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Lamps from the 1890s consisted of a stand, font, chimney, and often a shade. [24] The font (also spelled "fount") held the kerosine for the lamp. [25] The chimney was a glass tube placed around the lamp's flame that had a bulge at the base that kept drafts away from the flame and added extra illumination. [26]
The Nickel Plate Glass Company was a manufacturer of tableware, lamps, and bar goods. It began operations in Fostoria, Ohio , on August 8, 1888, on land donated by the townspeople. The new company was formed by men from West Virginia who were experienced in the glassmaking business, and their company was incorporated in that state in February ...
Much early equipment having Ex s protection was designed with encapsulation and this has now been incorporated into IEC 60079-18 [Ex m]. Ex s is a coding referenced in IEC 60079-0. The use of EPL and ATEX Category directly is an alternative for "s" marking.
The institute was first organized by entrepreneurs Franklin Terry and Burton Tremaine of the National Electric Lamp Company. [3] Development of the site was started in 1911 when the National Electric Lamp Association (NELA), formed by John Robert Crouse Sr, J.B. Crouse, and H.A. Tremaine in 1901, [ 4 ] was dissolved and absorbed into General ...
An 1875 inventory counted 5290 public gas lamps connected by 170 miles (270 km) of mains and supply pipes. [3] Today, perhaps 1,172 gas lights are in place in thirteen of the city's neighborhoods, as well as in certain portions of Columbia Township and Sycamore Township . [ 2 ]
NEC Laboratories America was created in November 2002 through the merger of NEC Research Institute and NEC USA's Computer and Communications Research Laboratory. [14] NEC Laboratories succeeded in sending over 100 terabits of information per second through a single optical fibre in April 2011, establishing a new world record. [15]
A 50-hour-life projection bulb, for instance, is designed to operate only 50 °C (122 °F) below that melting point. Such a lamp may achieve up to 22 lumens per watt, compared with 17.5 for a 750-hour general service lamp. [76] Lamps of the same power rating but designed for different voltages have different luminous efficacy.
The National Electrical Code (NEC), or NFPA 70, is a regionally adoptable standard for the safe installation of electrical wiring and equipment in the United States. It is part of the National Fire Code series published by the National Fire Protection Association (NFPA), a private trade association . [ 1 ]