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of the signal into other wires in the cable. If the user
is trying to identify a cable, and not an individual
conductor in the cable, the LINE/GROUND method
usually produces the best results. This method has
been used to trace electrical wires (like Romex),
speaker wires, intercom wires, thermostat wires,
alarm wires, cable television wires, etc. through
drywall, wood flooring, and carpeting.
A “good” earth ground is usually not required. In
fact, a large metal object like an office desk, a file
cabinet, or a metal plate on the floor, can be used.
On vehicles, the metal chassis of the vehicle can
be used as the ground. A metal hulled boat can
use the hull as a ground, and a wood or fiberglass
hulled boat can use the surrounding water as a
ground (make connection to a metal fitting in
contact with the water or drop a wire into the
water). The ground connection is only required
at the FOX Jr end of the cable or wire, however,
a ground connection at the far end is handy for
identification of the target wire (read following
text on tracing).
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