Re: Use metal detector as cable tracer...?


"Geir Holmavatn" <geir056@xxxxxxxxx> wrote in message
news:6nraltFh4e6U2@xxxxxxxxxxxxxxxxxxxxx
Hi,

Say I have a disconnected electrical cable dug into the ground. I need to
trace the cable to find out its route and where it ends.

I wonder if it is possible to inject a signal from a signal generator between
one of this cable's conductors and earth and walk away with a metal detector
to trace the cable.

Has anyone any experience or knowledge on this to share, and if yes, how deep
in the earth will the detector be able to trace the cable?


I had some luck using an AM radio and a signal generator that imposed an audio
tone on a RF signal in the AM band in tracking a break in a buried AC line.
(Power off) It gave me a fair idea of the route of the cable, and a hint of the
break location. Adjust the signal and radio volumes for minimum hearable signal
for more accuracy. The other hint I got was by using my DVM to measure voltage
or current from a probe stuck in the ground to a ground reference with the AC
power to the wire turned on. Where a wire has failed, there is a significant
leakage which can be picked up with the meter.


.

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