Threephase systems use the same principle of splitting the current into outofphase components, but with three instead of two The three parts of the current are out of phase by a third of a cycle each This creates a more complicated pattern than twophase power, but they cancel each other out in the same way Each part of the current is equal in size but opposite inWiring Diagram 3 Phase Panel 8y 1 Category 8y 1; You can't reduce the neutral demand load for 3wire, singlephase, 8Y/1V or 480Y/277V circuits that consist of two line wires and the common conductor (neutral) of a 4wire, 3phase wye system This is because the common (neutral) conductor of a 3wire circuit connected to a 4wire, 3phase wye system carries about the same current as the phase
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