In case your voltage degrees are unstable (ie: power stays on, but the actual voltage degree varies a good deal within the 220V typical), then I think that's the sort of state of affairs in which an AVR is useful. In case you have a sizable office with a number https://bangkokwax88890.arwebo.com/56430523/how-uninterruptible-power-supply-can-save-you-time-stress-and-money