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locating buried wires #30921 11/02/03 10:06 PM
Joined: Mar 2003
Posts: 10
T
Tim Peters Offline OP
Member
I'm trying to locate a burried wire. Its just some 12-2 uf wire. No trench tape, and my inductive amplifier is not strong enough.

Anyboady got a better method? I know there is another way but dont know how.

Work Gear for Electricians and the Trades
Re: locating buried wires #30922 11/03/03 06:17 AM
Joined: Sep 2003
Posts: 60
G
gunther Offline
Member
This may sound a little crazy but I have seen it before with results so if anybody has any comments or experiences, let me know. We used to take two pieces of number twelve wire about a foot and a half long and bend a couple of inches on the end at ninety degrees. Then walk across the area you think it might be in and hold the wires in each hand loosely. When the wires moved in together towards each other then we dug straight down and there would be the pipe with the wires. Saw it a couple of times and it seemed to work. Something about magnetic fields? Try to stop laughing ok? Kinda on the same principle that people who search for the right spot to drill water wells. Kooky?

Re: locating buried wires #30923 11/03/03 06:23 AM
Joined: Jan 2003
Posts: 4,391
I
iwire Offline
Moderator
If you have no luck "witching" for the wire, I would suggest seeing if you can rent a underground cable locater.

We have one and have good luck with it.

I have used it to find the far end of empty PVCs that had been installed during an earlier construction project but no one new where.

I pushed a 1/4" snake into the PVC and hooked the signal generator to that.

Worked great saved a lot of digging.


Bob Badger
Construction & Maintenance Electrician
Massachusetts
Re: locating buried wires #30924 11/03/03 07:40 AM
Joined: Dec 2000
Posts: 4,286
electure Offline
Member
I don't remember exactly how this worked, but another member previously mentioned this unorthodox method in a similar thread:
I have never done this, nor do I plan to ever do it
Disconnect a spark plug wire from the truck (w/ engine off [Linked Image]).
Run a jumper to the UG wire (be sure to disconnect all the other connections to the UG wiring)
Start truck, and walk along with an AM radio that's tuned off of any channels. The "ticking" will be picked up by the radio, and will be louder the closer you get to the UG wire.

Re: locating buried wires #30925 11/03/03 09:08 AM
Joined: Aug 2003
Posts: 1,374
R
Ryan_J Offline
Moderator
Gunther: I didn't want to be the first to post about "witching", but I've been there and done it...it works!


Ryan Jackson,
Salt Lake City
Re: locating buried wires #30926 11/03/03 10:52 AM
Joined: Nov 2000
Posts: 2,148
R
resqcapt19 Offline
Member
Ryan,
But not everyone can make it work.
Don


Don(resqcapt19)
Re: locating buried wires #30927 11/03/03 01:08 PM
Joined: Aug 2003
Posts: 1,374
R
Ryan_J Offline
Moderator
Very Very true! :-P


Ryan Jackson,
Salt Lake City

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