Patent ID: 8442792

Claim:
A method for calibrating a communication and measuring circuit of an AC outlet via one of an optical signal and a radio frequency identification (RFID) signal generated in close proximity by a loader, said circuit for measuring a power consumed by a load including elements selected from a group comprising one of a first socket and a terminal for applying said power to said load, at least one of a first optoport and a first RFID antenna accessed through the front of said first socket; said loader including a communication and a calibrated circuit for measuring said power consumed by one of said load and a standard load, said calibrated circuit including elements selected from a group comprising a second plug complementary to said first socket, one of said standard load and a second socket, at least one of a second optoport and a second RFID antenna accessed through the front of said second plug; said measuring circuit is programmed to calculate the power consumed by said load and to transmit a derived first value and receive a calibration command, said calibrated circuit is programmed to calculate said power consumed by said load and derive a calibrated value, receive said first value, compare with the calibrated value and communicate said calibration command for calibrating said measuring circuit when said first value and said calibrated value do not match, said method comprising the steps of: a. attaching said second plug to said first socket; b. attaching said load to said second socket; c. measuring the power consumed via said AC outlet; d. transmitting said derived first value to said loader via one of said first optoport and said first RFID antenna; e. measuring the power consumed via said loader; f. comparing the received said first value with the derived calibrated value; and g. communicating at least one calibration command with said AC outlet via one of said second optoport and said second RFID antenna when said comparing do not match.