. Journal of electricity . is bushing has received the approval of ] the inspection department ofthe Associated Factory ofMutual Fire Insurance Com-panies. The scheme providesthat all circuits, generallyabove 600 volts, be broughtto the housing in enclosedcables. This cable is aboveground, in a metal duct whichis securely fastened to thetransforming cover, all ex-posed parts being at groundpotential, and water-proof feature is essential, from the Underwritersstandpoint, in making it safe for firemen to play streams oilburning buildings near the transformers. The lower portion o
. Journal of electricity . is bushing has received the approval of ] the inspection department ofthe Associated Factory ofMutual Fire Insurance Com-panies. The scheme providesthat all circuits, generallyabove 600 volts, be broughtto the housing in enclosedcables. This cable is aboveground, in a metal duct whichis securely fastened to thetransforming cover, all ex-posed parts being at groundpotential, and water-proof feature is essential, from the Underwritersstandpoint, in making it safe for firemen to play streams oilburning buildings near the transformers. The lower portion of the bushings is similar to thestandard General Electric high voltage bushing, while theupper portion is shown by the illustration. Ample clearanceis provided in the housing. The transformers receive stand-ard high potential test with housing position and without anytaping or other insulation on the bushings. The use of thesetransformers is only limited, as regards voltage, by the volt-age limits of the underground The new type of bushing i October 15, 1920] JOURNAL OF ELECTRICITY 397 NEW CONDUIT BODIES FOR EXPOSED WIRING Four representative outlet-box manufacturers have re-cently brought out a line of pressed steel conduit boxes withknockouts—a line so highly standardized that virtually thewhole range of exposed conduit wiring requirements for%-in. and %-in. conduits is compassed with but three basicbodies and two connectors, which, when combined in any formdesired, result in a conduit body. To meet the requirements of exposed wiring a conduitbody must be rigidly connected to the conduit vrithout sup-port. The connector affords just such a rigid arrangement,according to the statement of the manufacturers. The twoconnectors employing the Chase nipple features, one designedfor %-in. conduit and the other for %-in. conduit, both fitthe one size of knockout used in all the three bodies. These conduit bodies are adaptable to virtually anystandard make of wiring device. W
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectelectricity, bookyear
