. The Street railway journal . 22 ins. above the lower one, carries two ofthe high-tension wires, and the third wire of the alter-nating current system is on the top of the pole. Five-inch double petticoat porcelain insulators are used. Thoseon the cross-arms are set on wooden pins, through whicha ^-in. galvanized bolt passes, extending down through thecross-arm, and being secured by a nut and washer on thelower end below the cross-arm. A similar insulator is October 4, 1902.] STREET RAILWAY JOURNAL. 563 placed on the top of the pole, but it is secured to a gal-vanized iron saddle, which sets
. The Street railway journal . 22 ins. above the lower one, carries two ofthe high-tension wires, and the third wire of the alter-nating current system is on the top of the pole. Five-inch double petticoat porcelain insulators are used. Thoseon the cross-arms are set on wooden pins, through whicha ^-in. galvanized bolt passes, extending down through thecross-arm, and being secured by a nut and washer on thelower end below the cross-arm. A similar insulator is October 4, 1902.] STREET RAILWAY JOURNAL. 563 placed on the top of the pole, but it is secured to a gal-vanized iron saddle, which sets on the top of the pole. Thetwo insulators on the upper cross-bar, and the insulator onthe top of the pole carry No. 4 bare copper wire for ththigh-tension current. Each of these insulators is locatedso that the wire it carries is 28 ins. away from the nearesthigh-tension conductor. The cross-arms are 3 ft. 4 , 4 ins. wide, and are placed 1 ft. 10 ins. apart. Theupper cross-arm is I ft. 10 ins. from the top of the TWO 400-KW INVERTED ROTARIES AT READING POWER STATION There is also a bracket carrying a Xo. 10 signal wire, forthe block system, beneath the span wire. The signal boxesare placed on the pole at each turnout, 5 ft. above thetrack level, within easy reach of the train man. The tele-phone wires, which are carried on the opposite pole line.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
