. The street railway review . SOUTHERN MICHIGAN RAILWAY CO. CONCRETE UNDER-CROSSING WITHTHE MICHIGAN CENTRAL R. R. up the pressure to volts for transmission to the sub-station,17!^ miles distant. The high potential wires from the secondaryside of the transformers are mounted on standard line insulatorscarried on a hardwood rack. From this rack the wires pass tothe gable of the roof and out through the end wall of the build-ing to the transmission line on the poles. A bank of lightningarresters is mounted on the end wall immediately under the out-going wires. The high-tension transmissio
. The street railway review . SOUTHERN MICHIGAN RAILWAY CO. CONCRETE UNDER-CROSSING WITHTHE MICHIGAN CENTRAL R. R. up the pressure to volts for transmission to the sub-station,17!^ miles distant. The high potential wires from the secondaryside of the transformers are mounted on standard line insulatorscarried on a hardwood rack. From this rack the wires pass tothe gable of the roof and out through the end wall of the build-ing to the transmission line on the poles. A bank of lightningarresters is mounted on the end wall immediately under the out-going wires. The high-tension transmission line consists of three No. 4 hard-drawn copper wires mounted at the top of the trolley poles. Thesewires are arranged in the form of a triangle 34 in. on a side. As. SUB-STATION AT NILES COVERING GROUND SPACE OF l6 X l8 ON SECOND FLOOR. only one circuit is carried on this pole line the upper wire ha- it*,insulators set on pole-top pins. The two lower wires are car-ried at the ends of a standard cross arm. The sub-station is located at the rear of the interurban officeand waiting room in Niles. As this location is near the center ofthe city and real estate here has a comparatively high value, an interesting interior sub-station arrangement wa- a I 0 econ-omize ground area. The sub-station building is of brick andconcrete-steel construction with a floor area of but 14x16 ft. Thebuilding is two stories high and of a plain design. The high-ten-sion wires enter the upper story of the building through wall in-sulators and there connect with lightning arresters and hand-
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
