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Re: OT: Tracing an electrical line
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Posted by John T on October 03, 2005 at 07:03:27 from (66.244.90.98):
In Reply to: OT: Tracing an electrical line posted by wirehair on October 03, 2005 at 04:54:19:
I think Ive seen a non contact electrical test device at some home or elecrical supply house a while back that lit up when in the proximity of AC voltage, it must detect the electromagnetic field. So long as the feeder were hot out of the panel such a device might locate it if close enough to the walls or ceiling etc. If you know what circuit that receptacle is on fed from you breaker box you could disconnect it there and ohm out the conductors to see if any wires are showing high (or low even) resistance continuity to other conductors. Even a high resistance short should cause the GFCI to trip out as I think they drop out at something like only 5 milliamps of current imbalance between the hot and neutral. However, the GFCI should also drop out even if there were no hot to neutral shorts discussed above but a short to the trailers metal frame as the result would still be an imbalance in the hot and neutral current flows. I would ohm out the conductors as thats cheap n easy (but even if they pass there may still be a short elsewhere) and then purchase one of those AC Voltage detectors if you need to locate where the wire is. Have you checked the GFCI elsewhere to be sure its okay and dont trip out any old place????????? John T, retired electrical engineer
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