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Old 02-14-2013, 10:06 PM   #1
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Appropriate junction box for exposed Knob and Tube


Hey guys, my rental was recently inspected and the inspector pointed out a hot knob and tube line in the attic that was basically just hanging in space. Obviously this has to be secured, and he recommended I pickup a junction box to secure it in and he will re-inspect it in a month.

What type of junction box should I use? Plastic, metal, fiberglass? Does it matter? I have plenty of old plastic wall boxes..would these suffice if I put a cover on them? Also, what should I wrap the exposed end in? standard wire nuts? If there is a hot line exposed, can it go in the same box using a different wire nut?

Obviously I don't want a fire hazard (more than what k&t is already) but $6,000 to rewire isn't in the cards right now.
Thanks for your help guys!

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Old 02-14-2013, 10:14 PM   #2
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I find it surprising that an unused line would be left live. Can you post some photos?
If it really is a random live wire, you can pretty much use any box, just make sure the wire is protected. (Metal boxes require bushings/clamps in the knockouts). You can put wire nuts on the end of the wires and put a cover on the box.

As always, make sure you turn off the fuse/breaker feeding it before you do anything.

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Last edited by Kyle_in_rure; 02-14-2013 at 10:20 PM.
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Old 02-14-2013, 10:18 PM   #3
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thanks for responding kyle. I will be over there again tomorrow as I have another electrician coming in to give me a price on upgrading the wiring and I will take a picture...
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Old 02-14-2013, 10:24 PM   #4
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Quote:
Originally Posted by quaker87 View Post
thanks for responding kyle. I will be over there again tomorrow as I have another electrician coming in to give me a price on upgrading the wiring and I will take a picture...
You may want to check my post again, when I first responded I misread your post, so I had to edit.
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Old 02-15-2013, 07:27 AM   #5
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You could also cut it off at the last junction point.
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Answers based on the National Electrical Code. Local amendments may apply. Check with your local building officials.
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Old 02-15-2013, 08:32 AM   #6
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I would trace the wire back and cut it off at the nearest junction.

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