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Книги Книги 1 - 10 з 25 у Must, for constant-current systems, be provided with an approved hand switch, also....
" Must, for constant-current systems, be provided with an approved hand switch, also an automatic switch that will shunt the current around the . carbons, should they fail to feed properly. "
Convention - Сторінка 107
автори: National Electric Light Association. Convention - 1892
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Electric Lighting Specifications for the Use of Engineers and Architects

Earle Abbott Merrill - 1892 - 176 стор.
...partitions, treated as in central stations under like conditions. Lamps and Other Devices. ARC LAMPS—Must be in every case: 1. Carefully isolated from inflammable...insulated from the circuit in all their exposed parts. Incandescent lamps in series circuits, having a maximum potential of 350 volts or over, must be governed...
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Electric Lighting Specifications for the Use of Engineers and Architects

Earle Abbott Merrill - 1892 - 176 стор.
...with a glass globe surrounding the arc, securely fastened upon a closed base. No broken or cracaed globes may be used. 3. Provided with a hand switch,...provided with a wire netting around the globe and a spark arrester above, to prevent escape of sparks, melted copper or carbon. Incandescent lamps in series...
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Electric Lighting Specifications for the Use of Engineers and Architects

Earle Abbott Merrill - 1892 - 176 стор.
...with a glass globe surrounding the arc, securely fastened upon a closed base. No broken or cracited globes may be used. 3. Provided with a hand switch,...insulated from the circuit in all their exposed parts. Incandescent lamps in series circuits, having a maximum potential of 350 volts or over, must be governed...
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The Architect's and Builder's Pocket-book of Mensuration, Geometry ...

Frank Eugene Kidder - 1892 - 911 стор.
...switch that will shunt the current around the carbons should they fail to feed properly. (d) Must be provided with reliable stops to prevent carbons from falling out in case the clamps become loose. (c) Must be carefully insulated from the circuit in all their exposed parts. (/) Must be provided with...
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Standard Tables for Electric Wiremen: With Instructions for Wiremen and ...

Charles M. Davis - 1893 - 128 стор.
...switch, that will shunt the current around the carbons should they fail to feed properly. d. Must be provided with reliable stops to prevent carbons from falling out in case the clamps become loose. e. Must be carefully insulated from the circuit in all their exposed parts. f. Must be provided with...
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Electrical Engineer, Том 17

1894
...switch, that will shunt the current around the carbons should they fall to feed properly. I. Must be provided with reliable stops to prevent carbons from falling out in case the clamps become loose. 5. Must be carefully Insulated from the circuit in all their exponed parts. 6. Must be, wbere Inflammable...
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The National Electrical Code: An Analysis and Explanation of the ...

Richard Henry Pierce - 1896 - 222 стор.
...comply with requirements for switches on hanger-boards as laid down in Section g of Rule 13. d. Must be provided with reliable stops to prevent carbons from falling out in case the clamps become loose. e. Must be carefully insulated from the circuit in all their exposed parts. f. Must be provided with...
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New Catechism of Electricity: A Practical Treatise

Nehemiah Hawkins - 1896 - 541 стор.
...shunt the current around the carbons should they fail to feed properly. (See Definitions.) d. Must be provided with reliable stops to prevent Carbons from falling out in case the clamps become loose. e. Must be carefully insulated from the circuit in all their exposed parts. f. Must be provided with...
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Electric Wiring for the Use of Architects, Underwriters, and the Owners of ...

Russell Robb - 1896 - 183 стор.
...comply with requirements for switches on hanger-boards as laid down in Section g of Rule 13.] d. Must be provided with reliable stops to prevent carbons from falling out in case the clamps become loose. e. Must be carefully insulated from the circuit in all their exposed parts. / Must be provided with...
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Electric Lighting Specifications for the Use of Engineers and Architects

Earle Abbott Merrill - 1896 - 213 стор.
...shunt the current around the carbons should they fail to feed properly. (See Definitions). d. Must be provided with reliable stops to prevent carbons from falling out in case the clamps become loose. e. Must be carefully insulated from the circuit in all their exposed parts. /. Must be provided with...
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