The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
Sprinklered equipment 26-008
by bigpapa
12/02/16 04:24 PM
On Delay Relay with Auto Reset
by Potseal
12/01/16 09:59 AM
Wow, that was close!
by jraef
11/28/16 07:06 PM
Earthquake in New Zeeland
by RODALCO
11/27/16 11:25 PM
Calling all Non-US members!! (Non-US only)
by Tjia1981
11/27/16 06:33 AM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 13
HotLine1 9
Texas_Ranger 8
sparkyinak 7
Trumpy 6
Who's Online
1 registered (sparkyinak), 245 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#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

Top
Work Gear for Electricians and the Trades

Work Gear for Electricians and the Trades
Work Gear for Electricians and the Trades
Arc Flash Clothing, Gloves, KneePads, Tool Belts, Pouches, Tool Carriers, etc. etc....

#217028 - 04/05/16 02:44 PM Re: Finding live buried wires? [Re: Panterawill]
HotLine1 Offline

Member

Registered: 04/03/02
Posts: 6804
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??
_________________________
John

Top
#217029 - 04/06/16 11:30 AM Re: Finding live buried wires? [Re: Panterawill]
ghost307 Offline
Member

Registered: 05/09/05
Posts: 884
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.
_________________________
Ghost307

Top
#217032 - 04/08/16 07:52 PM Re: Finding live buried wires? [Re: Panterawill]
Trumpy Offline

Member

Registered: 07/05/02
Posts: 8540
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.
_________________________
Let's face it, these days if you're not young, you're old - Red Green grin

Top
#217035 - 04/10/16 05:48 AM Re: Finding live buried wires? [Re: Panterawill]
Texas_Ranger Offline
Member

Registered: 12/17/01
Posts: 2343
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.

Top
#217083 - 04/30/16 06:02 PM Re: Finding live buried wires? [Re: Panterawill]
lesk Offline
New Member

Registered: 01/18/16
Posts: 1
Loc: new jersey
Yes the Amp detector worked well for me

Top
#217090 - 05/01/16 03:29 PM Re: Finding live buried wires? [Re: Panterawill]
HotLine1 Offline

Member

Registered: 04/03/02
Posts: 6804
Loc: Brick, NJ USA
lesk
Welcome to ECN from another Jersey guy....
_________________________
John

Top



ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals