. The street railway review . ey can get on their load, he will have another dynamo in operation,and all safe for the time being. So many conditions exist whichare liable to change this plan that no set regulations can apply. Tlicrc have been limes when the local and long-distance bus-barshave lieen paralleled and the voltage averaged accordingly. Allthree of the long-dislanco lines are then put in parallel to assistllie voltage and all four of the a. c. bus-bars; both sets of bothl)oards are paralleled through the cross-connecting switches underNo. 2 l)oard. The electrician encounters many pn
. The street railway review . ey can get on their load, he will have another dynamo in operation,and all safe for the time being. So many conditions exist whichare liable to change this plan that no set regulations can apply. Tlicrc have been limes when the local and long-distance bus-barshave lieen paralleled and the voltage averaged accordingly. Allthree of the long-dislanco lines are then put in parallel to assistllie voltage and all four of the a. c. bus-bars; both sets of bothl)oards are paralleled through the cross-connecting switches underNo. 2 l)oard. The electrician encounters many pnz/.ling combinationsat such times as these, and wilhonl a minute understanding of hisswitching and load, he may be sending an enormous current througha switch. lie must have enough feeder switches on both bus-bars tocarry the current safely. When a shut-down is due to a short-circuit on local or long-distance lines, the method of starling is the same; and the orderof giving current to the numerous tenants is usually the No. tli UK IUWKR llOrSE. ! in foregrounii. No. 1 in distance. Ordinarily, only one parly is affected by a short circuit on the localservice, and that feeder is left open until the repair men report allright. A short circuit on the transmission lines, however, usually affectsthe whole system, though occasionally a Lockport breaker may dropout without shutting down everything. Should there be trouble any time on a certain line, that line iscut out, and the remaining lines carry the load. There must begreat accuracy in telephoning at these times, for the electricianmust give instructions to Tonawanda to make certain changes, anddifferent instructions must go to the terminal house at Buffalo. Healso instructs his assistant at the power-house what changes areto be made in switching in the transformer room across the this, a return call must be received from each party inter-ested. A short circuit is manifested in differing deg
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
