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Originally Posted by smk Well, I heard that surge protectors don't work unless there is a ground, which would mean that thousands of dollars worth of equipment could be ruined with a single jolt of bad luck... |
That's true for the most part. Surge protectors work best when there is a ground, but a good surge protector will have MOV's across the 120V line, from the Hot(Black) to ground and the Neutral to ground. So that no matter where the surge or lightning hit exists it will be dissipated or shunted to ground, or if its a straight power surge across the 120V line the MOV across it will take care of it. Simply put they have several MOV's strapped across all possible entries. Yes for the best protection a grounded outlet will be needed. This is a problem in a lot of older buildings as well, night clubs ect...There are other problems that can exist on the power lines such as harmonic currents from other equipment on the same circuit..Not trying to scare you...