International Library of Technology · Scranton, International Textbook Co. · leaf 619
A neat glass or asbestos-lined door shouldbe provided. A cabinet made in this way is inexpensiveand safe and meets the requirements of the Underwriters.In more expensive in-stallations, the panelboards are made ofslate or marble andthe sides and bottomsof the boxes are alsoof slate or marble. Fig.… … 26 INTERIOR WIRING. 27 containing the panel board, and the outer one, or gutter,as it is sometimes called. All boxes are not provided withthis gutter, but the best ones are, as it gives a convenientspace in which to arrange the wires in case they should notcome to the box in the best order for…
Electrical engineering
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![An illustration from [Electric engineering.], 1902, leaf 619](https://img.insideoutlibrary.com/img/1024/ia-electricengineer03inte-619-366.webp)
