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A distribution board (also known as panelboard, circuit breaker panel, breaker panel, electric panel, fuse box or DB box) is a component of an electricity supply system that divides an electrical power feed into subsidiary circuits while providing a protective fuse or circuit breaker for each circuit in a common enclosure.
A toggle light switch Internal components of a toggle switch. The toggle mechanism provides "snap-action" through the use of an "over-center" geometry. The design was patented in 1916 by William J. Newton and Morris Goldberg. [2] The switch actuator does not control the contacts directly, but through an intermediate arrangement of springs and ...
It is an assembly of one or more panels, each of which contains switching devices for the protection and control of circuits fed from the switchboard. Several manufacturers make switchboards used in industry, commercial buildings, telecommunication facilities, oil and gas plants, data centers, health care, and other buildings, and onboard large ...
These first panel-type exchanges were placed in service in Newark, New Jersey, [5] on January 16, 1915 at the Mulberry central office serving 3640 subscribers, and on June 12 in the Waverly central office, which had 6480 lines. Panel development continued throughout the rest of the 1910s and in the 1920s in the United States.
Unlike the various Dodge WC series models of larger, light 4×4 trucks, the Willys and Ford jeeps were all the same from the factory, and specialization happened only through standardized accessories, field kits, and local / in field modifications. Frequently made additions to the standard jeeps were to fit weaponry, communications equipment ...
A membrane switch is a custom switch assembly that can open or close the conducting path in an electrical circuit and requires at least one contact made of or attached to a flexible substrate. Its assembly differs from traditional mechanical switches: a membrane switch's construction consists of various thin layers sandwiched together using ...
A switch housing (also known as a "switch cup" or "nose column"), a metal or plastic cylinder mounted below and in the center of the fan's motor. The switch housing is used to conceal and protect various components, which can include wires, capacitors, and switches; on fans that require oiling, it often conceals the oil reservoir which ...
22 January Danger: Men at Work, about sexual harassment of women at work; the film 'Business as Usual' about a clothing store in Liverpool, with Glenda Jackson, later a Labour MP; Alice Mahon, Labour MP; 25 year old Karen Wileman, an electronics assembly worker in Hampshire, was sacked when she told her employer, 44-year-old Raymond Atthill, that she was taking him to court for sexual ...
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