Surge protectors causing current in external ports

xmark123

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As the title says, surge protectors cause current to flow in USB ports, the ethernet port, etc. When I tried to insert a disc in my external disc drive I touched the metal part in the middle (the spinning part) and got shocked. So I tried connecting my computer directly to the outlet and the problem was fixed. I bought another surge protector and the problem persists. WTF? The very irony though.. Can anyone explain why this is happening? Thank you in advance.
 

xmark123

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I mentioned in the opening post (OP?) that the problem disappeared when I connected the PC directly to the outlet. Current only flows through the ports when either of the surge protectors are connected.
 

westom

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An effective surge protector works by connecting a surge current to earth ground. That is completely and electrically different from the human safety ground in a wall receptacle. Human safety ground means no electricity should be felt in any part.

Shocks would be due to a defective safety ground. That receptacle tester can only report some safety ground defects - cannot report something as good. Apparently a surge protector, that does not claim to protect from destructive surges (ie no earth ground), has also compromised a human safety ground.
 

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