Triplett Hound 3 – PN: 3392 - Manual (Page 27)

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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 or FOX 2 on the
ground or neutral, and the other clip on the hot wire. If us-
ing a FOX 2 and it starts beeping, remove it from the wires
immediately. The wires are live. Remove the power source.
Reconnect the FOX 2. Trace the wires using the 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 a FOX 2, momentarily short
the suspect wires together to active True Trace, and listen
for the cadence change. If it changes, you’ve found the tar-
get pair. If no change occurs, keep searching. Warning, take
care not to short together live wires! If this is a possibility,
the user may wish to use a light bulb to activate True Trace.
Simply connect a 120VAC incandescent bulb (any wattage)
across the wires. If the bulb lights, the line is live. If the
cadence changes, the target wire has been located. If noth-
ing happens, keep searching.
An adapter with a standard lightbulb base and clip leads can
often be purchased at a local hardware store.