The appliance is not in use but the plug is still plugged in. This may also cause a fire!? There is a phenomenon called "contamination-caused conduction." Between the two pins (poles) of the plug, under normal conditions, although there is an insulating resin to block the two poles, it will not be energized. However, if dust and hair accumulate on the plug, and moisture is attached due to humidity, it may cause a circuit between the poles and power ups. And this phenomenon will not cause the fuse to open, which will cause a fire! It is important to regularly clean the plug with a dry cloth. When inserting the plug, pay attention to the cleanness of the plug. In addition, this is why when the appliance is not used for a long time or when we go out, remember to unplug the electrical plug ~

※ the picture from TPC Fan Page