Which equipment may need to be used in conjunction with a cable avoidance tool (CAT) to detect cables?

Using a signal generator (genny) in conjunction with a cable avoidance tool (CAT) can significantly enhance the effectiveness of detecting buried cables. The CAT is designed to locate underground utilities by detecting electromagnetic fields generated by live cables. However, if cables are not energized or if they are not emitting a strong enough signal, the CAT may struggle to detect them.

By using a signal generator along with the CAT, an operator can introduce an identifiable signal onto a buried cable, even if that cable is not currently carrying power. This enables the CAT to pick up the signal generated by the genny, making the buried cable more detectable. This dual approach is often crucial in areas where utilities may be old or inactive, as it provides a reliable means to locate potential hazards.

In contrast, the other options listed do not serve a similar purpose in the detection of buried cables. A power drill does not relate to detection, a voltage meter measures electrical potential rather than locating cables, and a ground penetrator (which may refer to GPR or ground-penetrating radar) is a more advanced method that is typically used for extensive subsurface surveying rather than for routine cable location. Therefore, the combination of a CAT with a signal generator is the optimal choice for effective cable