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Книги Книги 11 - 18 з 18 у Must be capable of being disconnected at the power plant, or of being divided into....
" Must be capable of being disconnected at the power plant, or of being divided into sections, so that, in case of fire on the railway route, the current may be shut off from... "
Electric Lighting Specifications for the Use of Engineers and Architects - Сторінка 137
автори: Earle Abbott Merrill - 1892 - 176 стор.
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Electric lighting: a practical exposition of the art, for the use of ..., Том 2

Francis Bacon Crocker - 1901
...permanently and effectively connected to "earth." TROLLEY WIRES. / Must not be smaller than No. 0 B. & S. copper or No. 4 B. & S. silicon bronze, and must...readily stand the strain put upon them when in use. k. Must have a double insulation from the ground. In wooden-pole construction the pole will be considered...
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Agents' and Inspectators Pocket-book of Fire Protection

George Velten Steeb - 1902 - 218 стор.
...TROLLEY WIRES, RAILWAY POWER PLANTS, LIGHTING AND POWER FROM RAILWAY WIRES.— Trolley wires must be no smaller than No. OB & S. copper, or No. 4 B & S....readily stand the strain put upon them when in use, must have a double insulation from the ground (in wooden pole construction the pole will be considered...
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The electrical transmission of energy: A manual for the design of electrical ...

Arthur Vaughan Abbott - 1904 - 675 стор.
...sheaths of cables must be permanently grounded. Trolley Wires. j. Must not be smaller than No. 0 B. & S. copper or No. 4 B. & S. silicon bronze, and must...readily stand the strain put upon them when in use. k. Must have a double insulation from ground. In wooden-pole construction, the pole will be considered...
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Modern electrical construction...

Henry Charles Horstmann, Victor Hugo Tousley - 1908
...be used. Trolley Wires. /. Must not be smaller than No. 0 B. & S. gage copper or No. 4 B. & S. gage silicon bronze, and must readily stand the strain put upon them when in use. k. Must have a double insulation from the ground. In wooden pole construction the pole will be considered...
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Wiring for Light and Power: A Detailed and Fully Illustrated Commentary on ...

Terrell Croft - 1917 - 426 стор.
...WIRES. 12t. If/. TROLLEY WIRES. Must not be smaller than No. 0 B. & S. gage copper or No. 4 B. & S. gage silicon bronze, and must readily stand the strain put upon them when in use. I2j. f/. TROLLEY WIRES. Must have a double insulation from the ground. In wooden pole construction...
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Audels Engineers and Mechanics Guide, Том 8

1921
...Electrical Code. 12-«. — Must not be smaller than No. OB & S. gauge copper or No. 4 B. & S. gauge silicon bronze, and must readily stand the strain put upon them when in use. 12-7". — Must have a double insulation from the ground. In wooden pole construction the pole will...
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Electrical Engineer, Том 12

1891
...smaller than So, 0 B. & S., copper, or Xo, 4 RA S.. silicon bronze, and must readily stand tbe strain pat upon them when in use. 2. Well insulated from their supports, and in case of the side or double-pole construction, the supports shall also be insulated from tbe poles immediately outside the...
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Encyclopedia of Engineering: A Treatise on Boilers, Steam Engines ..., Том 3

Calvin Franklin Swingle - 1906
...used. Trolley Wires. j. Must not be smaller than No. o B. & S. Gauge copper or No. 4 B. & S. Gauge silicon bronze, and must readily stand the strain put upon them when in use. k. Must have a double insulation from the ground. In wooden pole construction the pole will be considered...
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