Some Outlets Are Reading "open Ground" - Electrical - DIY Chatroom Home Improvement Forum

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Old 06-08-2008, 10:51 AM   #1
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Some outlets are reading "open ground"

When I used the circuit tester to check my house's circuit, it reads on a couple of the outlets "open ground." There is no third wire ground on the wiring. Only a hot and a neutral. What does that mean and how do I go about fixing that?

But all the others in the house are okay and read correct. The house was built in the 1950s. About 10 years ago, I had the fuse box upgraded to a circuit breaker box. Any help would be appreciated.


Last edited by proofer; 06-08-2008 at 11:12 AM. Reason: I added a bit more information.
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Old 06-08-2008, 11:17 AM   #2
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This means that the ground wire isn't attached. In a case where there's no ground wire, these receptacles should be replaced with a gfci receptacle or be fed from one. It should then be marked "no equipment ground" and if fed from a GFCI should also be marked "gfci protected".
Please don't do this


Last edited by wirenut1110; 06-08-2008 at 11:21 AM.
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Old 06-08-2008, 12:46 PM   #3
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Originally Posted by wirenut1110 View Post
Yeesh. That's scary.

Here's another thing to consider. If these receptacles are in steel boxes that are fed with either emt or BX cable, we could be looking at a poor/loose connection between the cable armor/conduit and the box connector. With conduit, I've seen instances where a loose locknut could be enough to break the bond (and once the plaster ring is on, they can be a bee-ahtch to get at with a tool).
Well, now, there's what's right and what's right and never the twain shall meet.
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