Abstract

Recently, in the technical magazines, articles have appeared advocating the use of a 277/480-volt 3-phase 4-wire grounded neutral distribution system for manufacturing plants. In these articles, it is pointed out that power and lighting service can be supplied from the same feeders by connecting motors, and other large loads requiring 3-phase electric supply, to the 3-phase conductors, and lamps to the phase and neutral conductors.

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