Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 104
ruction. The pipe should be reamedso as to remove any internal burs which might injure the insulationduring the process of drawing in. A modification of this system consists of the use of cement-lined wrought-iron pipes, of 8-foot lengths made of riveted sheet-iron pipes. Rosendale cement is used… … f- SAPPROX. :v^^ Fig. 4G. Cross-Section of Wrought-Iron Pipe Conduit sections have a very smooth interior and are light enough to be easilyhandled. They are embedded in concrete, similar to the systempreviously described. Connections between the sections are madeby means of joints, constructed on…
Electrical engineering
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