Which is better, single core copper wire or multi core copper wire for home improvement wires

1. Single-core wire.

The so-called single-core wire is actually a conductor in an insulating layer. If the voltage of the circuit often reaches more than 35kV, it is generally recommended to use a single-core wire, because its core and metal shield can be regarded as a small transformer, which is equivalent to the relationship between the coil and the core in a primary winding. When the core of a single-core cable passes through the current, there will be a magnetic field line cross-chained aluminum package or metal shield, so that the induced voltage appears at both ends of it.

2. Multi-core wires.

There are two or more conductors in the insulation layer of multi-core wires, and the cables of voltage level of 35kV and below are grounded at both ends, this is because most of these cables are three-core cables, in normal operation, the sum of the current flowing through the three cores is zero, and there is basically no magnetic link outside the aluminum ladle or metal shield, so that there is basically no induced voltage at both ends of the aluminum ladle or metal shield, so there will be no induced current flowing through the aluminum ladle or metal shield after the two ends are grounded.

Is it better to have a single or multiple core for household wires?

1. There is a characteristic when the current passes through the wire: that is, the current will always be concentrated on the surface of the conductor, which is the so-called "skin effect" of the current, so compared with the single-core wire and multi-core wire with the same cross-sectional area, it is obvious that the sum of the surface area of the multi-core is larger, and the chance of heating up when passing through the current is smaller, so it is safer! So multi-core wire is better than single-core wire!

What is more noteworthy is that there are many single-core wires, and the core wires are broken off.

2. The difference between single core and multi-core is mainly in its structure, because the multi-core is soft, it is not easy to break the core, it is suitable for the curve tension movement of the wire in the installation of the pipe, and the single strand is not easy to pull (unless it is a straight line); For the same specification of plastic insulated wire**, multi-strand wire is higher than single-strand wire, one is complex processing, and the other requires pure copper; Compared with multiple cores, it is more convenient in terms of road joints and equipment wiring.

3. There is no fixed statement that single-core or multi-core household wires are better, and they are determined according to the specific use, such as lighting wires, single-strand copper core wires that can be used; Air conditioners, instantaneous electric water heaters, and bath bombs above 2P (inclusive) must use 4 square double-strand copper core wires; The rest of the lines are ordinary double-strand copper core wires.

Home decoration is generally made of single plastic, because the wires of home decoration cloth must wear PVC pipes.

It depends on the occasion of use. 1. Choose single-core copper wire for home decoration dark laying. 2. Choose multi-core copper wire for open wire installation. The selection principle is: economical and convenient maintenance.

There is not much difference between the wire of a single-core conductor or the wire of a multi-strand soft conductor for home improvement wires.

Under the same nominal cross-section, the current carrying capacity of a single core is slightly greater than that of multiple strands (3 5%), and it is also slightly cheaper, but the hardness of a single core and the bending radius are greater than that of multiple strands. Multi-strand softness.

Wires with a single conductor or wires with multiple strands of soft conductors. The softness of multi-strands is not much different in actual use, and the current carrying capacity of a single core is slightly greater than that of multi-strands (3 5%)Under the same nominal cross-section, ** is also slightly cheaper, but the single core is harder, and the bending radius is greater than that of multiple strands.

Summary. Hello, multi-core copper wire is good.

1.The biggest difference between a single core and a multi-core is the softness of the wire.

2.Single-core copper wire has the characteristics of strong tensile strength, not easy to break, strong surge current resistance, and easy forming. Its disadvantages are:

Poor softness, poor breaking resistance, poor skin resistance, poor heat dissipation. Advantages of multi-core copper wire: good flexibility, good heat dissipation, good skin resistance, and good fracture resistance.

However, its shortcomings are: poor tensile strength, easy to break, poor inrush current, and not easy to form.

3.Both types of wires have their advantages and disadvantages, and we can choose different wires according to different uses. Many electricians use multi-core copper wire, because the material of multi-core copper wire is softer and simpler to use, and electricians in the process of threading, multi-core copper wire is much simpler than single-core copper wire.

Is it better to have a multi-core copper wire or a single-core copper wire?

Hello, multi-core copper wire is good. 1.The biggest difference between a single core and a multi-core is the softness of the wire.

2.Single-core copper wire has the characteristics of strong tensile strength, not easy to break, strong surge current resistance, and easy forming. Its disadvantages are:

Poor softness, poor breaking resistance, poor skin resistance, poor heat dissipation. Advantages of multi-core copper wire: good flexibility, good heat dissipation, good skin resistance, and good fracture resistance.

However, its shortcomings are: poor tensile strength, easy to break, poor inrush current, and not easy to form. 3.

