GG1 Electric

A GG1 locomotive is 79 feet 6 inches long and weighs 475,000 pounds. The frame of the locomotive was formed from two bridge-like trusses joined together with ball and socket joint. The body rested on the frame and was clad in welded steel plates. The two cabs are in the middle of the locomotive, situated for greater crew safety in the event of a collision. A pantograph mounted on each end the locomotive body was used to collect the 25 Hertz, 11,000 volt alternating current (AC) from the overhead lines. Transformers located between the two cabs stepped down the 11,000 volts to the voltages needed for the traction motors and other electrical equipment on the engine.