San Francisco : Architect and Engineer, Inc · leaf 43
hange a draw-out type circuit breaker, as demonstratedby G. D. Allison, shift electrician. The tripped breaker, protecting a works transformer, was replacedIn less than five minutes after the cause of the ouiage was repaired. PC-I8I6 Two of the most vital electrical operations have their source of… … PLATE 2 PC-I8I7 Fast operating oil circuit breakers guard furnace and heating transformers that control the heavy loadof electric current.PC-I8I8 Teanned together to produce for war are the chlorination furnace at the left foreground and a rowof electrolytic cells.PC-I8I9 Magnesium cheeses which…
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