. The street railway review . , would yet be in danger of fusing. After , it was discovered that the platinum or anywire or refractory material, even when of considerablelength, if surrounded by finely powdered fire clay or sim-. connection on the truck. The method of wiring adoptedby the company is shown in figure 4, and for street carservice, the electrical resistance of the heaters is so adjus-ted that on a 450 volt circuit they use three amperes ofcurrent. When, therefore, the handle of the switch Ais turned on L (shunt from line connection) and Bclosed, the heaters are thro
. The street railway review . , would yet be in danger of fusing. After , it was discovered that the platinum or anywire or refractory material, even when of considerablelength, if surrounded by finely powdered fire clay or sim-. connection on the truck. The method of wiring adoptedby the company is shown in figure 4, and for street carservice, the electrical resistance of the heaters is so adjus-ted that on a 450 volt circuit they use three amperes ofcurrent. When, therefore, the handle of the switch Ais turned on L (shunt from line connection) and Bclosed, the heaters are thrown in series of two for a shorttime, only causing the use of six amperes of current ineach set. When a sufficiently high temperature has beenattained in these, which will be in fifteen or twenty min-utes, the handle A is turned on C (ground connec-tion), and B opened. This causes them to be thrownin series of four, when the heat will be maintained inthem for a long time without being appreciably lowered,with the use of only three amperes of current. The process of warming the cars is supposed to takeplace in the morning before the car leaves the shed, w henthere is no other use for the current. The normal use of 226 the current, however
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
