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NEMA L14 are three-pole and ground connectors rated for 125/250 V. Intended for three-pole, four-wire hot-hot-neutral-ground circuits with a nominal supply voltages of 240 or 208 V hot-to-hot and 120 V hot-to-neutral. These connectors are common on household backup generators, and on racks of power amplifiers in large audio systems.
For shorter vertical transitions (perhaps 30–150 feet) an unarmored cable can be used in conjunction with basket (Kellum) grips or even specially designed duct plugs. Material specification for the cable's jacket will often consider resistance to water, oil, sunlight, underground conditions, chemical vapors, impact, fire, or high temperatures.
A linear alternator is essentially a linear motor used as an electrical generator. An alternator is a type of alternating current (AC) electrical generator. The devices are often physically equivalent. The principal difference is in how they are used and which direction the energy flows.
The ThinkPad L series is a line of notebook computers from Lenovo as part of the ThinkPad family. As opposed to the ThinkPad T and X series, the L series has an added focus on economy and value; [1] they are the entry-level range for enterprise use, [2] and are also used by students. [3]
However, the use of axle generators and batteries persisted for many years. This started to change in the late 1950s, when the Chicago and North Western Railway removed the steam generators from their EMD F7 and E8 locomotives in commuter service and installed diesel generator sets (see Peninsula 400). This was a natural evolution, as their ...