Lightning Conductors and Lightning Guards: A Treatise on the Protection of Buildings, of Telegraph Instruments and Submarine Cables, and of Electric Installations Generally, from Damage by Atmospheric Discharges

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Whittaker and Company, 1892 - 544 стор.
 

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Сторінка 169 - ... may come, be of ample dimensions and in thoroughly perfect electrical connection with the earth, the edifice with all that it contains will be safe, and the conductor might even be surrounded by gunpowder in the heaviest storm without risk or danger. All accidents may be said to be due to a neglect of these simple elementary principles. The most frequent sources of failure are conductors deficient either in number, height, or conductivity, bad joints, or bad earth connections.

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