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 249
Fig. 93.* Wood Boxing as Protectionfor Wires on Side Walls Fig. 94.* Protecting Wires on Walls by Iron Piping In paper mills, breweries, soap factories, packing houses, dyeworks, and cold storage rooms special pains must be taken to insure • Courtesy Inspection Department, Associated Factory Mutual…
Electrical engineering
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