Must be so spliced or joined as to be both mechanically and electrically secure without solder. The joints must then be soldered, to insure preservation, and covered with an insulation equal to that on the conductors.
Electric Wiring for the Use of Architects, Underwriters, and the Owners of ... - Сторінка 89
автори: Russell Robb - 1896 - 183 стор.
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