Originally Posted by rbinck

Both Online and Line-Interactive types are continous duty as far as that goes. Cost-benifit is best accomplished by the Line-Interactive, but they do allow any harmonics that may be present in the power line through the same as any power conditioner, so to completely isolate the output from the input line the Online would be the better choice.

I agree that for most urban power enviroments the Line-Interactive would be the best choice price-peformance, but in rural and dirty power areas, like near heavy industrial, the Online may be what is needed.