. The street railway review . f theconduit system with the idea of separating them from any othercables which may subsequently be installed. They are carriedaround the sides of the manholes in racks. The minimum radiusof bend in this type of cable is iS in. Where exposed in the man-holes and at the sub-stalion terminals, the cables are wrapped witha layer of hard rolled asbestos mill board !-s in. thick. Outside ofthe asbestos mill board there is a wrapping of asbestos listing twoin. wide, laid on until it averages fs in. thick. The whole is thenwrapped with galvanized iron tape 1 64 in. thick
. The street railway review . f theconduit system with the idea of separating them from any othercables which may subsequently be installed. They are carriedaround the sides of the manholes in racks. The minimum radiusof bend in this type of cable is iS in. Where exposed in the man-holes and at the sub-stalion terminals, the cables are wrapped witha layer of hard rolled asbestos mill board !-s in. thick. Outside ofthe asbestos mill board there is a wrapping of asbestos listing twoin. wide, laid on until it averages fs in. thick. The whole is thenwrapped with galvanized iron tape 1 64 in. thick and J4 in. wide,laid on with edges overlapping. At each manhole, there is a strip then arranged them so that liny were properlj ; ind they were sunk lour feet into the mud by means of a water jet, supplied Iiv pumps at 100 lb. pressure. The high tension cables wire all manufactured bj the GeneralElectric Co. and all except the submarine cables were drawn and installed complete and ready f r 1 peration by this com-. STRAIN POLE AND ARRESTER HOUSE AT DUNTON. of sheet copper sweated on to the lead sheath and brought outthrough the wrappings to allow of grounding the cable should it benecessary to protect it from electrolysis. Before the cables werepulled into the ducts, a wooden mandrel 3 ft. long and 3% in. indiameter was pulled through to insure a clear passage, At the Jamaica Bay drawbridges, the armored cables were laidacross the channel and allowed to settle to the bottom. A diver
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
