Is the service life of pure copper wire 20 years, is it possible that the conductivity of copper wir

No. If it is not damaged by corrosion, it can still conduct electricity normally.

However, in the 20 years of application of many wires, some of them may be damaged or do not conduct electricity properly.

No, just 20 years copper will oxidize, resulting in poor contact will have adverse reactions, 20 years is to detect and replace new pure copper wires, the conductive function is unchanged.

There is a reason for this, generally after 20 years of use, the conductivity of copper wire will deteriorate a lot, but it can also be used normally.

The service life of the wire is 20 years, whether the copper wire is conductive, it will deteriorate, this is certain, and the products have a certain life.

Yes. With the passage of time, the outer packaging of copper wire will gradually age, and copper wire will also have different degrees of oxidation, which will affect the stability and conductivity of copper.

It is not that it will deteriorate after 20 years, and the life of copper wire will be shortened due to various reasons, such as external factors, frustration, temperature and other reasons.

Your understanding is very correct.

Because the service life of pure copper wire is 20 years, if you exceed 20 years, then this performance is definitely not so good.

Therefore, when it comes to the service life, we must know how to replace it in time.

The normal use of indoor wires is generally left unattended within 20 years. If you use regular wires, the environment is good, and you can use high-power appliances that exceed the load range for 50-60 years or even longer. The length of the service life of the wire depends on the quality of the wire and the environment in which the wire is installed and the environment in which it is used.

It shouldn't get worse, but there will be potential safety hazards and fires, so it should be replaced after 20 years of use.

Hello, generally speaking, the service life of pure copper wire is 20 years, which means that the safety or conductivity of this copper wire will deteriorate after 20 years.

Hello, generally speaking, if the service life is 20 years, it means that the quality of the copper wire is guaranteed within these 20 years, and after 20 years. There is no guarantee of quality, including the copper wire itself and the outer skin.

Under normal circumstances, after 20 years of copper wire, the copper will oxidize the special joints, so the effect is poor. Therefore, it is recommended to replace it after 20 years.

Since it is pure copper, even if it is conductive, its physical properties will not change much, and its conductivity will not change much, but there must be a certain oxidation effect on the surface, and then his insulating rubber may age, if it ages, there will be a zero-line live wire in the future, and a fire will occur.

The conductivity will not deteriorate, and after a long period of use, the insulation layer will age, and the joint will grow patina, and excessive current will also be dangerous.

Hello, the life of pure copper wires is not that the conductivity will deteriorate after 20 years, he just said that after 20 years of use, the insulator of the outer bread will be relatively old and prone to danger.

Generally, the service life of household wires is about 20 years. However, the degree of wire aging is not absolute, in addition to the quality of the wire itself, it is also closely related to the thickness of the wire, the installation quality and the use environment. Normally, the strength of copper core wire is higher than that of aluminum core wire, which is not easy to break, and the service life is relatively higher; and PVC pipes and wires.

The main thing is that the insulating skin on the outside of the copper wire, after repeated cold and hot changes, finally ages and hardens, cracks, and even falls off, which cannot ensure the insulation performance, and there will be dangers such as leakage and even short circuit.

Home improvement wires are generally BV or multi-copper core flexible wires. The service life of the general PVC wire is 20 years, and the PVC material begins to age after 20 years. After aging, if the walls of the home are damp, it is difficult to say that it will be electrocuted.

The combustion of ordinary PVC materials will produce toxic gases, such as halogen elements, and the fire will be played quickly. To be on the safe side, it's best to change the wire every 20 years.

Well, the service life of the wire is 20 years, is it that the conductivity of the copper wire will become worse after 20 years? If the service life of the prodigy shop is 20 years, after 20 years, the conductivity of the copper wire will deteriorate.

It doesn't have to look at how well it is maintained, and the quality may deteriorate within 20 years, after all, the shelf life will generally have an approximation.

It will not change if it does not conduct electricity at high loads for a long time. The main reason is the aging of the outer insulation. Thank you.

It is that the conductivity will deteriorate, but that the circuit may deteriorate.

