. The Street railway journal . shown in Table I. From this table it will be seen that the conditions with re-spect to load are almost identical in both cases. The re- Section. Table V. Average Load onSection. Table VI. Average Load onSection. Table VII. Average Load onSection. Table VIII. A\crageLoad onSection. 70 71 73 90 91 Two- Tlireewire. 181, 232,6455,6 Two- Three-wure. 199113 111284 285445 404249 277 1325 1276 Two- Three-wire, 267190 199301 235488 536384 370 1568 1607 Two- Three-wire. 321170,6 199280 236627 600372 38
. The Street railway journal . shown in Table I. From this table it will be seen that the conditions with re-spect to load are almost identical in both cases. The re- Section. Table V. Average Load onSection. Table VI. Average Load onSection. Table VII. Average Load onSection. Table VIII. A\crageLoad onSection. 70 71 73 90 91 Two- Tlireewire. 181, 232,6455,6 Two- Three-wure. 199113 111284 285445 404249 277 1325 1276 Two- Three-wire, 267190 199301 235488 536384 370 1568 1607 Two- Three-wire. 321170,6 199280 236627 600372 380 Totals,, , 1735 6 1736 turn drop under two-wire operation, represented by the fullline, was reduced 83 per cent by three-wire operation asshown by the dash line. Fig. 2 gives the similar results of a test which was re-peated on another day. Table II. gives the loads in theseveral feeder sections. Fig. 3 gives the potential relation between pipe and railalong the line of the first test-wire. The full line repre-. different days. The current relations in the several shadedfeeder sections for Figs. 4 and 5 are shown in Tables V. Attention is called to two sets of results, in each caseunder three-wire operation. While the upper set of obser-vations was being taken, section 70 was feeding in the usualmanner; whereas, while the lower set of observations wasbeing taken it was fed from the other side of the three-wiresystem. Figs. 6 and 7 show the potential relations on the pipealong the line of the second test-wire under two-wire andthree-wire operation, and it is clearly seen that in thesecases the potential differences between pipe and rail haveIseen almost eliminated. The load relations of the sectionswhile these observations were being taken are shown inTables VI. and VII. Fig. 8 gives the return drop along the line of the thirdtest-wire. While the three-wire system was in operation sec-tion 70 was fed part of the time from one side and the restof the time f
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
