Electrical Power lines The BorderTransportationSystem not only will be hooked into the National and Texas Electrical Grids, but also to its Wind Turbines and Solar Panels.  The transmission lines can be on the exterior of the 'T' towers, or within each in shielded conduit.  Step up and Step down transformers will regulate the power that is supplied to the rail and monitoring systems and to towns and other users along the route. Index of ... High-voltage cable (HV cable) Shielding Of Power Cables The NEC and Installation over 600 volts