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 310
Fig. 140. Common Form of Floor Outlet Box Where a floor outlet in a conduit system is desired, a specialtype of box, known as a floor outlet box, should be used, if the fittingis liable to injury or the presence of moisture is probable. Suchboxes (see Fig. 140) provide ample room for making…
Electrical engineering
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