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The Preliminary Report and Estimate
Initial and Annual Costs
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alternating-current amperes apparatus auxiliary average boiler bonds bus section cable capacity carry cent reactance circular mils coal coil conductor contacts copper cycles depreciation depreciation reserve determined Detroit Edison Company distribution economic efficiency Elec Electric energy engineer equipment expense fault feeder fixed charges flow fuel hydro hydroelectric increase installed insulation interrupting investment kilovolt kilovolt-amperes kilowatt kilowatt-hour labor load curve load factor losses machine marginal cost maximum mile milso normal ohms oil circuit breaker operating cost output overcurrent parallel peak phase plant location power factor power house power plant power stations protection reactors relay saving short short-circuit current shown in Fig shows single-phase steam plant substation supply switch synchronous condensers taxes three-phase tion trans transmission line trip turbine underlying cost units utilization voltage volts water turbine wire zero