Triplett Fox & Hound 3 – PN: 3397 - Manual (Page 37)

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8.1.4.5: Power Wires:
The FOX and HOUND 3 cannot trace or identify “live” power
wires. To use a FOX and HOUND 3 to trace a power wire,
power must be removed from the wire, and all loads must
be removed from the wire. This may be as simple as turning
the circuit breaker off, and turning off all of the loads.
NM-B (Non-Metallic wires, sometimes called “Romex”) can
be traced by putting one clip of the FOX on the ground or
neutral, and the other clip on the hot wire. Trace the wires
using a HOUND 3 in the usual manner.
If the target wires are in a metal conduit, they cannot be
traced until they emerge from the conduit.
To identify the wires, if using the floating method, momen-
tarily short the suspected wires together while listening to
the FOX signal with the HOUND 3. Warning, take care not to
short together live wires! If the FOX signal is completely
killed (not heard on the HOUND 3), the selected wires are
probably the target pair. If the signal is not completely killed,
the wrong wires have been selected, or there is an open fault
in the wires, and crosstalk is being picked up from the other
wires.
To identify the wires, if using the grounded method, mo-
mentarily short the suspected wire to ground while listening
to the FOX signal with the HOUND 3. Warning, take care not
to short together live wires! If the FOX signal is completely
killed (not heard on the HOUND 3), the selected wire is prob-