Both types of wires have their advantages and disadvantages, and we can choose different wires according to different uses. Many electricians use multi-core copper wire, because the material of multi-core copper wire is softer and simpler to use, and electricians in the process of threading, multi-core copper wire is much simpler than single-core copper wire.

Which is better, multi-core wire or single-core wire.

Multi-core wire. Which is better, multi-core wire or single-core wire.

Multi-core wire is good.

Whether to use single-core copper wire or multi-core copper wire should be decided according to the specific conditions of the application, such as the place, environment, and use.

Let's analyze the advantages and disadvantages of each first:

1. The advantages of single-core copper wire are: strong tensile strength, not easy to mildew, strong surge current resistance, convenient shaping, etc. The disadvantages are: poor softness, poor breaking resistance, poor skin resistance, and poor heat dissipation.

2. The advantages of multi-core copper wire: good flexibility, good heat dissipation, good skin resistance, and good fracture resistance. The disadvantages are: poor tensile strength, easy mildew, poor inrush current, and inconvenient shaping.

By analyzing the advantages and disadvantages of each, it can be seen that the advantages of one side are basically the disadvantages of the other. Therefore, in electrical engineering, it is necessary to pay attention to the strengths and avoid the weaknesses. Make the design reasonable.

1. Single-core copper wire should be used in dark application, overhead, power box jumper finalization, etc.

2. Multi-core copper wires should be used for applications such as power cords for household appliances, circuit boards, and active workplaces.

Without the specific application environment, it is meaningless to discuss which kind of copper wire is better to use without focusing on the specific application object.

Summary. Hello dear! Glad for your question!

Which is better, copper core wire or cable: copper has greater electrical conductivity and better conductivity than aluminum wire, but aluminum wire is cheaper, and the density is smaller, and the amount of return is much smaller than copper wire. So, it is necessary to choose according to the need.

Among the four materials of gold, silver, copper and aluminum, under the same conditions, the conductivity is in order: silver, copper, gold and aluminum. Note that the same conditions referred to here refer to:

Same length, same cross-sectional area, same temperature. These conditions are not the same and are not comparable. These properties are also called the resistivity of the material.

Their English symbols are: 金:au; Silver:

ag；Copper: Cu; Aluminum: Al.

Gold and silver** are too expensive to be used as wires; Copper and aluminum are both good materials for making wires, but copper is not suitable for long-distance transmission lines, because of the high density and large mass (weight), it cannot be pulled over long distances; The density of aluminum is small and can stretch a long distance, but its conductivity is worse than that of copper, and it is not as good as copper. Each has its own strengths and weaknesses.

Hello pro-lack rock! Glad for your question! Which is better, copper core wire or cable wire:

The electrical conductivity of copper is greater, and the conductivity is better than that of aluminum wire, but aluminum wire is cheaper, and the density is smaller, and the amount of return is much smaller than that of copper wire. So, it is necessary to choose according to the need. Among the four materials of gold, silver, copper and aluminum, under the same strip of volt-annihilation parts, the conductivity is in order:

Silver, copper, gold, aluminum. Note that the same conditions referred to here are: the same length, the same cross-sectional area, the same temperature.

These conditions are not the same and are not comparable. These properties are also called the resistivity of the material. Their English symbols are:

Kim: au; Silver: ag; Copper:

cu；Aluminum: Al. Gold and silver** are too expensive to be used as wires; Copper and aluminum are both good materials for making wires, but copper is not suitable for long-distance transmission lines, because of the high density and large mass (weight), it cannot be pulled over long distances; The density of aluminum is small and can stretch a long distance, but its re-registered conductivity is worse than that of copper, and it is not as good as copper.

Each has its own strengths and weaknesses.

It should be said that each has its own benefits, mainly depending on what is used. If it is a dark laying, it is undoubtedly the best choice to use cables, and it is better to use indoor wiring or copper wires. In general, cables are better than copper wires, whether they are laid openly or buried, and this is true for stupid bridges.

However, from the perspective of the cost of the cable, the cost of the cable is too high, and the cost of the copper wire is stupid, and it is best to choose according to the use.

Is it better to use single-core copper core wire or multi-core wire for wires?

Hello dear!

We are glad to answer for you: multi-core wire is good, and multi-core wire (BVR) is also a flexible wire that is easy to thread. Easy to update.

Wire splices can also be connected tightly. It is also not easy to break the line. This should be determined according to the requirements you use, in short, the single-core copper wire has good mechanical strength, but its current carrying capacity is not good (referring to AC).

The mechanical strength of the multi-core copper wire is relatively worse than that of the single-core one, but its current carrying capacity is better. Because there is a skin effect in the AC circuit. Therefore, if the mechanical strength requirements are not very high, it is recommended that the wire of more than 10 square meters should be used with multi-brigade core wire.