. Journal of electricity, power, and gas . es. It has been the aim of the company ro pro-vide an absolutely complete line ot pot heads for light andpower work. It therefore offers pot heads (or single ormultiple-conductor cables up to 10 conductor cables, detach-able or non-detachable, combination pot heads and series cut-outs, combination pot heads and subway cutouts and any otherspecial forms which engineers may require up to 33,000 volts. The pot heads for single-conductor are known as type S(illustrated in Fig. 1), suitable for cables up to 00, and thetype TS (illustrated in Fig, 2), inten
. Journal of electricity, power, and gas . es. It has been the aim of the company ro pro-vide an absolutely complete line ot pot heads for light andpower work. It therefore offers pot heads (or single ormultiple-conductor cables up to 10 conductor cables, detach-able or non-detachable, combination pot heads and series cut-outs, combination pot heads and subway cutouts and any otherspecial forms which engineers may require up to 33,000 volts. The pot heads for single-conductor are known as type S(illustrated in Fig. 1), suitable for cables up to 00, and thetype TS (illustrated in Fig, 2), intended for cables largerthan 00. The type TS is provided for any cable up to1,000,000 cm. The pot heads for multiple-conductor cables areknown as form L for voltages up to 7500 (shown in Pig. 3),and form M for voltages from 7500 to 15,000 (shown inFig. 4). Both of these types of pot heads are made for two,three or tour-conductor cable. Form L and form M pot heads are furnished withadapters by which the lower end of the pot head may be fitted. The use ot a porcelain sleeve with an insulator type ofcap solved the problem of exposure to the weather. Thehappy combination of suitable current carrying parts containedwithin the porcelain produced a device which is detachable;that is, without tools of any kind, an operating man may dis-connect the circuit by the simple act of lifting the cap fromthe tube. When the circuit is to be closed the cap is replacedand the connection is simultaneously made. This form alsopermits the installation of this device in manholes, as the to any size standard wrought-iron pipe from 1% to 3 in. insidediameter if desired. The station type ot pot head (shown inFig. 5) consists of a porcelain lid and band which is supportedon a threaded iron collar so designed that it may be attacheddirect to the sheath of the cable. The combination pot headsare shown in Figs. 6 and 7; Fig. 6 being a combination pothead and series arc cutout. This device is small enough tobe i
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Keywords: ., bookcentury1800, bookdecade1890, bookidjo, booksubjectelectricity
