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" ... 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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The Architect's and Builder's Pocket-book of Mensuration, Geometry ...

Frank Eugene Kidder - 1892 - 911 стор.
...covering. (e) Must be carefully put up. (d) Must be supported by glass or porcelain insulators. No switches or fusible cut-outs will be allowed where...such as glass or porcelain. 22. Interior Conduits : * (a) Must be continuous from one junction box to another, or to fixtures, and must be of material...
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The Architect's and Builder's Pocket-book of Mensuration, Geometry ...

Frank Eugene Kidder - 1892 - 911 стор.
...covering. (c) Must be carefully put up. (d) Must be supported by glass or porcelain insulators. No switches or fusible cut-outs will be allowed where...gases or dust, or to flyings of combustible material. (a) Must be protected when passing through floors, walls, partitions, timbers, etc., by waterproof,...
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Standard Tables for Electric Wiremen: With Instructions for Wiremen and ...

Charles M. Davis - 1893 - 128 стор.
...waterproof covering. c. Must be carefully put up. d. Must be supported by glass or porcelain insulators. No switches or fusible cut.outs will be allowed where...such as glass or porcelain. 22. INTERIOR CONDUITS*— a. Must be continuous from one junc* The object of a tube or conduit is to facilitate the insertion...
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Electric Lighting Specifications

Earle Abbott Merrilol - 1896 - 213 стор.
...approved waterproof covering. (See Definitions). c. Must be carefully put up. celain insulators. No switches or fusible cut-outs will be allowed where...insulating tubes, such as glass or porcelain. 22. INTERIOR CONDUITS*:—(See • Definitions). a. Must be continuous from one junction box to another, or to fixtures,...
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Electric Wiring for the Use of Architects, Underwriters, and the Owners of ...

Russell Robb - 1896 - 183 стор.
...consideration.] c. Must be carefully put up. d. Must be supported by glass or porcelain insulators. No switches or fusible cut-outs will be allowed where...partitions, timbers, etc., by waterproof, non-combustible, insulating-tubes, such as glass or porcelain. The requirements stated under Rule 21 are, it will be...
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The National Electrical Code: An Analysis and Explanation of the ...

Richard Henry Pierce - 1896 - 222 стор.
...Definitions.) c. Must be carefully put up. d Must be supported by glass or porcelain insulators. No switches or fusible cut-outs will be allowed where...through floors, walls, partitions, timbers, etc., by water- proof, non-combustible, insulating tubes, such as glass or porcelain. DEFINITIONS. RULE 21....
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Electric Wiring Specifications for Incandescent Lighting

George H. Kimber - 1896 - 59 стор.
...be carefully put up. d. Must be supported by glass or porcelain insulators. No switches, key sockets or fusible cut-outs will be allowed where exposed...gases or dust, or to flyings of combustible material. In damp places switches and cut-out blocks must be mounted on porcelain knobs. e. Must be protected...
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Transactions, Том 14

American Institute of Electrical Engineers - 1897
...switch 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 inclosed in a waterproof box or mounted on porcelain knobs....
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Transactions of the American Society of Mechanical Engineers

American Society of Mechanical Engineers - 1898
...switch or circuit breaker. I. 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. Must, when exposed to dampness, either be inclosed in a waterproof box or mounted on porcelain knobs....
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Distributing system and lamps

Francis Bacon Crocker - 1901 - 505 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. Must, when exposed to dampness, either be inclosed in a waterproof box or mounted on porcelain knobs....
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