This is because the wire needs to be replaced due to the aging of the insulating material, not because of the problem of copper, which has an oxide protective film on the surface of the copper, which can well protect the essence of the copper inside.

It can be used, decades of thread, a single thread through a wire pipe, the pipe is covered with adhesive tape, the large line still has use value, the small line is not necessary, the small line is cheap, the big line is expensive, you weigh the pros and cons, you can't use it near the water source.

General insulation material decides. The general service life is 20 years, and the actual service life may be greater than 20 years.

Related explanationsA wire is a wire that transmits electrical energy. It is divided into bare wire, magnet wire and insulated wire. Bare wires have no insulation, including copper, aluminum flat wires, overhead stranded wires, and various profiles (such as profile wires, busbars, copper bars, aluminum bars, etc.).

It is mainly used for outdoor overhead and indoor busbars and switch boxes. Magnet wire is an insulated wire that generates a magnetic field when energized or induces an electric current in a magnetic field.

It is mainly used for motor and transformer coils and other related electromagnetic equipment. Its conductor is mainly copper wire, which should have a thin insulation layer and good electrical and mechanical properties, as well as heat, moisture, solvent resistance and other properties. Different properties can be obtained by using different insulating materials.

Strictly speaking, it should be a copper core. multi-strand vs. single-strand; Single strand is BV cable, and multiple strands are BVR cable.

The service life of the cable has nothing to do with the conductor, mainly to look at the insulation and sheath, so there is no difference in the service life of copper core and aluminum core cables.

Generally, the design service life of cables is 20 years, but the cables laid in direct burial, pipelines and cable trenches often exceed 30 years.

Have a great day!

Depending on the environment and location of use, it can be used for about 10 to 20 years!

20 years.

There are many reasons for the aging of wires, such as excessive power of household appliances and poor quality of wiring. Generally speaking, the wires have to be replaced after 20 years of use, especially in the old community, residents should pay special attention to checking and replacing the wires and lines in their daily life, and try to avoid using high-power electrical appliances.

Wire and cable is an indispensable material for users in the process of electricity use, and its quality is directly related to the electricity safety of thousands of households. Therefore, when purchasing or selecting, how to quickly and accurately check the quality of wires (compensation wires, compensation cables, shielding compensation wires, shielding compensation cables, computer shielding cables, K-type compensation wires, S-type compensation wires and other wires and cables) is a skill that consumers must master.

Hello: Under normal circumstances, the national standard line is no problem for 10 years.

Generally, the wires of commercial housing are in line with national standards, and if they are used correctly and laid correctly, the life of the wires can be as long as the house.

However, after the decoration, most of them have destroyed the original national standards and have not laid wires in accordance with the requirements, so they can only be used there. For example, the state has made it mandatory more than ten years ago that it is strictly forbidden to use square wires in residences, and some decorators have to use square wires, so that the life span is very short.

Remove the square wires that originally met the national standards and sell them for money.

Now the normal service life of household wires can reach more than 20 years.

For the first time, the new national standard stipulates that the service life of wires and cables shall not be less than 70 years.

Since 1992, a large number of commercial houses built in China began to wiring the way from the bright line to the dark line, when the domestic wire due to technology, technology, materials and other factors, the service life of the national standard product is only 25 years.

How often the electrical wiring in your home needs to be replaced is generally determined by the electricity consumption in your home. If the installed wires do not match the total equipment and electrical appliances in the home; Multiple short-circuit trips, resulting in line aging; The wires at home are open wires, and after a long time, the insulation layer of the wires will fall off and peel off, and the wires need to be replaced in time in these cases.

If the wire is installed to match the equipment and appliances at home, the ordinary wire needs to be replaced once every 20 years, if the new wire is upgraded by modern times, the time can be judged according to the durability of the product. My home is Jinbei irradiated European standard wire, when I bought it, I fancy its durability of 70 years, and the performance is also strong, so if you don't change the house and don't do secondary decoration, you basically don't need to replace it.

National standard wires and cables generally have no shelf life, but there will be a cable service life. And this period depends on the materials used, and generally does not exceed 20 years.

