Why do fuses often break in household electricity?

Fuse. Reasons for breaking: 1. Overload operation, there are high-power electrical appliances at home, try to minimize the use of high-power electrical appliances at the same time 2. There may be leakage in the home line, such as wire skin damage, short circuit to the ground, the current is very large at this time, so the fuse is broken.

Circuit replacements are required as the lines deteriorate. 3. Phase-zero short circuit This situation is relatively rare, that is, there is contact between the fire zero line 4, the problem of household appliances themselves, there is leakage, which can be eliminated one by one, for example, as soon as the fuse of the electrical appliance is opened, it can be judged that the problem of the electrical appliance is a problem with the electrical appliance itself or a problem with the line connected to the electrical appliance. If it is not caused by leakage, it can be judged that it is a problem of excessive power of electrical appliances, I hope it will help you.

The problem of your fuse breaking has been solved.

When the circuit temperature is too high, the fuse blows to protect it....Pay attention to several high-power electrical appliances not to be used at the same time, otherwise the fuse will break frequently.

There are many electrical appliances in the house at the same time, (if you are not afraid of burning the watch, you can replace it with aluminum wire....)It is best not to turn on a few electrical appliances or electric heaters and other electric heating equipment at the same time.

The maximum current usage of your electrical appliances exceeds the maximum bearing capacity of the fuse wire, and the limit of the fuse is * times the normal electrical current.

Reasons: 1. The power of the socket is too small;

2. The wire does not match the high-power plug-in;

3. The fuse is too thin;

4. The voltage is not enough, or the voltage is unstable;

5. When using multiple electrical appliances in the spring, the voltage is too high and the fuse is blown out;

6. There is a place where the contact is not real or oxidized at the line or knife switch.

Solution: 1. 30A fuse or fuse can be selected;

2. Tighten all the binding posts with screws, including the screws at both ends of the fuse;

3. If the fuse is still burned out in the above two points, check whether the place of the line joint is firm, and whether the socket and the line are not.

1. The reason for the fuse breakage: overload operation, there are high-power electrical appliances at home, try to minimize the use of high-power electrical appliances at the same time;

2. There may be leakage in the home line. For example, the wire skin is damaged, and the current is very large at this time, so the fuse is broken, and the circuit needs to be replaced when the line is aging;

3. Phase-zero short circuit, which is relatively rare, that is, there is contact between the fire zero line;

4. The problem of household appliances themselves, there is leakage, which can be eliminated one by one. For example, if the fuse of the appliance is broken as soon as you turn it on, you can judge the problem with the appliance, the appliance itself, or the wiring connected to the appliance.

5. Note: The problem of electrical wiring causes a short circuit, if it is not caused by leakage, it can be judged as a problem of excessive electrical power.

6. Find out the short circuit point, deal with it, and replace it with insurance. If you change the insurance directly, it will definitely be useless. It's useless to change a thousand fuses, and if it doesn't work, find an electrician.

No. Because, the fuse is made of a lead-antimony alloy with high resistivity and low melting point, which is characterized by high resistivity and low melting point.

Under the same external conditions, copper or iron wire has less resistance, less heat is generated, and the melting point of copper or iron is higher.

It is not easy to fuse when the circuit has a fault of excessive current, and it cannot protect the circuit.

If the fuse in a home circuit is broken, can you replace the fuse with copper or iron wire? Why.

When you are using electricity, the fuse suddenly blows, at this time, it may bring a lot of inconvenience to your life and work, so many people often use iron wire or copper wire instead of fuse in order to ensure uninterrupted power. In this way, iron wire and copper wire are indeed not easy to fuse, but it is because they are constantly melted that they are easy to cause a lot of electrical accidents. The function of the fuse is to protect the line and electrical equipment.

When the power supply grid fails or due to the circuit behind the fuse short circuit and other abnormal conditions, the current flowing into the fuse, wire and electrical equipment will increase rapidly, because the current exceeds the current value of the fuse allowed to pass, so the fuse blows, thereby cutting off the circuit and protecting the safety of the line and electrical equipment. Due to the large amount of current allowed by iron and copper wires, it is extremely difficult to fuse. When the current in the line and electrical equipment is very large, it is still impossible to cut off the circuit, which often leads to the burning of the line and the damage of the electrical equipment, and even leads to disasters, and may also cause power outages due to the action of local protection components of the power grid.

