Posted By: Panterawill
Finding live buried wires? - 04/05/16 07:50 PM
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
Posted By: HotLine1
Re: Finding live buried wires? - 04/05/16 09:44 PM
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??
Posted By: ghost307
Re: Finding live buried wires? - 04/06/16 06:30 PM
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.
Posted By: Trumpy
Re: Finding live buried wires? - 04/09/16 02:52 AM
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.
Posted By: Texas_Ranger
Re: Finding live buried wires? - 04/10/16 12:48 PM
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.
Posted By: lesk
Re: Finding live buried wires? - 05/01/16 01:02 AM
Yes the Amp detector worked well for me
Posted By: HotLine1
Re: Finding live buried wires? - 05/01/16 10:29 PM
Welcome to ECN from another Jersey guy....