Is it better to use a single core or a multi strand wire for home improvement

In fact, the current home improvement industry uses a single copper wire and a single core. Because considering the actual situation, a single strand is generally used, unless there is a certain requirement for the use of multi-strands in terms of design, because the ** of multi-strand is slightly higher than that of a single strand. It is more convenient to use a single strand of copper wire ** joint and equipment wiring.

The difference between a single core and a multi-strand: the single core is harder, and the construction and installation are not as convenient as the multi-strand, but the ** is slightly lower.

In fact, the key is to choose a reasonable cross-section, and the use of qualified wires is far more important than tangled single strands and multiple strands.

Which is better, single strand or multi-stranded wire? Don't finish the decoration and don't know how to choose the wire! Fitment; Huizhou decoration; renovation companies; Villa; villa decoration; Type; small apartment; interior design; decoration style; Decoration renderings; Toilet; Balcony; Living room; Bedchamber; Kitchen; New Chinese Style; Modern minimalism; Light luxury style.

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 a single-core cable.

When the core passes through the current, there will be magnetic field lines.

Cross-chained aluminum clad or metal shield so that it induces voltage at both ends.

2. Multi-core wires.

There are two or more conductors in the insulation layer of multi-core wires, with a voltage level of 35kV and below.

The cables are grounded at both ends, because most of these cables are three-core cables, and in normal operation, the sum of the currents flowing through the three cores is zero, and there is basically no magnetic link outside the aluminum clad or metal shield.

In this way, there is basically no induced voltage at both ends of the aluminum clad or metal shield, so there will be no induced current after the two ends are grounded.

Flows through an aluminum clad or metal shield.

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 multi-core wire with the same cross-sectional area, it is obvious that the surface area of the multi-core is multi-core.

The sum should be large, and heat should be generated when the current is passed.

The chances are smaller, so they are 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); 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. Household wires are better with a single core or multiple cores, and there is no fixed statement, which is decided according to the specific use, like our lighting wires, all of which can be used with single-strand copper core wires; 2. Air conditioners, instantaneous electric water heaters, and bath bombs above 2P (inclusive) must use 4 square double-strand copper core wires; Third, the rest of the lines are made of 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.

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Precautions. 1. The choice of wires varies according to different markets, and the awareness of wires in each place is different;

2.Home decoration generally uses a single strand, for example, the line used, the single-strand wire is, and the cross-section composed of multi-strand wires; The thinner the diameter of the wire, the greater the resistance, so if you choose a single strand with the same diameter, the resistance will be smaller and more stable;

3.Home decoration is mostly monoplastic, and most of the wires for home decoration are covered with 6-point PVC pipes, so it is enough to use monoplastic; Although the double plastic is good, it has an extra layer of protection, but it is expensive and increases unnecessary costs.

Considering the multi-core wire comprehensively, because the current transformer is installed in the cabinet, and the ammeter is installed on the cabinet door and instrument door, so this wire must pass through the door. According to the relevant national standards, the wire of the door shall not be single-core wire (because it is easy to cause the wire to break if the door is opened and closed frequently).

Home decoration is generally a good point for a single strand of buried wire, a multi-strand of threading is easy to wear, a single strand is hard for wearing elbows and small pipes, and a multi-strand is soft but easy to heat aging. Single-strand insulation is not as fragile as multi-strand insulation.

Single-core wires are generally used in cabinets. The advantage of single-core wire is that it is easy to form, and it can be easily achieved horizontally and vertically, while multi-core wire is not so beautiful. The disadvantage of single-core wire is that it is inconvenient to crimp, and it is easy to fall off if you are not careful.

An old electrician who sells clothes will explain the choice of home decoration wires for you.

The stability of a single core, the flexibility of a multi-core, the ease of operation, and the different uses.

1. Ordinary families generally use 4 6 square millimeters of high-quality wires as the power cord for the home, and the sockets are generally used with square millimeter wires, and the power sockets of air conditioners with more than 3 horsepower use 4 square millimeters of wires, and the power supply of storage electric water heaters is enough with square millimeters, while instantaneous electric water heaters need 6 square millimeters or even larger wires. Millimeter wires for general lighting.

