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Why is it unnecessary to disconnect a cable when using a cable locator?

  1. Because the signal is transmitted wirelessly

  2. Because the locating signal is carried on the cable shield

  3. Because the cable does not carry any current

  4. Because the cable is insulated properly

The correct answer is: Because the locating signal is carried on the cable shield

The correct choice is based on the method by which a cable locator operates. A cable locator functions by sending a locating signal through the cable shield, which allows the device to detect the cable's position underground. The shield acts as a conductor for the locating signal, making it unnecessary to disconnect the cable to find its location. This capability allows for detecting the cable without interrupting its service. While there are other reasons one might consider related to safety and function, the essential point is that the detection relies on the shield itself carrying the signal without needing to sever the connection. Disconnecting the cable could lead to unnecessary downtime or potential safety hazards, particularly if the cables are live. Understanding this principle is crucial for effective and safe cable locating practices in construction and maintenance work.