[Trade Journal]
Publication: The Electrical Engineer
New York, NY, United States
vol. 20, no. 397, p. 583,584, col. 1,2
Trade Notes and Novelties
AND MECHANICAL DEPARTMENT.
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ADVERTISERS' HINTS.
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THE TRIPLE PETTICOAT CHINA INSULATOR, made by F. M. Locke, has been tested, and 85,000 volts potential was required to puncture it. This should in a great measure overcome the danger of overhead circuits with high potential currents.
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