Tracing Non-Metallic Pipes And Conduits; Tracing Shielded Wires - Amprobe AT-6000 Manual De Uso

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4. SPECIAL APPLICATIONS

4.5 Tracing Non-Metallic Pipes and Conduits

The Transmitter can indirectly trace plastic conduits and pipes using the following steps:
1. Insert fish tape or wire inside the conduit.
2. Connect the Transmitter with the red test lead to the fish tape and the green ground
wire to a separate ground (see wire tracing section 3.1 for further set-up instructions).
3. Set the Receiver to Quick Scan or Precision Tracing modes to trace the conduit.
4. The Receiver will pick up the signal conducted by the fish tape or wire through the conduit.

4.6 Tracing Shielded Wires

Shielded wire prevents the Receiver from detecting a tracing signal when following the
standard user instructions. To effectively trace shielded wire, follow these procedures.
If shielded wire is grounded at the far-end:
1. Setup Transmitter in Loop mode by pressing HIGH button for two seconds. Verify that
the Loop LED is ON.
2. Disconnect the ground on the near-end of the shielded wire and connect the shield to
one of the terminals of the Transmitter (polarity does not matter) with a test lead.
3. Connect the second output of the Transmitter to a separate ground.
4. Set the Receiver to a wire tracing mode to trace the shield (refer to section 3.1).
Figure 4.6a: Tracing a shielded wire grounded at the far-end
If shielded wire is disconnected from ground at the far-end:
1. Set the Transmitter to a wire tracing mode (see section 3.1).
2. Disconnect the ground on the near-end of the shielded wire and connect the shield to
one of the terminals of the Transmitter (polarity does not matter) with a test lead.
3. Connect the second output of the Transmitter to a separate ground.
4. Set the Receiver to a wire tracing mode to trace the shield.
Figure 4.6b: Tracing a shielded wire disconnected from the ground at far-end
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