Tracing Wires In Metal Conduit: Junction Box Method; Tracing Non-Metallic Pipes And Conduits - Amprobe AT-8000 Serie Manual De Usuario

4. SPECIAL APPLICATIONS

4.4 Tracing Wires in Metal Conduit: Junction Box Method

The AT-8000-R Receiver will not be able to pick up the signal from the wire through the
metal conduit. The metal conduit will completely shield the tracing signal.
Note: The Receiver will be able to detect wires in non-metallic conduit. For these
applications follow general tracing guidelines.
In order to trace wires in conduit:
1. Use either Energized or De-energized TIP SENSOR mode as described in sections 3.1 and 3.2.
2. Open junction boxes and use the Receiver's Tip Sensor to detect which wire in the
junction box is carrying the signal.
3. Move from junction box to junction box to follow the path of the wire.
Note: Applying signal directly to the conduit will send signal through all the conduit
branches making tracing of one particular conduit path not possible.

4.5 Tracing Non-Metallic Pipes and Conduits

The AT-8000 can indirectly trace plastic conduits and pipes using the following steps:
1. Insert conductive fish tape or wire inside the conduit.
2. Connect the Transmitter's red test lead to the fish tape and the green ground wire to a
separate ground as described in section 3.2.
3. Set the Receiver to De-energized TIP SENSOR mode to trace the conduit.
4. The Receiver will pick up the signal conducted by fish tape or wire through the conduit.
Figure 4.3: Finding a short
23