Triplett Fox 2 – PN: 3382 - Manual (Page 31)

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120VAC incandescent bulb (any wattage) across the wires.
If it lights, the line is live, if the cadence changes, the target
wire has been located, if nothing happens, keep searching.
An adapter with a standard lightbulb base and clip leads can
be purchased at your local hardware store.
Resistance Heating Wires:
The FOX 2 and a HOUND or HOUND 2 can be used to trace
the path of a resistance heating wire in a plaster wall or ceil-
ing. This is usually performed to find an open in the wire. It
is best if the user is familiar with resistance heating tech-
niques, particularly in regard to the typical patterns used for
the wire path. The wire is usually in a serpentine pattern,
with the wire spacing and orientation varying depending on
the amount of heat needed in different areas of the room.
Finding the open can be a challenge. Several techniques can
be, and should be, used.
It helps if the user performs a few experiments before trying
to find the open. (see Figure 7) Attach a few pieces of wire
(any kind) more than several feet long to each clip of the
FOX 2. Lay the wires out on a non-conducting surface (a
wood floor with no metal in the vicinity..... nails are OK, but
make sure there’s no metal furnace duct below the floor)
parallel to each other, about 4“ apart. Using a HOUND or
HOUND 2, trace along one of the wires, in normal fashion,
noting how the tracer tone becomes stronger as the wire is
approached. Now trace along the other wire, noting that it
behaves just like the previous wire. Now, slowing move the
HOUND or HOUND 2 from one wire to the other wire. Notice