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Power distribution systems play an important role in modern society. Proper outage root cause identification is often essential for effective restorations when outages occur. This paper reports on the investigation and results of two classification methods: logistic regression and neural network applied in power distribution fault cause classifier. Logistic regression is seldom used in power distribution fault diagnosis, while neural network, has been extensively used in power system reliability researches. Evaluation criteria of the goodness of the classifier includes: correct classification rate, true positive rate, true negative rate, and geometric mean. Two major distribution faults, tree and animal contact, are used to illustrate the characteristics and effectiveness of the investigated techniques.