Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 458
Fig. 25. Single-Track Cross- Fig. 26. Single-Track Crossing,ing, Cross Suspension. Cross Suspension. €HJAIt» WIRE§. Where trolley Avires are used in cities or in any location where there areother overhead conductors liable to fall across the trolley wire, it is custom-ary to place guard wires… … CROSS SUSPENSION WITH GUARDSFOR TROLLEY^WIRE Fig. 27. wire is drawn taut above the regular suspension wire ; porcelain insulatorsare secured to the same at a point about a foot or 18 inches either side of thetrolley wire, and through these insulators is threaded and tied a No. 10 gal-vanized iron…
Electrical engineering
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