Electric device, electric device system, method to detect arc fault in the same

A method to detect an arc fault in an electric device including a plurality of loads and an arc fault detection device to output arc signal detection information when an arc signal has been input from a wire harness connected to the plurality of loads, the method comprising:

• sequentially supplying, when the arc signal detection information has been input from the arc fault detection device, Alternating Current (AC) power to each of the plurality of loads during a preset time;
• and
• detecting a load at which an arc fault has occurred from among the plurality of loads.

A method to detect an arc fault in an electric device system including a plurality of electric devices and an arc fault detection device installed on a distributing board to output arc signal detection information when an arc signal has been input from a wire harness connected to the plurality of electric devices, the method comprising:

• sequentially supplying, when the arc signal detection information has been input from the arc fault detection device, Alternating Current (AC) power to each of the plurality of electric devices during a preset time;
• and
• detecting an electric device at which an arc fault has occurred from among the plurality of electric devices.