International Library of Technology · Scranton, International Textbook Co. · leaf 309
e pipe W, and flows through TFuntil a better path pre-sents itself in the shape of the lead-sheathed cable C. It 38 ELECTRIC RAILWAYS. 23 flows along C until the track presents a better path, when itflows back to the rail again, as indicated by the arrows.Electrolytic action will occur where the… … Fig. 10. Stray current. Lead-covered underground cables are par-ticularly liable to damage, because lead is eaten away muchmore rapidly than iron; moreover, the corrosion never takesplace evenly, but in spots, so that the pipe or sheath becomespitted and is soon destroyed. Wrought-iron pipes are…
Electrical engineering
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