International Library of Technology · Scranton, International Textbook Co. · leaf 637
§27 INTERIOR WIRING. 43 also made so that they may be mounted flush with the wall.When switches are mounted flush, an iron box should beprovided in which to place them. Fig. 24 shows a switch … Fig. 22. Fig. 23. box or frame of the kind referred to. A piece of boardhaving an opening large enough to receive the box is nailedbetween the studding. The box is so mounted that theedge a will come flush with the plaster. The box is fastenedin position by screws at b, b and the switchis fastened…
Electrical engineering
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![An illustration from [Electric engineering.], 1902, leaf 637](https://img.insideoutlibrary.com/img/1024/ia-electricengineer03inte-637-379.webp)
