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Книги Книги 11 - 20 з 30 у ... b. Must always be placed in dry, accessible places, and be grouped as far as....
" ... b. Must always be placed in dry, accessible places, and be grouped as far as possible. Knife switches must be so placed that gravity will tend to open : rather than close the switch. "
Electric Lighting Specifications for the Use of Engineers and Architects - Сторінка 132
автори: Earle Abbott Merrill - 1892 - 176 стор.
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Transactions, Том 14

American Institute of Electrical Engineers - 1897
...point where the wires enter the building, and arranged to cut off the entire current. 6. Must always be placed in dry. accessible places, and be grouped as far as possible. K.nife switches must be so placed that gravity will tend to open rather than to close the switch. c....
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Transactions of the American Society of Mechanical Engineers

American Society of Mechanical Engineers - 1898
...point where the wires enter the building and arranged to cut off the entire current. I. Must always be placed in dry, accessible places, and be grouped as far as possible. Knife switches must be so placed that gravity will tend to open rather than close the switch. c. Must...
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Electrical Engineer's Pocket-book: A Hand-book of Useful Data for ...

Horatio Alvah Foster - 1901 - 987 стор.
...point where the wires enter the building, and arranged to cut off the entire current. 6. Must always be placed in dry, accessible places, and be grouped as far as possible. Knife switches must be so placed that gravity will tend to open rather than close the switch. c. Must...
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Distributing system and lamps

Francis Bacon Crocker - 1901 - 505 стор.
...point where the wires enter the building, and arranged to cut off the entire current. b. Must always be placed in dry, accessible places, and be grouped as far as possible. Knife switches must be so placed that gravity will tend to open : rather than close the switch. c....
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Agents' and Inspectators Pocket-book of Fire Protection

George Velten Steeb - 1902 - 218 стор.
...point where the wires enter the building, and arranged to cut off the entire current, and must always be placed in dry, accessible places, and be grouped as far as possible. Knife switches must be so placed that gravity will tend to open rather than close the switch. Must...
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International Library of Technology: A Series of Textbooks for Persons ...

1902
...point where the wires enter the building, arjd arranged to cut off the entire current. b. Must always be placed in dry, accessible places and be grouped as far as possible. Knife switches must be so placed that gravity will tend to open rather than close the switch. c. Must...
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Storage Batteries ; Incandescent Lighting ; Arc Lighting ; Interior Wiring

1906 - 550 стор.
...other switches conveniently located on the mains or if the generators are near at hand. b. Must always be placed in dry, accessible places and be grouped as far as possible. Knife switches must be so placed that gravity will tend to open rather than close them. When possible,...
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Storage batteries ; incandescent lighting ; arc lighting ; interior wiring ...

International Correspondence Schools - 1908
...cut-out and switch must be arranged to cut off current from all devices, including meters. b. Must always be placed in dry, accessible places and be grouped as far as possible. Knife switches must be so placed that gravity will tend to open rather than close them. When possible,...
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Compiled Ordinances of the City of St. Paul, Minnesota

Saint Paul (Minn.)., James C. Michael, Hiram David Frankel - 1908 - 1245 стор.
...point where the wires enter the building, and arrange to cut off the entire current. b. Must always be placed in dry, accessible places, and be grouped as far as possible. Knife switches must be so placed that gravity will tend to open rather than close the switches. c....
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Modern electrical construction...

Henry Charles Horstmann, Victor Hugo Tousley - 1908
...off. A switch is also useful in cases of trouble on the wiring, to allow of repairing. b. Must always be placed in dry, accessible places, and be grouped as far as possible. (See No. 17 c.) Singlethrow knife switches must be so placed that gravity will tend to open rather...
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