 | Charles M. Davis - 1893 - 162 стор.
...Must be separated at least six inches. b. Must be provided with an approved waterproof covering. c. Must be carefully put up. d. Must be supported by...INTERIOR CONDUITS*— a. Must be continuous from one junc* The object of a tube or conduit is to facilitate the insertion or extraction of the conductors,... | |
 | Earle Abbott Merrill - 1896 - 232 стор.
...at least six inches. b. Must be provided with an approved waterproof covering. (See Definitions). c. Must be carefully put up. d. Must be supported by...such as glass or porcelain. 22. INTERIOR CONDUITS*: — (See Definitions). a. Must be continuous from one junction box to another, or to fixtures, and... | |
 | Nehemiah Hawkins - 1896 - 568 стор.
...least six inches. b. Must be provided with an approved water-proof covering. (See Definitions.) c. Must be carefully put up. d. Must be supported by...such as glass or porcelain. 22. INTERIOR CONDUITS* : (See Definitions.) a. Must be continuous from one junction box to another, or to fixtures, and must... | |
 | Russell Robb - 1896 - 208 стор.
...compounds or mixtures as it will be liable to be subjected to in the risk under consideration.] c. Must be carefully put up. d. Must be supported by...partitions, timbers, etc., by waterproof, non-combustible, insulating-tubes, such as glass or porcelain. The requirements stated under Rule 21 are, it will be... | |
 | Richard Henry Pierce - 1896 - 234 стор.
...least six inches, b. Must be provided with an approved water-proof covering. (See Definitions.) c. Must be carefully put up. d Must be supported by glass...through floors, walls, partitions, timbers, etc., by water- proof, non-combustible, insulating tubes, such as glass or porcelain. DEFINITIONS. RULE 21.... | |
 | Earle Abbott Merrilol - 1896 - 232 стор.
...provided with an approved waterproof covering. (See Definitions). c. Must be carefully put up. celain insulators. No switches or fusible cut-outs will be...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,... | |
 | George H. Kimber - 1896 - 80 стор.
...chemical compounds or mixtures as it will be liable to be subjected to in the risk under consideration. c. Must 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 to inflammable gases or dust, or to flyings... | |
 | Nehemiah Hawkins - 1896 - 570 стор.
...least six inches. b. Must be provided with an approved water-proof covering. (See Definitions.) c. Must be carefully put up. d. Must be supported by glass or porcelain insulators. Nc switches or fusible cut-outs will be allowed where exposed to inflammable gases or dust, or to flyings... | |
 | American Institute of Electrical Engineers - 1897 - 710 стор.
...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.... | |
 | American Society of Mechanical Engineers - 1898 - 1122 стор.
...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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... 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. 