2. There are many wiring schemes, enter the total control box of the home power supply, and first connect the total leakage switch (select the multiple specifications of the estimated total electricity current value, such as 40 60 80A, etc.);

Generally, it is used in air conditioners and electric water heaters with an independent plurality of air switches, and other sockets are divided by the number of rooms, and the same is true for lighting circuits, and the appropriate air switches (10, 15, 20A) are selected according to the power and current of each electrical appliance.

Multi-core wires are better than single-core 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.

3. Household wires are better with a single core or multiple cores, and there is no fixed statement, all according to the specific use to decide, to our lighting wire, can be used single strand copper core wire; 2. Air conditioners, instantaneous electric water heaters, and bath bombs above 2P (inclusive) must use 4 square double-strand copper core wires; Third, the rest of the lines are made of ordinary double-strand copper core wires.

Extended Materials. 1. Induction cooker and air conditioner should be wired separately with square wires.

2. The current load is large when the cabinet machine with more than 3 horses in the living room is started, and a line of 6 square millimeters is generally laid separately.

3. The total current of the induction cooker 5A is 10A4 square 25-32A, so the entrance line is 4 flat, the socket is flat, and the air conditioner is 5 flat.

4. The lighting line generally adopts the wire specification: square wire.

5. For general household appliances (such as electrical appliances, washing machines and other household appliances), square wires are used for load lines.

Seriously! The wire can be bought to ** brand, the public says the public is good, the mother says the mother is good! If you don't know how to read it, if conditions permit, it's best to bring a friend who can watch it to buy it!

But it should be noted that the national standard is not much different from the non-standard 4 (wire diameter)! The national standard line is generally 100 meters, but in fact it is only about 97 meters, and very few can be 100% to 100 meters!

As for the price, this can't give you a very accurate standard, which can be determined according to the purchase price of each period!

And what you said about multi-strand copper core wire or single-core wire, which is better! Personally, this is how to understand: the single strand is harder, a line over, and the conductivity is better, but it is not easy to install when installing, and sometimes you accidentally fold more than two folds, and the middle of the broken line is dizzy!

When installing the switch socket, twist the wire too vigorously and the wire will break! The multi-strand wire is not afraid of folding, and the installation is relatively practical! Personally, I feel that more strands are easier to use!

Home improvement wires generally use single-core wires for three reasons. One is cheap, the other is that there is a hardness to string PVC pipes to save man-hours, and the third is that the switch board wire interface is a plug-in multi-core wire that is soft and cannot be inserted. But if the wire interface of your switch board is fixed by screws, safety is more important than cost, and there is a good electrician to help you do it, then the multi-core wire is better.

The current has a skin effect, so the multi-core wire carries more current, generates less heat, and is safer under the same specification. However, circuit erection and joint production need to be done carefully. It is said that the multi-core flexible wire is easy to heat up and burned, and it is the work of a third-rate pheasant electrician.

Observe the copper core of the wire, the gloss is good, the yellow is reddish is high-quality copper, and the yellow white and shiny is brass, low-quality copper. Hydropower engineering is a very important part of home renovation. The necessary factor for the quality assurance of hydropower projects is that the quality of materials must be passed.

Generally speaking, if the semi-package is repaired, the wires, waterproofing and other materials are purchased by the foreman or the decoration company, but as the owner, at least you must know how to judge the quality of the materials. In addition to wires, decoration and electricity-related need to purchase air switches, circuit breakers, strong current boxes, switch sockets, ceiling lights, etc. Under the same brand model, the soft wire is twice that of the hard wire....

Multi-strand lines are better for the following reasons:

1. Construction: multi-strand wires are easy to construct.

Because the single-strand wire is made of a thick copper wire, it is a bit hard compared to multiple strands, so it is relatively difficult to thread during the construction of threading; With multiple strands, it is much easier to thread.

2. In terms of heat dissipation: multi-strand wire heat dissipation has certain advantages.

The multi-strand wire is composed of a plurality of thin copper wires, and there is a certain gap between the copper wires and the copper wires, so it has a certain advantage in heat dissipation.

