Abstract: An electric cable through which power is provided from a power supply device to an electric device, includes an electrical connecting line group having power supply lines for supplying power by a plus side power supply line and a minus-side power supply-line, and a temperature measuring line to wire the temperature measuring line and the power supply line in parallel disposition, a plug disposed to at least one end of the electrical connecting line group, and a thermal sensitive element connected to the power supply line and the temperature measuring line, and disposed inside the plug.

Abstract: A direct current power source portion for converting inputted alternating current power to direct current power of a predetermined voltage, a plus terminal and a minus terminal connected to the direct current power source and outputting the direct current power, a communication portion for detecting a first input voltage value preset in an electric device, a controlling portion for setting voltage of the direct current power outputted from the direct current power source portion at the first input voltage value inputted from the communication portion, and a remaining voltage processing portion having a capacitor connected in parallel between the plus terminal and the minus terminal and smoothing the direct current power, the remaining voltage processing portion discharging electric charge stored in the capacitor based on the first input voltage value.