Small, Sidney Aylmer, 1876- [from old catalog] · Chicago, F. J. Drake & co · leaf 420
t raised to about4000 F. In fact, the chief danger of fire is not that theoil may be ignited by any defect or arc within the trans-former, but that a fire in the building in which the trans-formers are installed may so heat the oil as to cause it totake fire. Transformers 421 General construction.… … Fig. 196. Low Voltage Coils. per layer, with fullerboard insulation, in addition to thecotton covering, between turns. Exceptions to this con-struction are made only when the size of the conductoris such as to render the use of copper strip impracticable, ELEMENTARY ELECTRICITY
Electricity
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