Small, Sidney Aylmer, 1876- [from old catalog] · Chicago, F. J. Drake & co · leaf 145
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
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