Why the metal chain is hot no matter whether the switch is on or off


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Old 12-27-14, 03:48 PM
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Why the metal chain is hot no matter whether the switch is on or off

Hello all,

I have purchased Cooper Wiring Devices 659 pull chain light fixture.
After installation, I found that the tip of the metal chain always is hot.

http://www.amazon.com/Cooper-Wiring-...+light+fixture

Is this normal or the switch is malfunction?
In the picture, where the yellow tape is shown, I can always detect the chain is hot. I assume that my installation is correct. The hot(black) is connected to the brown and the neutral(white) is connected to the silver connector. Also, I have confirmed that the black wire is hot and the white wire is neutral.

Thank you
 
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Old 12-27-14, 03:57 PM
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A malfunction or manufacturing defect somewhere.

Somehow the framework which includes the chain is shorted to aka has a fault to the hot terminal.

The framework should not be interconnected with either the socket shell (which should be neutral) or the socket bottom tab (which should connect to the hot feed line). Once in awhile misshapen metal components result in a fault.
 

Last edited by AllanJ; 12-27-14 at 04:14 PM.
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Old 12-27-14, 04:02 PM
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Your wiring looks okay. The chain shouldn't be hot. Is the porcelain hot too or the socket?
 
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Old 12-27-14, 04:11 PM
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Hello all,

The socket shell is NOT hot which should be connected to the neutral.
The socket bottom tab is hot ONLY when the switch is turned on.

So I assume this is a defective fixture.

Thank you
 
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Old 12-27-14, 04:15 PM
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Also double check to be sure the wires don't stick out beyond the screws and touch other metal parts.
 
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Old 12-27-14, 04:18 PM
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My porcelain is NOT hot.
I checked my neighbor's fixture( a different model). His chain is hot ONLY if the switch is ON.

Thank you
-Danyu
 
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Old 12-27-14, 04:43 PM
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His chain is hot ONLY if the switch is ON
Are you talking temperature?? I hope you are not saying the chain has voltage.

I want to say the chain is heating due to it being so close to the bulb.
If I'm wrong and the chain is carrying current, get rid of it asap.
 
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Old 12-27-14, 05:54 PM
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Hello all,

I have purchased a different style pull chain light fixture and it still shows hot.

Here is the real issue behind the reported problems:

I have used GreenLee Non-Contact Voltage Detector GT-12.

DETECTOR,VOLTAGE NON-CONTACT (GT-12A) - Greenlee - Made for the Tradeā„¢ 783310008903

When I use the probe to contact the chain, the detector beeps and I assume it is HOT. But I am wrong here. I have used the multimeter which tests the voltage difference between the socket shell and the chain. It is 0V.

So I think the detector is too sensitive and next time I must confirm with a multimeter.

Thank you all!
 
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Old 12-27-14, 06:03 PM
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I'd go with the multimeter too. The chain shouldn't be hot, (temperature) unless it's close to the bulb.
 
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Old 12-27-14, 06:16 PM
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I have used GreenLee Non-Contact Voltage Detector GT-12.
That's your problem! Non-contact testers frequently give bad test results and cannot be used for troubleshooting. You can verify by testing the chain for voltage with a real meter, but I can tell that you have no problem.
 
 

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