that draws power from dual overheadwires (generally suspended from roadside posts) using spring-loaded trolley poles. Two wires, and two trolley poles,
Handle Hot Wires And Stay Alive" , July 1949, Popular Science basics explained on lineman safety for the general public Inter-Utility Overhead Trainers
lines with overhead wires are DC1500V overheadwires. The overheadwires is divided into overhead catenary and overhead conductor rails. Except for the earlier
has been used, employing both overhead lines and conductor rails. The two most common systems are 25 kV AC using overhead lines, and the 750 V DC third
supply on special cross beams right on the overheadwire pylons above the catenary wire. Because the overhead line pylons have a smaller cross section than