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 716
but thereAvill come occasional flashes when even the small resistance of ^ ohm maycount. Bury the earth plates in damp earth or running water. The platesshould be of metal at least three feet square. If the conductor at any part of the course goes near water or gas mains,it is best to connect it to… … FIG, 4 CONDUCTORS AND FASTENINGS..(FROM ANDERSON, AND LIGHTNING ROD CONFERENCE.) The top of the rod and all projecting terminal points should be plated, orotherwise protected from corrosion and rust. Independent grounds are preferable to water and gas mains. Clusters ofpoints or groups of two or…
Electrical engineering
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