinctions between the watt (W) and volt-amp (VA) measures for UPS load sizing. Many manufacturers of UPS add to this confusion by failing to distinguish between these measures. This exclusive white paper explains the differences between watts and VA and helps identify how the terms are used incorrectly in regards to specifying power protection equipment. Discover the power rating of UPS, examples where a sizing problem can occur and how to best guard against sizing errors.