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Originally Posted by T77911S
most UPS are not true UPS in that the load is always on commercial power and it only switches when it senses a drop in input power.
you would have to know the current, watts or Kva to determine the size of UPS needed, if it would do any good or be worth it. most UPS are in watts. I hate KVa.
not sure how long this apparent drop in fan speed last and is the drop and issue or is just that you are hearing it.
we have a couple of UPS at work that always go off when the building is on EG and someone uses the elevator.
I was having issues at my house when I first bought it. I was seeing lights dim when the AC turned on. I think it turned out to be a bad connection on the return in meter base (don't remember for sure but it was a bad connection)
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hmmmm
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