For electrical equipment, wires are necessary during operation, but each type of wire has its own maximum current load range. If the current load is abnormal and exceeds the original capacity of the wire, it will instantly increase the temperature of the wire and burn it out. The reason for this situation may be related to the lack of lubricating oil after long-term operation of the equipment, and it may also be due to the limited operating space of the equipment, which makes it difficult to dissipate heat in a timely manner. In addition, failure to clean dust and debris from the equipment in a timely manner can also lead to high temperatures, thereby threatening the safety of electrical equipment.