power to six GE780 traction motors, one per axle. The locomotive is rated at , with a starting tractive effort of and a continuous tractive effort of . Physically the locomotive is long and weighs , including some of ballast. GE made a number of changes when it redesigned the E60C for passenger use. The new design was lighter, at , and longer, at . A gearing of 68:38 permitted a maximum design speed of . The starting tractive effort was considerably lower at , with a continuous rating of . Unlike freight locomotives, passenger locomotives have to supply heat to passenger cars. In the 1970s Amtrak operated both old-style steam-heated cars and new Amfleet cars with head-end power (HEP). GE designed two variants to handle these use cases: the E60CP had steam generators, while the E60CH had HEP generators. Both models had a cab and pantograph at each end. Reflecting the varied electrification schemes on the Northeast Corridor the Amtrak units could operate at three different voltages: 11 kV 25 Hz AC, 12.5 kV 60 Hz AC, and 25 kV 60 Hz. The wheels had a more standard diameter of . GE revised the design in the early 1980s for use by Ferrocarriles Nacionales de México (NdeM) on its new electrification project. The E60C-2, like the passenger variants, had double cabs and double pantographs. They were geared at 83:20, for a maximum speed of . Although geared differently from the E60CP/CH it also used wheels. The locomotives are long and weigh . They employ six GE 752AF traction motors. The tractive effort was similar to the original E60C: starting and continuous. NdeM adopted 25 kV 60 Hz electrification. A later buyer, the Deseret-Western Railway, like the Black Mesa and Lake Powell, adopted 50 kV 60 Hz AC. History Black Mesa and Lake Powell Railroad The planned weight of a loaded coal train at the Black Mesa and Lake Powell (BM&LP) was . GE intended that the E60Cs work in multiple, three per train, to handle this load. The BM&LP ordered a total of six locomotives between 1972–1976, allowing it to operate two trains at once. The BM&LP acquired six former Ferrocarriles Nacionales de México E60C-2s after the latter discontinued electric operations in the late 1990s. These displaced the original E60Cs. The Arizona State Railroad Museum of Williams, Arizona took possession of ex-BM&LP E60C 6001 in 2010. Amtrak and New