ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat Box
Recent Posts
Kichler Lighting Recalls Pendant Lights
by Admin - 09/18/19 08:47 PM
Does a 'normal 3ph-AC motor' include capacitors?
by gfretwell - 09/18/19 01:20 AM
Another weird NEC code question on Feeder Taps
by gfretwell - 09/18/19 01:14 AM
NEC 2017_392.22(B)(1)(b)
_What's the smallest width

by Bill Addiss - 09/17/19 07:13 PM
NEC Question_Cord-&-Plug EGC shorter then Neutral
by pcsailor - 09/16/19 05:26 AM
New in the Gallery:
What is this for?
Plug terminals
Who's Online Now
2 registered members (Admin, gfretwell), 11 guests, and 11 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Finding live buried wires? #217027 04/05/16 03:50 PM
Joined: Mar 2016
Posts: 2
P
Panterawill Offline OP
New Member
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

Work Gear for Electricians and the Trades
Re: Finding live buried wires? [Re: Panterawill] #217028 04/05/16 05:44 PM
Joined: Apr 2002
Posts: 7,111
HotLine1 Offline
Member
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??



John
Re: Finding live buried wires? [Re: Panterawill] #217029 04/06/16 02:30 PM
Joined: May 2005
Posts: 984
G
ghost307 Offline
Member
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.


Ghost307
Re: Finding live buried wires? [Re: Panterawill] #217032 04/08/16 10:52 PM
Joined: Jul 2002
Posts: 8,262
Trumpy Offline
Member
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.

Re: Finding live buried wires? [Re: Panterawill] #217035 04/10/16 08:48 AM
Joined: Dec 2001
Posts: 2,455
T
Texas_Ranger Offline
Member
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.

Re: Finding live buried wires? [Re: Panterawill] #217083 04/30/16 09:02 PM
Joined: Jan 2016
Posts: 2
L
lesk Offline
New Member
Yes the Amp detector worked well for me

Re: Finding live buried wires? [Re: Panterawill] #217090 05/01/16 06:29 PM
Joined: Apr 2002
Posts: 7,111
HotLine1 Offline
Member
lesk
Welcome to ECN from another Jersey guy....


John

Featured:

2020 National Electrical Code
2020 National Electrical
Code (NEC)

* * * * * * *

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
Bill Addiss
Bill Addiss
NY, USA
Posts: 3,923
Joined: October 2000
Show All Member Profiles 
Top Posters(30 Days)
Admin 6
Popular Topics(Views)
258,626 Are you busy
194,220 Re: Forum
183,690 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.3