Patent ID: 8432175

Claim:
A system for evaluating performance of a supply circuit for electric vehicle charging, the system comprising: a charging cable for electrically connecting between a supply circuit and a vehicle circuit, the charging cable including a hot conductor, a neutral conductor and a ground conductor; at least one voltage sensor for providing at least one of a line voltage signal and a neutral voltage signal, the line voltage signal being indicative of a voltage potential between the hot conductor and the neutral conductor, and the neutral voltage signal being indicative of a voltage potential between the neutral conductor and the ground conductor; a current sensor for providing a line current signal indicative of a current along at least one of the hot conductor and the neutral conductor; and a controller in electrical communication with the at least one voltage sensor, and the current sensor, the controller configured to: receive the line current signal and at least one of the line voltage signal and the neutral voltage signal, and compare at least one of the line voltage signal, the neutral voltage signal, and the line current signal to predetermined data to evaluate supply circuit performance.