Surge Protector and a UPS?

Author: Dave Norwood

Is it OK to plug a surge protector into a UPS?  We have had several clients ask this question.  The easy answer is, “No.”  The output of a UPS is usually a square wave and not a sine wave. Surge protector circuits are designed for a sine wave input creating a mismatch. Even in rare case that the surge protector is designed for a square wave, it’s best not to do it. Continue reading