Twentieth century hand-book for steam engineers and electricians with questions and answers; a practical non-technical treatise .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 1287
o O {O ( ri \ /-\ i^-\ 1 - CJ 1 2 f u u 2 3 O ( ) o O ( ) o o o 3 1 o < > o o < > o o o E C) c ) o) o) o O ( o co c ) ( > o o 23 o c ) ^ ) o o o M 3 • O i ► o O i ► o o o Fig. 581 1258 Steam Engineering trates the successive steps for transferring the lamps oftwo independent circuits… … Fig. 582 The location of plugs is shown by the black circles, whichindicate that the corresponding bars of the horizontal andvertical rows are connected. Circuits No. 1 and No. 2, running independently fromgenerators No. 1 and No. 2, respectively, are to be trans-ferred to run in series on…