Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise .. (1916)
Swingle, Calvin F. (Calvin Franklin), b. 1846 · Chicago, F.J. Drake & company · leaf 1385
or eight feet in the earth. A more satisfactory method of making a ground is todrive a number of 1-inch iron pipes six or eight feet intothe earth at several points about the station, connectingall these pipes together by means of copper yriie or pref -erably copper strip. A quantity of salt should… … Fig. 643 HORN GAP INSTALLATION FOR 35,000 VOLT ALUMINUM LIGHTNINGARRESTERS, SCHENECTADY POWER CO., SHOWING ROOF EN-TRANCES TO STATION AND WALL ENTRANCES TO LIGHTNINGARRESTER TOWER. ONE SET OF ARRESTERSDISCONNECTED Lightning Arresters 1351 and also to any water mains, metal flumes, or trolley…