Extrude (wrap) the insulating layer outside the conductor, such as overhead insulated cables, or several cores stranded (corresponding to the phase wire, neutral wire and ground wire of the power system), such as overhead insulated cables with more than two cores, or add a sheath layer, such as plastic rubber sheathed wires and cables.

The main process technologies are drawing, stranding, insulation extrusion (wrapping), cable formation, armoring, sheath extrusion, etc., and the different process combinations of various products are different.

Wire composition:

The conductor conductor is the conductive part of the wire and cable, which is used to transmit electrical energy and is the main part of the wire and cable.

The insulation layer is an indispensable part of the wire and cable structure that electrically isolates the conductor from the earth and the conductors of different phases to ensure the transmission of electric energy.

Wires and cables with a shielding layer of 15kV and above generally have a conductor shield and an insulating shield.

The function of the protective layer is to protect the wire and cable from the invasion of external impurities and moisture, as well as to prevent external forces from directly damaging the power cable.

There is no shelf life, but there is a service life, the rubber outside the cable will always age, and when it ages to a certain extent, it is no longer insulated, and the cable can not be used, but this process may be a few years, more than ten years, or decades, depending on the quality of the cable.

The design life of the cable is 30 years, and the general manufacturer will give you a commitment of one year. If the cable does not pass through the current, it will not age so quickly. Of course, it's better to leave a place. Wait until you need it before laying it.

It's useless to wear too many wires! The key is to see how many appliances you bring in each circuit, how many watts you bring, as long as the wires you wear are not overloaded, there is no problem!

I haven't heard that your wire has a shelf life, and if its insulation has not deteriorated, it can be used.

National standard wires and cables generally do not have a warranty period, but there will be a service life of the cable. And this period will depend on the material used, and generally will not exceed 20 years.

Extrude (wrap) the insulation layer outside the conductor, such as overhead insulated cables, or twist several cores (corresponding to the phase, neutral and ground wires of the power system), such as overhead insulated cables with more than two cores, or add a sheath layer, such as plastic rubber sheathed wires and cables.

The main process technologies include wire drawing, stranding, insulation extrusion (wrapping), cable formation, armoring, sheath extrusion, etc., and there are certain differences in different process combinations of various products.

Composition of the wire.

Conductor: The conductor is the conductive part of the wire and cable, which is used to transmit electrical energy and is the main part of the wire and cable.

Insulation: The function of the insulation layer is to electrically isolate the conductor from the ground and the conductors of different phases to ensure the transmission of electrical energy. It is an indispensable component of wire and cable structure.

Shielding: Wires and cables of 15kV and above generally have conductor shielding and insulation shielding.

Protective layer: The function of the protective layer is to protect the wire and cable from the invasion of external impurities and moisture, and to prevent the power cable from being directly damaged by external forces.

Generally, the shelf life of the cable is 10 years, look at the sheath and the insulation whether there are cracks, shake the insulation resistance of each item can generally be used without breakdown, but it is best to ask someone to do a withstand voltage test. If you pass the withstand voltage test, you can use it by all means.

The state stipulates a 30-year warranty. However, the specific warranty period should be determined according to the type of wire and cable, the conditions of use, temperature and applicable method.

Generally, the maintenance period of the cable is about 15 years, but it must be ensured that it is in a normal use environment, such as the quota temperature is below 70 degrees, but you use it in a working environment above 70, of course, you may not be able to use it for a year. Therefore, the most important thing is to use it according to the instructions for use.

Wires and cables are recommended by Omegor.

In today's society, this thing has no shelf life, it is not bad to use, and it is not high-tech, that is, the conductor is wrapped with a layer of plastic, generally as long as the conductor is not oxidized, not overloaded, it will not be broken.

Under normal circumstances, if it is a sheath wire, or a pure copper lower wall wire should still be used, if it is other wires such as old house aluminum wire or copper-clad aluminum is enough.

There are many reasons why the light does not turn on, and when it is determined that the bulb is in good condition, the reason for the defective light switch and terminal part is very large.