Therefore, the fuse can not only not be replaced by iron wire and copper wire, but also the corresponding specifications should be selected according to the requirements of the circuit and equipment, and multiple fuses with a small melting amount cannot be used in parallel together.

Hail in the hall can indicate that the electricity load at home is normal. There are three reasons why a fuse blows:

1. It is an overload of volts, and the household electricity load is too large to cause overload, so that the fuse is blown up.

2. Poor contact.

3. It is a short circuit, if it is tripped as soon as the fuse is closed, it may be a short circuit. From the above three points, it can be seen that a blown fuse cannot indicate that the electrical load at home is normal.

The function of the fuse is to protect the circuit (line) and electrical equipment, in order to prevent overheating damage due to short circuit or overload failure, and even to protect the electrical equipment.

If the fuse is broken at home when using high-power electrical appliances, it means that the circuit current is large, and the maximum allowable current of the fuse is less than the circuit current.

In order to function properly with the electrical appliance, the maximum current allowed to pass through the replaced fuse should be greater than the maximum current allowed to pass through the original fuse.

The fuse should be thicker than the original fuse, and the fuse that is twice as thick as the original fuse should be used together, and the replaced fuse should be thicker than the original.

Therefore, it is possible to replace the fuse that is twice as thick as the original fuse and use it together.

It mainly plays the role of overload protection. If the fuse is correctly placed in the circuit, the fuse will fuse itself to cut off the current when the current rises abnormally to a certain height and heat, thus protecting the safe operation of the circuit.

Invented by Edison more than 100 years ago, the fuse was used to protect the expensive incandescent lamps at the time, and with the development of the times, the fuse protected the power equipment from overcurrent and overheating, and avoided serious damage caused by internal failures of electronic equipment.

The fuse is made of lead-antimony alloy with high resistivity and low melting point, characterized by high resistivity and low melting point, the melting point of the fuse on the home circuit should be designed between 300 and 500 degrees Celsius, and the melting point of the fuse of the home line can not be too high or low.

Copper wire is usually drawn from hot-rolled copper rod without annealing (but smaller wire size may require intermediate annealing), which can be used for weaving mesh, cable, copper brush filter screen, etc., copper wire conductivity is very good, copper wire thermal conductivity is also very good, copper melting point.

Iron wire is a kind of metal wire made of iron drawing, iron wire according to different uses, the composition is not the same, it contains the following components: iron, cobalt, nickel, copper, carbon, zinc, and other elements, especially galvanized iron wire, using high-quality low carbon steel, after drawing molding, pickling rust removal, high temperature annealing, hot-dip galvanizing, cooling and other processes processed, the melting point of pure iron is 1535.

The function of the fuse, when the circuit is faulty or abnormal, accompanied by the continuous increase of the current, and the elevated current may damage some important or valuable devices in the circuit, and may also burn the circuit or even cause a fire. If the fuse is correctly placed in the circuit, the fuse will fuse itself to cut off the current when the current rises abnormally to a certain height and heat, so as to protect the safe operation of the circuit.

The fuse in the home circuit is broken, and copper or iron wire cannot be used to replace the fuse. The main function of the fuse is to protect the safety of the home line, so the melting point of the fuse should be low, through the above analysis, it can be seen that the melting point of copper wire and iron wire is higher, when the power consumption of the family line is large, the temperature is too high, the copper wire and the iron wire are not easy to blow, can not play the role of protecting the home line, so it is best not to use copper wire and iron wire in the home line, there are very large safety hazards. Article Reference**.

A: No, you can't; Because under the same conditions in other conditions, the resistance of copper wire or iron wire is smaller, the heat generated is less, and the melting point of copper or iron is higher, so it is not easy to fuse when the circuit has a fault of excessive current, and it cannot play the protective role of cutting off the circuit in time