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The 25-tonners have been nicknamed "critters" by operators and railfans alike, due to their small size. This nickname is shared with similar GE products such as the closely related 23-ton switcher. [1] Starting in the 1970s, most 25-ton switchers were gradually replaced, either by more powerful and modern switcher locomotives, or by railcar ...
Wire sized 1 AWG is referred to as "one gauge" or "No. 1" wire; similarly, thinner sizes are pronounced "x gauge" or "No. x" wire, where x is the positive-integer AWG number. Consecutive AWG wire sizes thicker than No. 1 wire are designated by the number of zeros: No. 0, often written 1/0 and referred to as "one-aught" or "single-aught" wire
2 emissions fell from 202 to 148 g/km (0.72 to 0.53 lb/mi) compared to the similar model with a gasoline engine. [ 7 ] [ 8 ] Fuji Heavy Industries (FHI) spent three years starting in fall 2005 developing the EE20 after concluding the marque needed a diesel engine to compete in Europe. [ 8 ]
High voltage is defined as any voltage over 1000 volts. [3] Those of 2 to 33 kV are usually called medium voltage cables, those over 50 kV high voltage cables.. Modern HV cables have a simple design consisting of a few parts: the conductor, the conductor shield, the insulation, the insulation shield, the metallic shield, and the jacket.
NEMA (National Electrical Manufacturers Association) contactors and motor starters are rated by sizes. These sizes are grouped by rated current and power . [ 1 ] [ 2 ]
Conductor sizes range from 12 mm 2 (#6 American wire gauge) to 1,092 mm 2 (2,156,000 circular mils area), with varying resistance and current-carrying capacity. For large conductors (more than a few centimetres in diameter), much of the current flow is concentrated near the surface due to the skin effect .