Electric cables

The subject of electric cables, in its entirety, is so broad that several papers would be necessary to do it full justice. Much could be written about the material entering into the construction of cables, much about the manufacture of cables, and a great deal about the testing and installation of cables. A description of the different kinds of cable and the use for which they are intended would of itself be enough for one paper. In addition to all this, the subject of cable data such as would be of interest or benefit to operators or consulting engineers covers a large and only partly explored field. Under this heading may be mentioned tests to determine the eddy current losses in the conductors and lead covers of various sized cables transmitting alternating currents, variation of impedances of armored cables and of ordinary cables with and without the lead covers connected at each end, dielectric losses, current carrying capacities, etc.