For the induction method, which statement is accurate?

• A. It uses a direct wire connection to the target line.
• B. It uses the transmitter on the surface to induce a signal on the target line.
• C. It uses a clamp around the line to induce a signal.
• D. It cannot be used for cable identification.

Answer: (C)

Induction uses magnetic coupling to energize the target line without a direct electrical connection. By placing a clamp around the conductor and energizing through that clamp, the transmitter induces a signal onto the line. The receiver on the surface then detects the signal along the buried path, allowing you to trace and identify the cable without opening the circuit or making a direct connection. This non-contact method is especially useful when you can’t access the conductor directly, and it’s the clamp that makes the inductive coupling possible. The other options describe different approaches (directly tying into the line, or relying on surface-only setup) and don’t capture the essential clamp-on inductive process. Also, this method can indeed be used to locate or identify cables, so claiming it cannot would be inaccurate.