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 248
ctors, if loosened by shrink-age of timbers and floors or by careless knocking. Special methods must be followed at corners and in wiring overbroken surfaces as on ceilings of mill-constructed buildings. Fig.88 shows a use of strain insulators in making a turn on a ceiling.These are insulating… … Fig. 89. Approved Method of Carrying WiresAround Beams nary cleats will not hold heavy wires at corners. With conductorsof No. 8 B. & S. gauge or over, it is not necessary to break around beams but smaller wires should be carried around the beamsas shown in Fig. 89. Thecleats on the ceiling…
Electrical engineering
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