ELECTRICITY DISTRIBUTION SYSTEM

PROBLEM TO BE SOLVED: To provide an electricity distribution system for safely supplying the power using a DC power from a DC power supply and an AC power from an AC power supply without increasing the size of the system, which reliably performs a leakage detection.SOLUTION: The electricity distribution system has single-phase three power feeding paths grounded by a neutral line and includes an AC distribution section that distributes an AC power from an AC power supply to a power feeding path and a DC distribution section that distributes a DC power from a DC power supply. The AC distribution section has a first leakage detection section that detects leakage current on the AC power feeding path. The DC distribution section has: a non-insulated DC-AC converting section that converts a DC current into an AC current; and a second leakage detection section which is connected to the DC power supply or the DC-AC converting section to detect a DC current leakage current and a mix leakage current of a DC current and an AC current in the DC power feeding path. The second leakage detection section detects a DC current leakage current or a mix leakage current at the same time or prior to the detection of the leakage current by the first leakage detection section.