Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise on the care and management of steam engines, boilers and electric machinery (1922)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 1264
Fig. 5 5 0. Fig. 551 Fig. 550 pedestal panel for main and equalizer switches small capacity Fig. 551main and equalizer switches for^large capacity If this w^ere not done the fields would act like a kicking,or spark coil and their insulation be damaged. In Fig. 556 is seen the diagram of the panel… … y
