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Книги Книги 21 - 29 з 29 у ... the wires ; that is, in a two-wire system the two wires, and in a three-wire....
" ... the wires ; that is, in a two-wire system the two wires, and in a three-wire system the three wires, must be protected by the cut-out and disconnected by the operation of the switch or circuit breaker. "
New Catechism of Electricity: A Practical Treatise - Сторінка 388
автори: Nehemiah Hawkins - 1896 - 541 стор.
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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.
...or circuit-breaker. . b. Must not be placed in the immediate vicinity of easily ignitable stuff, or where exposed to inflammable gases or dust, or to flyings of combustible material. c. Must, when exposed to dampness, either be enclosed in a water-proof box or mounted on porcelain...
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Modern electrical construction...

Henry Charles Horstmann, Victor Hugo Tousley - 1908
...each wire. These cut-outs must not be placed in the immediate vicinity of easily ignitible stuff, or where exposed to inflammable gases, or dust or to flyings of combustible material. h. The wires inside building shall be of copper not less than No. 16 B. & S. gage, and must have insulation...
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Storage batteries ; Incandescent lighting ; Arc lighting ; Interior wiring ...

International Correspondence Schools - 1908 - 639 стор.
...switch or circuit-breaker. b. Must not be placed in the immediate vicinity of easily ignitible stuff or where exposed to inflammable gases or dust or to flyings of combustible material. In starch and candy factories, grain elevators, flouring mills, and buildings used for woodworking...
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Digest of the City of Little Rock, Arkansas

Little Rock (Ark.). - 1915 - 459 стор.
...switch or circult->breaker. (b) Must not be placed in the immediate vicinity of easily ignitiWe stuff or where exposed to inflammable gases or dust or to flyings of combustible material, (c) Must, when exposed to dampness, either be enclosed in a moisture-proof box or mounted on porcelain...
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Medical Electricity Röntgen Rays and Radium: With a Practical Chapter on ...

Sinclair Tousey - 1915 - 1219 стор.
...or circuit-breaker. (6) Must not be placed in the immediate vicinity of easily ignitible stuff, or where exposed to inflammable gases or dust or to flyings of combustible material. RUBBER-COVERED WIRE. (a) Copper for conductors must be thoroughly tinned. INSULATION FOR VOLTAGES BETWEEN...
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Standard Wiring for Electric Light and Power: As Adopted by the Fire ...

Harry Cooke Cushing - 1915 - 224 стор.
...placed where exposed to mechanical injury nor in the immediate vicinity of easily ignitible stuff or where exposed to inflammable gases or dust or to flyings of combustible material. Where the occupancy of a building is such that switches, cut-outs, etc., cannot be located so as not...
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Medical electricity and Rontgen rays

Sinclair Tousey - 1921 - 1329 стор.
...or circuit-breaker. (b) Must not be placed in the immediate vicinity of easily ignitible stuff, or where exposed to inflammable gases or dust or to flyings of combustible material. RUBBER-COVERED WIRE. (a) Copper for conductors must be thoroughly tinned. INSOLATION FOR VOLTAGES BETWEEN...
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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.
...each wire. These cut-outs must not be placed in the immediate vicinity of easily ignitible stuff, or where exposed to inflammable gases, or dust or to flyings of combustible material. h. The wires inside building shall be of copper not less than No. 16 B. & S. gage, and must have insulation...
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Encyclopedia of Engineering: A Treatise on Boilers, Steam Engines ..., Том 3

Calvin Franklin Swingle - 1906
...wiremen of some experience. b. Must not be placed in the immediate vicinity of easily ignitable stuff or where exposed to inflammable gases or dust or to flyings of combustible material. In starch and candy factories, grain elevators, flouring mills, and buildings used for woodworking...
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