. Electric railway journal . gine rooms equipped with generating units ex-hibiting great variety both in respect of type and outputwas still further complicated by the necessity of provid-ing for the utilization of a large amount of power ex-pected to be transmitted from the water-power plant ofthe McCall Ferry Power Company on the Susquehanna,and by the necessity for continuing the provision for pos-sible interchange of power in case of emergency with theWestport power plant of the Consolidated Electric Light& Power Company. After careful consideration of theconditions, both immediate and pro
. Electric railway journal . gine rooms equipped with generating units ex-hibiting great variety both in respect of type and outputwas still further complicated by the necessity of provid-ing for the utilization of a large amount of power ex-pected to be transmitted from the water-power plant ofthe McCall Ferry Power Company on the Susquehanna,and by the necessity for continuing the provision for pos-sible interchange of power in case of emergency with theWestport power plant of the Consolidated Electric Light& Power Company. After careful consideration of theconditions, both immediate and prospective, it was decidedto erect in engine room No. 1, at Pratt Street power house,a switchboard structure arranged for the ultimate installa-tion of all switch gear, busbars, cables, control apparatusand instruments required not only by the present plant, butby the maximum power equipment which can be constructedon the land owned by the company at Pratt Street, andby a possible 40,000 kw of power from an outside Baltimore Switchboard—View in Basement The new switchboard is now in successful operation,and it is now possible to supplement the article printed inthe issue of May 9, 1908, by a description of this remark- April 24, 1909.] ELECTRIC RAILWAY JOURNAL. 763 ably compact, flexible and effective organization of switch-ing apparatus. The arrangement of the switchboard is such that nowires cross each other, and the runs arc, without excep-tion, short and direct. From the basement, where all thefeeders leave, up to and throughout the structure, eachconductor carrying high-tension current is in a compart-ment by itself. The switching structure proper is 25 ft. wide, about 85ft. long, three stories and basement in height, and is en-closed by a brick wall. The basement is used for all thefeeder ends and series transformers required by first floor is used for the main busbars, the groupfeeder busbars, feeder oil switches, and for the leads fromthe alternators w
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