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9: Detailed Information
9.1 Methods
Two different basic tracing methods are com-
monly used . . . the “LINE/GROUND” connec-
tion, and the “LINE/LINE” connection.
9.1.1 LINE/GROUND Connection
The LINE/GROUND connection produces the
strongest tracing signal, but also creates
“crosstalk” 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
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