Cable sheath corrosion causes and mitigation

The causes and mitigation of telephone cable sheath corrosion are dealt with in this paper, which describes particularly a method of applying a counter potential to the cable sheath for the mitigation of corrosion from localized currents. This method, although not new, has had but limited application. It may find extensive future use for controlling corrosion on intercity toll cables, and in localities where street railways have been abandoned. In addition to a unique application of this method, there is also described the method of correcting by current drainage a particularly bad case of corrosion from stray current.