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A fuse is a common name for a fuse. It has the effect of short-circuit maintenance, protects the circuit and electrical equipment from damage due to short-circuit faults, and prevents fires. Once in our home circuit, metal fuses were an essential component, and later with circuit breakers, fuses are relatively rare. However, this does not mean that fuses are useless. With the advent of new materials, many new fuses have been widely used in various circuits and are responsible for short-circuit protection. Usually the fuse is composed of three parts: 1. The melt, which is the center of the fuse, and has the effect of blocking the current when it is blown. Household fuses are usually made of lead-antimony alloy; 2. The electrode, which is the melting Parts that connect the body to the circuit. Usually there are two, which must have excellent conductivity, should be tightly connected, and should not have excessive contact resistance; 3. The shell (support), the melt of the fuse is generally thin and soft, and the effect of the shell (support) is to The melt and the electrode are fixed together to become a rigid whole, which is easy to install and use, and generally has excellent mechanical strength, insulation, heat resistance and flame retardancy. Car circuits are no exception, and also require short-circuit protection. For us car owners, in a sense, the fuse is a life-saving wire. Don't underestimate it, treat it as a dispensable thing. Several common car fuses: 1. Blade fuses include: ultra-small blade fuses, small car fuses, medium car fuses, and large car fuses, depending on the additional current. The extra current is 1-40 amps (A) to the large 30-120 amps (A), and the extra voltage is 32 volts (V). 2. Forkbolt fuse gold-plated large forkbolt bolt car fuses from the Internet can be divided into: small forkbolt, large forkbolt The extra current has 30-150 amps (A) 40-800 amps (A) to L, extra voltage 32/125 volts (V). 3. Car glass tube fuses can be divided into: 6.35×30mm glass tube fuse, 6.35×31.75mm glass tube fuse, 10×38mm glass tube fuse. The extra current is 0.5-20 ampere (A) to 10×38mm 20-80 ampere (A), and the extra voltage is 32 volts (V). When the friends are using the vehicle, they will occasionally find that a single electrical appliance is not working. For example, the headlights are not on or the wipers are not moving. At this time, you should first check the fuse to see if the fuse is damaged. So, where are these fuses? What does it look like? Fuse box (fuse tray) The fuses of each circuit of a car are generally arranged in a single safety box. Different models of vehicles may have different positions of the safety box, and the appearance is a small black plastic box. In your car manual, you can find where the car fuse panel is, and most car designers will put the car fuse panel on the side of the dashboard, maybe in the engine compartment, a few cars will put it in the car inside the storage box. Check the fuses: Turn off the ignition, flip open the plastic cover, and on the reverse side of the cover the orientation, function and amperage of each fuse are marked. Generally, different fuses can be distinguished by color, for example: yellow is 20 amps, blue is 15 amps, and red is 10 amps. The fuse can be removed for inspection with a special tool inside the secure box. Damaged fuses, generally the filament will be damaged or burnt black, if not found then it may be other electrical problems. Replacement fuses from the Internet: Turn off the ignition switch to replace the fuse. When replacing the fuse, it must be consistent with the standard of the original fuse, and the current level of the fuse cannot be increased arbitrarily, nor can it be replaced with other conductive objects. If the replaced fuse blows again immediately, it means that the circuit has a short-circuit fault. Please ask a professional to remove the fault and then install the fuse. Never use an enlarged fuse standard to deal with it, otherwise it is very likely to cause a fire. After replacing the fuse, you need to test whether the car can work normally, try to start the car, if it can work normally, congratulations on success. If there is no normal operation or you are not sure, please go to a regular 4S shop to change the fuse, which is safer and more reliable. It should also be reminded that you must not use fake and inferior fuses, it is not safe at all. Be sure to choose accessories. Otherwise, spending a small amount of money may bring about a major incident.