with no neutral, a three-phase supply with no neutral and the same phase-to-phase voltage can transmit the same power by using just 0.75 times as much conductor material.

Three-phase supplies have properties that make them desirable in electric power distribution systems:
* The phase currents tend to cancel out one another, summing to zero in the case of a linear balanced load, which allows a reduction of the size of the neutral conductor because it carries little or no current. With a balanced load, all the phase conductors carry