Triplett Hound 3 – PN: 3392 - Manual (Page 14)

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Notice that if the HOUND 3 is moved closer to the FOX or
FOX 2, the loudness of the Tone from the speaker increases,
as does the brightness of the signal LED. This effect will
allow you to locate a wire connected to the FOX or FOX 2
leads, even when the wire is hidden in a wall or ceiling.
7.2: Wire Tracing and Finding Faults
The HOUND 3, when used in conjunction with a FOX or FOX
2, can be used to trace and locate wires in cables and in
wood frame construction. There are several common test
scenarios . . . tracing wires through walls or ceilings, trac-
ing wires in multiwire cables or harnesses, and locating
breaks in wires. In additional to obvious residential and
commercial uses, the FOXs and HOUNDs has also been used
on radio towers, in cars, boats, and even submarines.
7.2.1: General Wire Tracing Information
• “Toners and Probes” like the Triplett FOX and HOUND prod-
ucts, will not trace “live” AC or DC power wires.
• The only type of “live” circuit that the FOXs and HOUNDs
will trace is a telephone circuit.
• The FOXs tracer tone will not penetrate electrically con-
ductive materials . . . like any kind of metal or wet earth.
This means that the HOUNDs cannot pickup the tone if the
target wire is in a metal conduit or is underground. The
HOUNDs will pickup the tone at locations where the target
wire emerges from the conduit or the earth.