 | New York (N.Y.) - 1913 - 254 стор.
...be so placed in wet places that an air space will be left between conductors and pipes in crossing, and the former must be run in such a way that they...with the pipe accidentally. Wires should be run over, rather than under, pipes upon which moisture is likely to gather or which, by leaking, might cause... | |
 | 1910 - 1264 стор.
...be so placed in wet places that an air space will be left between conductor and pipes in crossing, and the former must be run in such a way that they...with the pipe accidentally. Wires should be run over rather than under pipes upon which moisture is likely to gather or which, by leaking, might cause trouble... | |
 | Calvin Franklin Swingle - 1906 - 488 стор.
...be so placed in wet places that an air space will be left between conductors and pipes in crossing, and the former must be run in such a way that they cano FIGURE 142. not come in contact with the pipe accidentally. Wires should be run over rather than... | |
 | 1891 - 738 стор.
...air space must be left between conductor* and pipes in crossing, and the former must be run insueh a way that they cannot come in contact with the pipe accidentally. Wiivii should be run over all pipes upon which condensed moisture is likely to gather, or which by... | |
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Must be so placed in wet places that an air space will be left between conductors and pipes in crossing, and the former must be run in such a way that they cannot come in contact with the pipe accidentally. Wires should be run over, rather than under,... 
