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Old 09-08-2010, 07:57 AM   #1
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electrical arc between the nail and the hammer


As I was about to pull an aluminum nail from the doorway, (nail in corner bead)
there was an electrical arch between the nail and the hammer.
I believe it is metal stud construction.
How can I track down the source? Check recepticles, ground to stud?
Shut breakers off to try to isolate? Hopefully there is not a damaged wire
in the middle of a wall.
09-14 I was on a short step stool, on laminated flooring. The arch
was approx. 1/8 inch. long. I was not touching anything else.


Last edited by ghouchin; 09-15-2010 at 08:27 PM. Reason: More information.Loose wire on wall switch
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Old 09-08-2010, 04:24 PM   #2
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electrical arc between the nail and the hammer


i would say if you have access to the metal studwork, put a meter on it and see if there is ac volts with respect to a good ground (copper water pipe, or grounded conductor). if there is voltage, then i'd shut off one cb at a time and see which branch it is on, and go from there.

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Old 09-08-2010, 07:45 PM   #3
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electrical arc between the nail and the hammer


Quote:
Originally Posted by ghouchin View Post
As I was about to pull an aluminum nail from the doorway, (nail in corner bead)
there was an electrical arch between the nail and the hammer.
I believe it is metal stud construction.
How can I track down the source? Check recepticles, ground to stud?
Shut breakers off to try to isolate? Hopefully there is not a damaged wire
in the middle of a wall.
To get an arc there has to be to things at different potential. If the nail is "hot" then the hammer had to be against something that was grounded.
If the nail is grounded then the hammer had to be against something "hot".
How big of arc did you see and did it trip a breaker or fuse?
Do you have a volt meter?
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Old 09-08-2010, 07:58 PM   #4
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electrical arc between the nail and the hammer


Quote:
Originally Posted by ghouchin View Post
As I was about to pull an aluminum nail from the doorway, (nail in corner bead)
there was an electrical arch between the nail and the hammer.
I believe it is metal stud construction.
How can I track down the source? Check recepticles, ground to stud?
Shut breakers off to try to isolate? Hopefully there is not a damaged wire
in the middle of a wall.
I've never known a nail to hold very well in a metal stud.
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Old 09-08-2010, 08:28 PM   #5
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electrical arc between the nail and the hammer


This may sound silly, but could it have been a static discharge? Does it do it every time or was it a one time thing?
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Old 09-08-2010, 10:08 PM   #6
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electrical arc between the nail and the hammer


There are some case I have see someone add a circuit or two in the doorway molding that is very spooky but for now if you have NCV { non concat voltage tester } you should able tell if that was engerized if the NCV did beep and lit up the same time that mean you may got hit with hot conductor.

But do the test as other poster mention to make sure you are not really on the 120 volt circuit but if that the case just kill it and go from there.

Merci.
Marc

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