THE opening by Sir Ernest Rutherford of the high voltage research laboratory of Metropolitan-Vickers Electrical Co., Ltd., at Trafford Park, Manchester, on Feb. 28 is a noteworthy event. The increasing use of the outdoor type of construction for high voltage apparatus makes it necessary to determine how this apparatus will act during gales, thunderstorms, and snow-storms. As the standard pressure for distributing electrical energy in Great Britain is 132,000 volts, and a factor of safety of three or four is desirable, it is very advisable that all devices for use in high voltage lines should be tested at pressures of several hundred thousand volts.
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Journal of Geophysical Research (1930)