. Journal of electricity. mingequipment. The cost of the base concrete poles wasapproximately $30 each. A constant — current series — lighting system isused. Energy is taken from the city distributingmains on 2300 volt lines to the transformers, and goesout at 2600 volts single-phase on double steel tapedNo. 8 stranded cable. The wiring arrangement is suchthat eight 2075 foot lengths of this cable were usedwithout splices, all connections being made in the ter- Laurelhurst Park—note the com-fort station at the right in whichthe substation is housed. minals within the standards into which the m
. Journal of electricity. mingequipment. The cost of the base concrete poles wasapproximately $30 each. A constant — current series — lighting system isused. Energy is taken from the city distributingmains on 2300 volt lines to the transformers, and goesout at 2600 volts single-phase on double steel tapedNo. 8 stranded cable. The wiring arrangement is suchthat eight 2075 foot lengths of this cable were usedwithout splices, all connections being made in the ter- Laurelhurst Park—note the com-fort station at the right in whichthe substation is housed. minals within the standards into which the main cableitself is looped. The current is carried in the distribut-ing lines at amp, and a single 400 candle powertungsten lamp is used on each standard in a 20 inchglobe. It was arranged that approximately 100 standardscould be served by each transformer set. Comfort stations are used to house the tub trans-formers and other substation apparatus. They are con-structed both of wood and cement and consist of four. Special device tor keeping- strain off joints in soft ground wheresplice is made at base of standard—Terwilliger Boulevard, Portland rooms—one for tools, two for toilets, and one for thesubstation, the size of the substation room being 6feet by 8 feet. The electrical contractors installing the steelcable, which was placed in a trench, encountered sev-eral conditions where it was necessary to overcomethem by devising special apparatus. In many placesrubber covered wire had to be spliced to steel taped
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Keywords: ., bookcentury1900, bookdecade1910, bookidjo, booksubjectelectricity
