. Electrical world. -wire system throughout thebuilding. Insulated cables are carried up from the sub-stationswitchboard, and extend entirely around the building, supported byporcelain insulators on the trusses. Different circuits are tappedin as the exhibitors may need for power or light, and the wires aresupported on cleats attached to the girders. These run to a postin the exhibitors space and down to a switchboard. For decorative lighting the cables run to the roof of the the balustrade above the cornice line are switchboards, and fromthese the lighting feeders extend around th
. Electrical world. -wire system throughout thebuilding. Insulated cables are carried up from the sub-stationswitchboard, and extend entirely around the building, supported byporcelain insulators on the trusses. Different circuits are tappedin as the exhibitors may need for power or light, and the wires aresupported on cleats attached to the girders. These run to a postin the exhibitors space and down to a switchboard. For decorative lighting the cables run to the roof of the the balustrade above the cornice line are switchboards, and fromthese the lighting feeders extend around the entire circumferenceof the building. The small circuits are connected at convenientpoints and run to the columns, flag staffs, or along the cornice wiring is concealed where its presence would detract from theappearance of the structure, and in such places rubber-covered wireonly has been used, and is brought to the surface through porcelaintubes. In such cases the sockets are attached to the woodwork and. FIG. I.—COLUMN ALONGSIDE OF L.\G00N. embedded in the staff so as to appear a portion of the column orornament. This work has been done since last summer and fall and toprevent deterioration during the winter the sockets were filled witha tar composition which was readily removed before the lamps wereput in place. Along the cornice lines and other places too remoteto notice the circuits are carried on porcelain cleats, and in suchcases slow-burning weather-proof insulation was used. The arc lights within the building are in series on a 3,500-volt,50-cycle circuit. Except in the Electricity Building, the sub-stationsare enclosed in brick structures to reduce the fire risk to a all this work is for temporary purposes only, it has beenso well planned and executed that when the lights were turned onand the circuits tested, not one serious flaw was found. One of the interesting and novel features of the interior lightingis the application of Nernst lam
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectelectri, bookyear1883
