This is funny, I actually am wondering about plugging a surge protector into a UPS. I have some equipment (probably not very high power draw but I can confirm) conveniently zip tied to a peg board along with a power strip that I assume has a basic surge protector on it. One power cord leaves the whole thing, which is very clean, but power goes out a surprising amount here. Can I plug this whole thing into a UPS or should I find a replacement strip without a surge protector?
From what I remember reading, you should not do that. Only plug in PDUs or directly connect equipment to a UPS. You’re meant to put the surge protection before the UPS. I think it’s because the circuitry in surge protectors can mess with what the UPS thinks the actual load is.
I believe some UPS brands might also void parts of your warranty if you use them with a surge protector plugged in.
You can plug it in. The problems with the UPS being plugged into another UPS are related to the internal batteries and the inverters, not to the surge protection. Just don't plug in too many things and overload the UPS.