In fact, the single and double strands of this wire, you can see a little difference from the name, the single strand wire is harder than the multi-strand wire, composed of a thick wire, and the double strand is composed of a plurality of thin copper wires, the former hard wire (BV) and the latter soft wire (BVR).

Extended Materials. The type of wire.

The two most important types of wires in home improvement wires are BV and BVR wires, and the current use of BV wires in home improvement is more than BVR wires.

Hardness and softness, BV line.

The hardness is greater than that of the BVR line.

The inner core is 99 99 oxygen-free copper.

BV: Commonly known as hard wire. It is mainly used for power supply, lighting, sockets, air conditioners, cables and wires for power devices with AC voltage of 450 750V and below, daily electrical appliances, instruments and telecommunication equipment.

Advantages: long service life, due to the outer circle area.

The cross-sectional area ratio is small, not easy to oxidize, and resistant to short-circuit current impact. Generally, it is mostly used in shielding engineering; In some demanding places, such as current transformers.

For the second lead-out line, the specification clearly indicates that the use of BVR line is prohibited.

Disadvantages: the wire is hard, it is difficult to straighten after bending, it is easy to be injured when bending repeatedly and straightening, and it is laborious to set the small tube. It is mostly used in fixed and buried environments.

BVR: commonly known as flexible wire, suitable for cables and wires used in power devices, daily electrical appliances, instruments and telecommunication equipment with AC voltage of 450 750V and below, such as distribution boxes.

Advantages: Because the line is soft, it is mostly used in active power places and temporary power consumption.

The place is easy to install, drag and drop, and move.

Disadvantages: short service life, due to the large ratio of the cross-sectional area of the outer circle, the oxidation rate is fast, if the impact of short-circuit current, after high temperature, the surface is seriously oxidized, the effective cross-section is greatly reduced, and it is easy to break the core and local heating.

and other problems, starting from the safe use of electricity, should be replaced in time.

Difference Between Single and Multi-Strand Lines:

1) Service life: The service life of a single strand is longer, the single strand is a wire composed of a thick copper wire, the hardness will be greater, it will have better and stronger tensile resistance, the performance of the wire will be better, the corrosion resistance will be stronger, and the resistance will be smaller, and the service life will be longer.

A multi-strand wire is a wire that is made up of multiple thin wires and is relatively soft.

The copper wire of the multi-strand wire is relatively thin, the area in contact with the air will be wider, the resistance is greater, and the problem of oxidation and corrosion is more likely to occur in the process of use, and the longer the wire is used, the copper wire will slowly age, and even a short circuit will occur.

2)**: Multi-strand lines are a bit more expensive.

The production process of the number of cavities in a multi-strand wire is more complex than that of a single-strand wire, so it is high.

With the same cross-sectional area, a multi-strand is more expensive than a single-strand**.

3) Difficulty of stringing: It is easier to thread multiple strands.

The stiffness of the multi-strand thread is low, so there is no need to work hard when pulling and bending, so the stringing process will be easier.

Because the single-strand wire is relatively hard, it is not easy to bend, so it needs to be more laborious when threading, and it will be more troublesome to replace the wire in the later stage.

4) Wiring difficulty: It is easier to wiring a single strand wire.

During the construction of the circuit, in order to ensure that the wire provides the role of power transmission, in addition to the wire, it is also necessary to carry out the wiring of switches and sockets, and in the process of wiring, there is a certain difference between single strand and multi-strand wire.

A single strand wire has only one wire, so it will be a little simpler when wiring.

There are more copper wires of multi-strand wires, and these thin wires must be twisted into a strand when wiring, so that they can be wired, and there will be some leakage at the same time, if there is leakage, then there will be a short-circuit leakage problem in the process of use.

The wire must choose a well-known brand, because the brand wire has a complete process system from raw materials to production, installation, use, and after-sales to ensure our safety.

I chose a local brand for home decoration - Mingda cable's wire, which has been used for more than 20 years without any problems, and the quality is very good.

Now I still choose Mingda's wire for the decoration of the new house, because now there is a circuit diagram from the "Mingda Electrician Car Bureau" is very detailed, which ensures safety and provides convenience for later transformation and maintenance. We are a brand in Hebei that I trust very much.