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 1407
^f^^^^^^^^^^^^ Branch ■X Circuits^ m Fig. 657 … any number of other wires, and the feeders become a partof the multiple series, multiple and three wire systems. Distributing mains are the wires from which the wiresentering buildings receive their supply. Service wires are the wires that enter the buildings. The center of distribution is a term…
