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CookiePush t1_j6osrgb wrote

Grounding is a critical element required for proper surge protection. In regard to the question about whether surge protectors work on ungrounded outlets, the answer is “no.” Surge protection equipment typically uses components called metal oxide varistors (MOVs) to divert excess current into the ground line. An ungrounded outlet does not have this third ground wire, therefore there is no place for the surge protector to divert excess current.

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shathecomedian OP t1_j6pepkz wrote

is it possible for a two prong outlets to be grounded? i can always get a tester to see, or just ask the landlord if the wiring has been setup for ground before

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ChessLord144 t1_j6phhcw wrote

Yes. If the box is grounded either through conduit or older wiring. You can check by installing a two to three adapter, making sure to put the screw through the tab, and then use a "circuit analyzer", also called an outlet tester, to see if there is a ground.

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