People who have been renovated know that hydropower projects are a very important link, why do you say so? First of all, it is a basic project, if there is a problem with the hydropower project, it is directly related to the comfort and safety of future living. There is a metaphor that hydropower projects are like people’s hearts in home decoration, and if there is a problem with water and electricity, the whole family will be paralyzed. Hydropower projects are also known as “hidden projects”, and once you find that there are areas that need to be repaired in the “hidden projects”, then your trouble will come.
Then hydropower engineering involves a very important thing – material selection! Today, Brother Rabbit wants to focus on the selection of wires for the circuit part of the hydropower project, should you use hard wires or flexible wires?
For the wires that will inevitably be used in circuit engineering, it is divided into BV line (hard wire) and BVR line (soft wire), I believe that I am not a professional hydropower construction personnel, it is estimated that the difference between the two should be a blank face.
Then Brother Rabbit will give you a detailed introduction to the characteristics between the two and their respective use scenarios, only for your reference when doing circuit engineering.
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1. BV line
Chinese copper core PVC insulated cable is what we commonly call single-core single-stranded hard wire.
Its main features are cheap price, strong tensile resistance, strong corrosion resistance, weak fatigue resistance, and high waste recovery rate.
(1) Cheaper price:
Because the production process of BV line will be simpler than that of BVR cord, the price will be about 50 yuan lower per disc (100 meters) than the same brand of soft wire, which is why the use affects slightly more users than users who use such as soft wire.
(2) Strong tensile resistance:
Generally, hard wires are more resistant when there is a longitudinal pull – but then again, this is not useful for home renovation.
(3) Long service life:
Compared with BVR flexible wire, BV hard wire has stronger corrosion resistance and fatigue resistance, so it is less likely to be oxidized, so it will have a longer service life.
(4) Convenient construction:
Whether it’s threading or making wire connectors, hard wire is definitely better to operate. Moreover, when making joints or wiring in terminal posts, the soft wire often burrs are not combed well, resulting in short circuit or leakage.
Second, the use of BV line
Because of its characteristics, BV lines are often used in fixed places such as deep burial, such as decoration, construction and the main circuit of power distribution cabinets. Here to say that when using BV line for home decoration, it is best to go straight through the wall through the pipe, which is not suitable for turning through the pipe. It is used for power supply, lighting, sockets, air conditioners, and is suitable for cables and wires used in power units with AC voltage 450/750V and below, daily electrical appliances, instruments and telecommunication equipment.
Therefore, it is generally used for burying walls and burying ground, and is used as the main line.
3. BVR line
Also known as copper core PVC insulated flexible cable, which is also what we usually call flexible wire, it is composed of copper wire with multiple and uniform thickness, which can increase the number of conductors and reduce the diameter of a single conductor, and the diameter of a single conductor is less than 1 mm, so it is very soft.
Its main characteristics are high price, weak tensile force, weak corrosion resistance, strong fatigue resistance, and convenient maintenance.
(1) Convenient maintenance:
If you want to change the wire, it is definitely the soft cord that is more convenient. When changing the hard wire, it is almost impossible to pull without the help of wire springs, threading wires, etc. However, flexible wires can often easily pull old wires out of the threading tube and introduce new wires at the same time.
(2) Easy to lay:
Because the BVR wire is composed of many and small copper wires, which is softer than the BV wire, the flexible wire has obvious advantages in the ability to resist extrusion and bending. The angle requirements are greatly reduced during laying, and it is convenient to drag.
Fourth, the use of BVR line
BV cable because of its characteristics, generally used as a power connection cable for equipment. It is often used in AC voltage 450/750V and below power units, daily electrical appliances, instruments and telecommunications equipment for cables and wires, such as distribution boxes. The line is soft for installation in temporary power places, and it is convenient to tow.
So is it better to choose a hard wire or a soft line for home decoration? What Brother Rabbit wants to say is that everyone must first understand the characteristics and usage scenarios between these two, and then decide according to the actual situation of your home decoration, which is reasonable and correct according to the appropriate place.
However, generally in home decoration, BV lines are still used more. In some places where wiring is inconvenient, such as in suspended ceilings, BVR lines can also be seen. However, it is still not common to use the BVR line as the main line for decoration.
Relying on this trick, I saved 30,000 yuan in home decoration! Click “Learn More” below to get a free budget quote.
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(Mini programs have been added here, please go to Toutiao client to view)
(Mini programs have been added here, please go to Toutiao client to view)