With certain models of cable detectors you can locate open power cables, either live or without current, up to 300V. Cable detectors can locate cables, circuits, short circuits and ground. To perform these functions, it is not necessary to disconnect electrically sensitive devices or to disconnect the power to the cable being tested. Cable detectors can also locate ferrous and non-ferrous metals, wood and plastic with a level of accuracy. These cable detectors provide a safe way to test wall sockets for which no plans or information is available about the cables and their output; cable detectors are also very viable in that they allow for quick and safe when holes are required to be made in walls, ceilings and floors