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3. MAIN APPLICATIONS

IMPORTANT NOTICE, PLEASE READ BEFORE STARTING TRACING
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Avoiding signal cancellation problems with a separate ground connection
The signal generated by the Transmitter creates an electromagnetic field around the wire.
This field is what is detectable by the Receiver. The clearer this signal, the easier it is to trace
the wire.
If Transmitter is connected to two adjacent wires on the same circuit (for example, hot and
neutral wires on a Romax cable), the signal travels in one direction through the first wire
and then returns (in opposite direction) through the second. This causes the creation of two
electromagnetic fields around each wire with opposite direction. These opposing fields will
partially or completely cancel each other out, making wire tracing difficult if not impossible.
To avoid the cancellation effect, a separate ground connection method should be used.
The red test lead of the Transmitter should be connected to the hot wire of the circuit you
wish to trace, and the green lead to a separate ground, such as water pipe, ground stake,
metal grounded structure of the building, or outlet ground connection of an outlet on a
different circuit. It is important to understand that an acceptable separate ground is NOT
the grounding terminal of any receptacle on the same circuit as the wire you wish to trace.
If hot wire is Energized and the Transmitter is properly connected to a separate ground,
the red LED on the Transmitter will light up. The separate ground connection creates
maximum signal strength because the electromagnetic field created around the hot wire is
not being cancelled by a signal on the return path flowing along an adjacent wire (hot or
neutral) in the opposite direction, but rather through the separate ground circuit.
88
NC V
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