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#217027 - 04/05/16 12:50 PM Finding live buried wires?
Panterawill Offline
New Member
Registered: 03/15/16
Posts: 2
Loc: Ontario
Hey guys. Hope you can help me.
I have a home that definitely has a buried junction box in the drywall. The wires are live and are feeding a chandelier and pot lights. Some load, but not a huge amount.
Its an expensive home and I don't want to start poking holes in the drywall.
Thermal gun? I spoke to a person in the field and he said it wouldn't pick it up unless there was a massive load or bad connection creating a lot of heat.
Any suggestions for electronic tracing devices?
Thanks in advance
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#217028 - 04/05/16 02:44 PM Re: Finding live buried wires? [Re: Panterawill]
HotLine1 Offline


Member
Registered: 04/03/02
Posts: 6778
Loc: Brick, NJ USA
You may want to check this out.....

http://www.amprobe.com/Amprobe/usen/Products/Wire-Tracers.htm

I had some success with the old model back in the day. Note that I say 'some'.

Could you drop the trims in the recess fixtures??

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#217029 - 04/06/16 11:30 AM Re: Finding live buried wires? [Re: Panterawill]
ghost307 Offline
Member
Registered: 05/09/05
Posts: 900
Loc: Chicago Illinois USA
If it's a metal junction box that's buried a stud finder should have some reaction.
Generally it detects the increased density of the wood but there's a chance that it would also give some lesser indication when it encounters a metal box between studs.
Once you narrow it down you can drill a small hole and look inside the wall with a borescope to try to get the exact location.
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#217032 - 04/08/16 07:52 PM Re: Finding live buried wires? [Re: Panterawill]
Trumpy Offline


Member
Registered: 07/05/02
Posts: 8211
Loc: SI,New Zealand
I had a job that was very similar to this some years back.
Not wanting to buy a proper metal detector, I made up a small oscillator that had a coil of wire on a plastic former attached to it, after some initial workshop testing, I took out to the job, long story short, it took a matter of seconds to find the offending joint.
It's pretty poor form joining stuff in a wall though, all the same.
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#217035 - 04/10/16 05:48 AM Re: Finding live buried wires? [Re: Panterawill]
Texas_Ranger Offline
Member
Registered: 12/17/01
Posts: 2391
Loc: Vienna, Austria
I love my tone tracer! It even works with wires inside Bergmann conduit (Orangeburg pipe with a thin outer coating of sheet metal, not earthed) in plastered brick walls. I only have a rather inexpensive one, 85 Euros. Allowed me to spot a buried splice +/- 1 cm! Some moron moved a door (and light switch) by just splicing new wires to the old cloth-covered ones and plastering over the old switch box. I found the splice, patched in a new section of flex conduit instead of the box, pulled new wires through the now complete conduit run and that was it.
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#217083 - 04/30/16 06:02 PM Re: Finding live buried wires? [Re: Panterawill]
lesk Offline
New Member
Registered: 01/18/16
Posts: 2
Loc: new jersey
Yes the Amp detector worked well for me
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#217090 - 05/01/16 03:29 PM Re: Finding live buried wires? [Re: Panterawill]
HotLine1 Offline


Member
Registered: 04/03/02
Posts: 6778
Loc: Brick, NJ USA
lesk
Welcome to ECN from another Jersey guy....
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