Finding Shorts - Amprobe AT-7020 User Manual

4. SPECIAL APPLICATIONS
Trace the wire by moving
receiver back and forth at
1ft/sec

4.3 Finding Shorts

Shorted wires will cause a breaker to trip. Disconnect the
wires, and make sure the ends of the wires on both sides
of the cable are isolated from each other and other wires
or loads.
Interconnect ten (10) 9V batteries in series, by connecting
negative "-"contact of one battery to the positive "+" on
the other one. The 10 batteries will create safe 90V DC
power source.
Connect the circuit as shown in the illustration below.
Setup the receiver to Energized TIP SENSOR mode. Start tracing the cable until you find the
location where the signal stops. To verify the place of the fault, move the transmitter to the
other end of the wire and repeat tracing from the opposite end. If the signal stops at the
exact same location you have found the place of break.
Note: This method will be affected by signal cancellation effect. Expect a very weak signal.
AT-7000-T
23
Battery Battery
9V 9V
Battery Battery
9V 9V
Battery
9V