In this paper, electric leakage and overcurrent are a cause of power outages in the home. When a power outage occurs, the supply of electricity to the home may be stopped for a long time, which hinders daily life. In addition, it is assumed that many damages due to electric leakage have occurred due to recent typhoons and heavy rains.

Therefore, the authors propose measures to reduce the power outage time due to electric leakage and overcurrent in the house and the power outage section after restoration. In order to reduce the power failure section, we propose a method in which the wiring from the circuit breaker is divided by the division switch and the divided section is interconnected with the adjacent section by the interconnection switch. By applying this method, the power failure section can be limited to the minimum section to be divided by the division switch at the minimum, and the power failure section can be reduced.