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Electrical Contains discussions about electrical systems. This includes outlets, panels, wiring, et cetera.

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  #1  
Old 6/3/09, 2:44 AM
George F. Fransway George F. Fransway is offline
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Default GFCI tester question

Today I completed an inspection and when plugging the gfci tester into a 3 prong outlet all three lights were lit? The center light was the brightest, and the outer lights were glowing noticably. There is not code on the tester explaining what the hell this means, reverse polarity, open ground and open nuetral? Has anyone ever seen this? George
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  #2  
Old 6/3/09, 8:40 AM
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Michael Roberson Michael Roberson is offline
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Default Re: GFCI tester question

Testers vary from model to model. If I came across this, I would have gotten out my testing meter, possibly something funky with the voltage?
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Old 6/3/09, 10:16 AM
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Mark A. Timpani Mark A. Timpani is offline
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Default Re: GFCI tester question

I have seen this in Tucson also. Don't know the answer.




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Old 6/3/09, 1:08 PM
Mark Thorman Mark Thorman is offline
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Default Re: GFCI tester question

I found this once. Someone removed the 240v outlet for an a/c and installed a 120v rated outlet but still wired it 240v.

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Old 6/3/09, 2:47 PM
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Default Re: GFCI tester question

Thats why it pays to carry a standard voltage tester and multi meter.
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  #6  
Old 6/3/09, 5:45 PM
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Bruce A. King Bruce A. King is offline
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Default Re: GFCI tester question

The only way to get all 3 lights to light is with voltage on the neutral.

Could be 120V from neutral to ground and 240V from neutral to hot.



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  #7  
Old 6/3/09, 5:56 PM
Larry D. Kage Larry D. Kage is offline
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Default Re: GFCI tester question

Quote:
Originally Posted by bking View Post
The only way to get all 3 lights to light is with voltage on the neutral.

Could be 120V from neutral to ground and 240V from neutral to hot.
That's what I've found, too.



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  #8  
Old 6/3/09, 5:58 PM
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David P. Valley David P. Valley is offline
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Default Re: GFCI tester question

Whatever it is, it's not right.
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  #9  
Old 6/3/09, 6:52 PM
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David C. Macy David C. Macy is offline
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Default Re: GFCI tester question

Brings back memories of a recent inspection.

Open ground, Open ground, Reverse polarity, Reverse Polarity, False Ground,

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  #10  
Old 6/3/09, 7:57 PM
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William Thacker William Thacker is offline
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Default Re: GFCI tester question

was it on a dimmer? I have seen this before. I plug in a lamp if there is one available and see if the outlet behaves as expected. It does not take much to get that condition and the neutral is supposed to carry current back to the panel. If no dimmer, a poor neutral connection may exhibit unusual indications.

Last edited by wthacker; 6/3/09 at 8:08 PM..
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