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 198
roughly supported. If car-ried on the same poles with otherwires, the high-pressure wiresshould be carried at least 3feet above the other wires, butthis arrangement should neverbe adopted unless it is impos-sible to do otherwise. W^heresuch lines cross other lines, the poles of both lines must be… … Fig. 49. Use of Screen on High-TensionCrossover 174 UNDERWRITERS REQUIREMENTS 53 construction of crossovers and other details of high voltage lineswhich should be carefully studied and followed. Fig. 47 shows one arrangement for a crossover. A joint-polecrossing may sometimes be used and Fig. 48…
Electrical engineering
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