. Electric railway journal . rmers andequipment for doubling the power plant generating volt-age to transmit at 4400 volts instead of 2200 volts. Thetotal cost of $345,000 under the first plan is inreality not a fair figure with which to compare the costof the automatic-substation plan for the condition of thefeeder lines is such that it would have been necessary • OldSubSfa Manually Operated» New Automatic SubSta in Operation orunder Construction. — Trolley Contact Wire . — Feeders(Presenf/tobe taken DonnFeeder which mil be Retained in Serviceotter Completion of Present Plan units would be us
. Electric railway journal . rmers andequipment for doubling the power plant generating volt-age to transmit at 4400 volts instead of 2200 volts. Thetotal cost of $345,000 under the first plan is inreality not a fair figure with which to compare the costof the automatic-substation plan for the condition of thefeeder lines is such that it would have been necessary • OldSubSfa Manually Operated» New Automatic SubSta in Operation orunder Construction. — Trolley Contact Wire . — Feeders(Presenf/tobe taken DonnFeeder which mil be Retained in Serviceotter Completion of Present Plan units would be useless, and while they are worth $40,-000 in the present plant, they are worth only $5,000 asjunk. This $40,000 less the junk value is chargedagainst the substation plan. But before these unitsand the feeder system can be dispensed with, a newturbo-generator is necessary. While it is essential atthe present moment to replace only the equipment tobe discarded, which has 2000-kw. capacity, a unit of ^Feeder fkwsherSubSfa. MAP OF DES MOINES CITY LINES WITHLOCATIONS OF SUBSTATIONS, SHOW-ING OVERHEAD COPPER TO BEREMOVED practically to rebuild them completelybefore additional copper could be safelystrung. This would have added not lessthan $25,000 to the amount given. Necessary Power House Changes If the costs of the rearrangementsmade necessary at the power house un-der the automatic substation plan be included, the totalcost is apparently slightly greater than the feeder plan,but this is not really the case, for the following reason:The power house is now equipped with one 2000-kw. andone 1000-kw. turbine units, and two 1000-kw. direct-cur-rent reciprocating cross-compound units. With thefeeder system taken down, these two direct-current TABLE I—DETAILED ESTIMATE OP COST OF INSTALLINGADEQUAE DISTRIBUTION SYSTEM Feeder Plan Present feeder copper, at 25 cents per pound $112,800 Additional copper necessary for proper voltage regula-tion, at 25 cents 172,500 Two 1000-kw. rotary
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