Triplett Fox & Hound 3 – PN: 3397 - Manual (Page 27)

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8.1.4.2: Wire Tracing Methods:
There are two basic wire tracing methods . . . “floating” and
“grounded”.
In the floating method (also called Line to Line), the tracer
tone is applied to two wires (a pair) in the cable or wire har-
ness to be tested. See Figure 4. The FOX’s red clip is con-
nected to one wire and the green clip is connected to the
other wire. This method is often used on telephone, inter-
com, or alarm wires. The floating method tends to cancel
out some of the tracer tone, so a HOUND 3 usually works
best when the user has access to the wires, and can place
the HOUND 3 right against the wires. This method identifies
the wires as a pair. It will not identify which wire is con-
nected to the FOX’s green clip or which wire is connected to
the red clip.