. The street railway review . of power consumption it was neces-sary to compute the energy taken for the car lighting and heating,which was not included in the main circuit wattmeter arc 35 lamps per car, taking approximately kw. with 550volts; the headlight takes kw.; the heaters are arranged infour groups; each group is controlled by a switch and takes kw. By observing the times when light and heat were turnedon and off, the total energy so used on all cars was calculated asbeing, for car lights, 28 ; for headlights, 17 ; forheaters, 182 ;
. The street railway review . of power consumption it was neces-sary to compute the energy taken for the car lighting and heating,which was not included in the main circuit wattmeter arc 35 lamps per car, taking approximately kw. with 550volts; the headlight takes kw.; the heaters are arranged infour groups; each group is controlled by a switch and takes kw. By observing the times when light and heat were turnedon and off, the total energy so used on all cars was calculated asbeing, for car lights, 28 ; for headlights, 17 ; forheaters, 182 ; total for light and heat, 226 The obtaining of wattmeter readings on the cars involved the solu-tion of the problem of so suspending the meters as to protect thejewels from damage by the vibration and jarring of the cars. ThisAas done by suspending each meter in a sort of cradle by two coiledsprings of stiff steel wire, from the car roof. While this methodremoved satisfactorily the vibration, the swinging round of the. C.\R TEST RECORD ON INTERl-RB.\N TR.\CK. the Lancaster division, and later during dry weather on the Circlc-villc division, are given in the following table: Amperes Amperes Length, on closing Steady per Weather. Track. miles. circuit, current, mile. Wet. Columbus to . 170 40 Wet. Columbus to Ashville 40 13 .85 Wet. Obetz to Canal Winchester 40 19 Wet. Obetz to Hookers 144 :20 Dry. Ashville to Circleville *i *l .012 Dry. Rees to Ashville 22 12 meter was so great as to necessitate someone steadying it con-tinually. It also caused some doubt as to whether the readingsmight not be affected by the movement of the meter. A calibrationmade later with the meters suspended similarly and bounced aroundeven more violently by hand, showed that there was no appreciableeffect produced by the motion. Calibrations of wattmeters usedwere made, both before and after the test, which showed no appre-ciable c
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
