There will be many electrical equipment in the car circuit that will be connected by wires of different colors. Among them, the most important thing should not be ignored is its car fuse holder, which is called a fuse in the standard. The function of the car fuse holder is to protect the circuit (circuit) and electrical equipment from overheating damage or even fire due to short circuit and overload failure.   

When the car fuse holder is used, its main function is to protect its wiring. When selecting a fuse with a suitable size, it can protect the connected wires to a certain extent. If a device similar to a car radio suddenly flows through it current will blow its fuse.   

Under normal circumstances, there are two fuse discs in the car ball, one is located in the engine room, the equipped car fuse holder is used for cooling fans, anti-lock brake pump and engine control unit and other equipment, and the other car fuse holder is generally located in the driving in the dashboard near the operator's knee.   

The conductor of the car fuse holder is made of a metal similar to solder. In the process of use, it will have a lower melting point than the general wire itself, so the standard of the conductor must be calibrated very accurately so that it can reach the rated value. current, can generate satisfactory heat to fuse the conductor  

After the fuse is blown, it must be replaced before the circuit can work. It is necessary to replace a blown fuse with a fuse of the same amperage. The easiest way to look at a car fuse holder Z is to remove it from the socket and hook the two conductors of the fuse with a continuity tester.