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Old 03-07-2012, 01:23 PM   #16
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Screw into wiring


If the wire is nicked, I personally would not feel comfortable taping it and sealing the wall up. I like using the nearest outlet as a junction box. Maybe note on the back of the outlet cover with a sharpie why the splice is there and where the wires go.....

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Old 03-07-2012, 02:05 PM   #17
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Brian.....your asking some good questions....

I have a lot more electrical experience with control systems vs residential.....in what I do, the less connections, the better.

With that said....wire nuts have proven to be very reliable.....but as noted above, they have to be placed an an accessable box.

Just how nicked is that ground wire? If the nick is less than 25% (leaving 75% or more of the wire intact), I would not worry about it....the ground is not a current carrying conductor....and once it's all patched up...it's not going to be moving.

What Yoyizit was suggesting is a good way to protect the wires once they are taped.....

But this is just my opinion....all disclaimers noted.....
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Old 03-07-2012, 03:21 PM   #18
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If you tripped the breaker when you inserted the screw, you broke the insulation of the hot wire and made contact with the ground.

Forget about tapping and repair it properly.

A nicked wire will overheat without much load.
The electrons flow on the surface of the wire.
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Old 03-07-2012, 04:13 PM   #19
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Another point of view.... Be Honest, If you opened up a wall in your house and found the same thing as done by a previous owner (broken insulation, taped up, nicked ground, repair completely inaccessible) would you be annoyed?
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Old 03-07-2012, 04:16 PM   #20
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Quote:
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Another point of view.... Be Honest, If you opened up a wall in your house and found the same thing as done by a previous owner (broken insulation, taped up, nicked ground, repair completely inaccessible) would you be annoyed?
Good point....but then again, I think I would be more annoyed with junction boxes with no use.....other than to splice wires.....

Makes you wonder why they make splice kits for underground wires.....
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Old 03-08-2012, 08:50 AM   #21
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Jb is right - there is no way you didn't break through the insulation on the hot wire. The only way a screw would cause a breaker trip is a short between the hot and either the neutral or ground.

Do not tape it, you are asking for a disaster.
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Old 03-08-2012, 10:54 AM   #22
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If your nearest outlet boxes are large enough to handle the wires (box fill) then I would be using them as junction boxes. But I would however note it on the back of the receptacle cover plates as well as at the panel, with the circuit in question.

When you have two different circuits sharing the same box the grounds must be tied together (unless it is an isolated ground circuit, which yours is not).
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Old 03-08-2012, 05:05 PM   #23
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Thanks for the replies, they have helped a lot.....

Yes, I'd be a bit peaved if I came across a patch like this and I actually have came across similar things as it used to be common with knob & tube, like my house had some of....

Still not sure the wire nut is safer than leaving an unhurt wire, I can't be 100% certain, it didn't take a nick out of the hot, so I think I'll likely re-run some new wire and use the the j-box for the outlet. Thanks for sharing about the grounding, didn't realize that. I'll also try to remember to mark the cover, I have actually been trying to label everything I've touched over the years, as it does help later on.

If anyone else has anything to add, I'll be sure to pay attention, otherwise, thanks again!!
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Old 03-08-2012, 06:47 PM   #24
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They make a concealable splice kit for romex, similar to the underground splices.

http://www.amazon.com/Tyco-Electroni.../dp/B0035L12KS
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Old 03-09-2012, 04:38 AM   #25
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Quote:
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They make a concealable splice kit for romex, similar to the underground splices.

http://www.amazon.com/Tyco-Electroni.../dp/B0035L12KS

To some small extent, I feel vindicated....thanks Techy...

With that said....while I agree with doing things right.....in this case, it was a simple screw point going through the insulation and making contact with the hot conductor...

In the 'real world', it is common to take ones meter probes with their sharp points and push them through the insulation to make voltage measurements...the insulation is resiliant enough to close up the hole and effectively seal the wire....

This is what most likely happened to the OP....hence, some tape is more than enough to make it very safe....

Sorry...but some of the 'opinions' above sound to me to be about par to "You have an oil leak. We have to replace the engine to fix it."
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Old 03-09-2012, 06:26 AM   #26
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Quote:
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I can't be 100% certain, it didn't take a nick out of the hot
If your breaker tripped, you can be 100% certain that you DID take a nick out of the hot.
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Old 03-09-2012, 08:19 AM   #27
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Last edited by silversport; 03-09-2012 at 09:31 AM.
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