A fuse, literally, refers to an electrical appliance that fuses the melt with the heat generated by itself and disconnects the circuit when the current exceeds the specified value. The fuse is based on the current exceeding the specified value for a period of time, melts the melt with its own heat, and then disconnects the circuit; a current protector made of this principle. In life, we are accustomed to calling fuses fuses, and car fuses are a type of fuses. Let's take a look at the damage factors of car fuses and some precautions for replacing fuses. Let's understand together! Under what circumstances can you confirm that the car fuse is blown?

When electrical appliances such as cigarette lighters, windows, air conditioners, and lights do not work alone, and the sound of current or relay action is heard when the switch is turned on, it can be roughly concluded that the fuse is broken.

The damage factors of car fuses mainly include the following aspects: 1. Privately modified headlights Many modified car enthusiasts like to modify high-power headlights or xenon lamps. However, if the power of the lamp is larger than the original design or a larger load, the fuse blowing is inevitable. It is recommended that if you are not professional in car modification, you should not mess around. 2. Modification of high-power audio Some car owners want to have a perfect hearing effect, and will modify the audio. But when the power and complexity of the speaker is greater than the original design, the fuse will also blow. So no matter how tricky your ears are, please bear with it, please take care of the feeling of the fuse? 3. Washing the engine compartment with water Many people's car washing methods are wrong. For example, in summer, many people will request to flush the engine compartment with a water gun when washing the car, and cleaning the engine compartment with a water gun with such a high water pressure will also easily form a short circuit of the circuit. , and then the fuse is very damaged. 4. The cigarette lighter uses high-power electrical appliances, such as an inverter, which can change the 12V power supply of the cigarette lighter to 220V, which means that high-power electrical appliances can be used after use, but doing so will cause the fuse to accept too high The power is too large, and the fuse is burned out.

The precautions for replacing fuses are as follows: 1. To replace a fuse of the same specification, if a small current is used, it will break soon; if a large current is used, the fuse will not be easily disconnected when a short circuit occurs, and Simple fire. When disassembling, pay attention to the amperage mark on the top of the fuse. If the fuse is burned out and the ampere value cannot be recognized, we can also judge by its color. International standards: 2A gray, 3A purple, 4A pink, 5A orange, 7.5A brown, 10A red, 15A blue, 20A yellow, 25A colorless and transparent, 30A green, 40A dark orange. 2. There are many fuses in the fuse box of the registered seat. Since many optional equipment lines are reserved on the car, there are also many empty positions on the fuse box. If the fuse is inserted in the empty position, it will not work at all. You should check the insurance carefully. The English-language electrical appliances on the box should be re-installed.