Main Applications - Ampro AT-6010 Serie Manual De Usuario

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.
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