 | Horatio Alvah Foster - 1901 - 1018 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.... | |
 | Harry Cooke Cushing - 1902 - 204 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... | |
 | George Velten Steeb - 1902 - 230 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... | |
 | 1902 - 738 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. NOTE. — In buildings used for starch and candy factories, ,woodworkers, grain elevators, flouring... | |
 | American School (Lansing, Ill.) - 1903 - 320 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... | |
 | 1905 - 484 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 are... | |
 | 1906 - 544 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... | |
 | American School (Chicago, Ill.) - 1906 - 528 стор.
...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... | |
 | 1906 - 590 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 are... | |
 | American School (Lansing, Ill.) - 1907 - 438 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 are... | |
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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. 
