Small, Sidney Aylmer, 1876- [from old catalog] · Chicago, F. J. Drake & co · leaf 144
SC2- KEOKUK-, I A.U.S. Fig. 60. The rail alone will not suffice, as it may be up on arock road-bed, or buried in cement or a soil that does notprovide a low resistance path for the lightning. With aconnection to both rail and ground point, any danger due ARRESTEES—AUXILIARY APPARATUS 145 to… … Fig. 61. Fig, 61 shows manner of grounding a two wire or un-grounded circuit.All ground wires should be No. 6 gauge or larger. 146 ELEMENTARY ELECTRICITY Question 9. What inspection is necessary for light-ning arresters? Ansiver. Frequent inspection (once a month) andcleaning with a bellows for…
Electricity
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
