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Книги Книги 11 - 20 з 32 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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Electrical Engineer's Pocket-book: A Hand-book of Useful Data for ...

Horatio Alvah Foster - 1901 - 987 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. c. Mu&t, when exposed to dampness, either be inclosed in a waterproof box or mounted on porcelain knobs....
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Standard wiring for electric light and power: as adopted by the Fire ...

Harry Cooke Cushing - 1902 - 152 стор.
...automatic cut-outs should not, however, be placed in the immediate vicinity of easily ignitible stuff, or where exposed to inflammable gases or dust, or to flyings of combustible material, as the arcing produced whenever they break the circuit might cause a fire or explosion. When they are...
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Agents' and Inspectators Pocket-book of Fire Protection

George Velten Steeb - 1902 - 218 стор.
...switch or circuit-breaker, and 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 buildings used for starch and candy factories, woodworkers, grain elevators and flouring mills or...
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International library of technology: a series of textbooks for ..., Том 13

International Textbook Company - 1902
...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. NOTE. — In buildings used for starch and candy factories, ,woodworkers, grain elevators, flouring...
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Practical lessons in electricity. Elements of electricity. The electric current

American School (Chicago, Ill.), Lawrence K. Sager, Harry Cooke Cushing, Francis Bacon Crocker - 1903 - 221 стор.
...automatic cut-outs should not, however, be placed in the immediate vicinity of easily ignitible stuff, nor where exposed to inflammable gases or dust, or to flyings of combustible material, as the arcing produced whenever they break the circuit might! cause a fire or explosion. When they...
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Cyclopedia of Applied Electricity: Current measurements; Wiring; Telegraph

American School (Chicago, Ill.) - 1905
...automatic cut-outs should not, however, be placed in the immediate vicinity of easily ignitible stuff, nor where exposed to inflammable gases or dust, or to flyings of combustible material, as the arcing produced whenever they break the circuit might cause a fire or explosion. When they are...
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Modern Engineering Practice: A Reference Library..., Том 1

American School (Chicago, Ill.) - 1906
...automatic cut-outs should not, however, be placed in the immediate vicinity of easily iguitible stuff, nor where exposed to inflammable gases or dust, or to flyings of combustible material, as the arcing produced whenever they break the circuit might cause a fire or explosion. When they are...
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Storage Batteries ; Incandescent Lighting ; Arc Lighting ; Interior Wiring

1906 - 550 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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Cyclopedia of Engineering: A Manual of Steam Boilers, Steam Pumps ..., Том 5

Louis Derr - 1906
...automatic cut-outs should not, however, be placed in the immediate vicinity of easily ignitible stuff, nor where exposed to inflammable gases or dust, or to flyings of combustible material, as the arcing produced whenever they break the circuit might cause a fire or explosion. When they are...
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Cyclopedia of architecture, carpentry, and building: a general reference ...

American School (Lansing, Ill.) - 1907
...automatic cut-outs should not, however, be placed in the immediate vicinity of easily ignitible stuff, nor where exposed to inflammable gases or dust, or to flyings of combustible material, as the arcing produced whenever they break the circuit might cause a fire or explosion. When they are...
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