Matching selection of line fuses The fuses or fuses are usually connected in series in the line to protect the wiring harness and electrical equipment. This protection generally refers to overcurrent protection. When there is an unacceptable large current passing through , so that the line can be disconnected in time to protect other components from being burned out. For the engine wiring harness, when selecting fuses or fuses, such as the engine ECU and the cab electrical system, it has a great impact on the performance of the whole vehicle. Batteries, etc.; electrical devices that are easily disturbed by other equipment must be provided with fuses separately; before the fuses or fuses are blown, the insulation layer of the wiring harness cannot be melted or burned.
The selection of the fuse wire must consider the current characteristics of the load and the working environment of the fuse wire. If the fuse value is selected too small, the fuse wire will be easily blown, and the system cannot work normally; to protect the circuit.