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Книги Книги 21 - 26 з 26 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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Radford's estimating and contracting: a practical manual of up-to-date ...

William A. Radford - 1913 - 883 стор.
...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. In risks having private plants, the yard wires running from building to building are not generally...
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Standard Wiring for Electric Light and Power: As Adopted by the Fire ...

Harry Cooke Cushing - 1915 - 224 стор.
...switches conveniently located on the mains or if the generators are near at hand. Switches should always be placed in dry, accessible places, and be grouped as far as possible. Single-throw knife switches should be so placed that gravity will not tend to close them. Doublethrow...
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Standard Wiring for Electric Light and Power as Adopted by the Fire ...

Harry Cooke Cushing (jr.) - 1917 - 360 стор.
...switches conveniently located on the mains or if the generators are near at hand. All switches should be placed in dry, accessible places, and be grouped as far as possible. All knife switches should be so placed that gravity will not tend to close them. (See cut p. 107.)...
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Wiring for Light and Power: A Detailed and Fully Illustrated Commentary on ...

Terrell Croft - 1917 - 426 стор.
...entrance cut-out, but to install an entrance switch at each building. 246. If/. SWITCHES. Must always be placed in dry, accessible places, and be grouped as far as possible. (See No. 19c.) Single-throw knife switches must be so placed that gravity will not tend to close them....
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New Code of Ordinances of the City of New York: Including the Sanitary Code ...

New York (N.Y.) - 1922 - 621 стор.
...meters. Service switches must indicate plainly whether they are open or closed. b. Switches must always be placed in dry, accessible places, and be grouped as far as possible (see § 419c of this chapter). Singlethrow knife switches must be so placed that gravity will not tend...
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Encyclopedia of Engineering: A Treatise on Boilers, Steam Engines ..., Том 3

Calvin Franklin Swingle - 1906
...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. Knife switches must be so placed that gravity will tend to open rather than close them. When possible,...
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