=Classification=—series system—danger in series arc light system—constant current system—parallel system—arrangement of feeder and mains in parallel system—series-parallel system—center of distribution—=Edison three wire system=—evolution of the three wire system—balanced three wire system—balancing of three wire system—=copper economy in three wire systems=—Dobrowolsky three wire system—modifications of three wire system—three wire storage battery system—three wire double dynamo system—three wire bridge system—three wire three brush dynamo system—Dobrowolsky three wire system—three wire auxiliary dynamo system—three wire compensator system—=extension of the three wire principle=—five wire s…
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