Comparison of A.C distribution with D.C distribution

A.C distribution D.C. distribution
3 phase A.C distribution system requires 4 wires. D.C distribution system requires only one wire with the ground as a return path.
The voltage at the far end is a less i.e. voltage drop in the distributor is more to the presence of inductance. Therefore the cost of erection is less than the A.C system.
The efficiency of power transmission is less . Voltage drop is less in the distributor due to the absence of inductance voltage regulation is good.
3phase 3 wire 4 wire are the types of the A.C distribution system. The transformer cannot be used for improving voltage level.

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