 | Frank Eugene Kidder - 1892 - 1032 стор.
...Must be supported by glass or porcelain insulators. No switches or fusible cut-outs will be allowed where exposed to inflammable gases or dust, or to flyings of combustible material. (e) Must be protected when passing through floors, walls, partitions, timbers, etc., by waterproof,... | |
 | Charles M. Davis - 1893 - 162 стор.
...Must be supported by glass or porcelain insulators. No switches or fusible cut.outs will be allowed where exposed to inflammable gases or dust, or to flyings of combustible material. e. Must be protected when passing through floors, walls, partitions, timbers, etc., by waterproof,... | |
 | Earle Abbott Merrilol - 1896 - 232 стор.
...Definitions). c. Must be carefully put up. celain insulators. No switches or fusible cut-outs will be allowed where exposed to inflammable gases or dust, or to flyings of combustible material. e. Must be protected when passing through floors, walls, partitions, timbers, etc., by waterproof,... | |
 | Earle Abbott Merrill - 1896 - 232 стор.
...Must be supported by glass or porcelain insulators. No switches or fusible cut-outs will be allowed where exposed to inflammable gases or dust, or to flyings of combustible material. e. Must be protected when passing through floors, walls, partitions, timbers, etc., by waterproof,... | |
 | George H. Kimber - 1896 - 80 стор.
...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 of combustible material. In damp places switches and cut-out blocks must be mounted on porcelain knobs. e. Must be protected... | |
 | Nehemiah Hawkins - 1896 - 568 стор.
...Must be supported by glass or porcelain insulators. No switches or fusible cut-outs will be allowed where exposed to inflammable gases or dust, or to flyings of combustible material. e. Must be protected when passing through floors, walls, partitions, timbers, etc., by water-proof,... | |
 | Richard Henry Pierce - 1896 - 234 стор.
...Must be supported by glass or porcelain insulators. No switches or fusible cut-outs will be allowed where exposed to inflammable gases or dust, or to flyings of combustible material, e. Must be protected when passing through floors, walls, partitions, timbers, etc., by water- proof,... | |
 | Russell Robb - 1896 - 206 стор.
...Must be supported by glass or porcelain insulators. No switches or fusible cut-outs will be allowed where exposed to inflammable gases or dust, or to flyings of combustible material. e. Must be protected when passing through floors, walls, partitions, timbers, etc., by waterproof,... | |
 | American Institute of Electrical Engineers - 1897 - 710 стор.
...the 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.
...be protected by the cut-out and disconnected by the operation of the switch or circuit breaker. I. Must not be placed in the immediate vicinity of easily...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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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. 
