Modern electrical construction; a reliable, practical guide for the beginner in electrical construction, showing the latest approved methods of installing work of all kinds according to the safety rules of the National board of fire underwriters (1905)
Horstmann, Henry C[harles], 1858- [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] joint author · Chicago, F. J. Drake & Co. · leaf 106
laceof crossing to prevent the upper wires from sagging andresting on the lower; also to prevent any strain from comingon tap joints. Approved flexible tubing such as circular loom INSIDE WORK. 103 is also often used in crossing wires and pipes. In dry loca-tions it is quite safe and does not break… … Figure 51 former must be run in such a way that they cannot come incontact with the pipe accidentally. Wires should be run overrather than under pipes upon which moisture is likely togather or which, by leaking, might cause trouble on a circuit. This is a rule that is very often violated, as much…
Electrical engineering
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