Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 37
t one inch from the surface wired over,that is, from the beams, flooring, etc., to which the insulator is fas-tened. Fig. 16 shows agood type of porcelainknob for this class ofwiring. For knob andtube wiring, it will benoted that, owing to thefact that the wiring isconcealed, the conductorsmust be… … Pig. 1(3. Porcelain Knob. 24 ELECTRIC WIRING 15 I ibmiis luhiiiii. Iil.lulls tuhiiij, is fre«|iieiitly iistnl with kiiohami tuln. wiriii;^, ami tin- rfjinlatiiMis f^ovfrniiif^ its use are pven inRuir Il, StH-tion S, of llie XaliiPiKil KUclric CimIc. Tliis tuhii)^, asstatitl in this /f»/«,niay Ik.…
Architecture · Building
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