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 252
in approvedmolding, or if the location of conductors is such as will permit an airspace of not less than 2 inches on all sides except from the surface wiredover, they may be supported on porcelain knobs or cleats, provided theknobs or cleats are mounted on not less than \ inch fire-resisting… … <oPi oo H <w Q si > s ^^^1 a*gl >< 5 W e ^ IO ^ CO o I—I ^ W I > 2 i> O s> U 2 O ■K ^ § O1/1 a, ELECTRIC RAILWAYS 123 (h) Air Pump Motor and Circuits (1) Circuits to be run in approved metal conduit or in approvedmolding, except that when run below the floor of the car they…
Electrical engineering
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