What is the difference between wire BV and BVR? Is it okay to use only one of them to install the li

The difference between BV and BVR wires: wires, BV PVC insulated single plastic wires;

BVR wire, PVC insulated multi-core flexible wire. The same area is subjected to different currents. There can be only one of them, and only one kind of single-core hard wire is generally used for home decoration.

The letter B stands for cloth wire, voltage: 300 500V; The letter V stands for PVC polyvinyl chloride, which is the plastic insulation;

The letter r stands for soft, and to be soft, it is to increase the number of conductors and reduce the diameter of each wire. Structure: The conductor is copper wire.

BV single-core, copper-core PVC insulated wire, fixed wiring; BVR multi-core, copper core PVC insulated flexible wire, fixed and wiring when requiring soft occasions.

BV wire is referred to as plastic copper wire, and the name is, single-core hard conductor unsheathed power cable for general purpose. It is more suitable for home use.

BVR PVC insulated multi-strand copper core flexible wire, because the wire is soft, is mostly used in active electricity places, and temporary power places, easy to install, drag and drop and move. However, the service life is short, because the ratio of the total outer garden area to the total cross-sectional area is very large, and the oxidation rate is fast.

I would like to add that if your line is used in the project, it is recommended to choose BV hard copper core wire, if your line is installed on the equipment, especially when there is a vibration place, it is recommended to choose BVR soft copper core wire, it is recommended to use special terminal blocks or tinning.

Wire BV is better.

Because the BV wire is more convenient when connecting, if you choose the BVR wire, not only the construction is slower, but the service life is not as long as BV, so you can directly choose the BV wire, which is more suitable for family use, and its current carrying capacity and power can meet the needs of electricity.

Whether the BV wire is threaded or used as a wire joint, the hard wire is definitely better to operate. Moreover, when making joints or wiring on the binding posts, the soft wires are often burred and not combed well, resulting in short circuits or leakage.

Uses of BV line and BVR line

BV lines are often used in fixed places such as deep burial, such as decoration, construction, and the main circuit of the distribution cabinet. BVR lines are often used for communication or in places where frequent movement is required (e.g. secondary circuits in distribution boxes). It should be noted that the anti-skin effect in the transmission grid uses multi-strand lines, not BVR lines; The communications sector is.

Therefore, in home decoration, the BV line is still the mainstream. Sometimes in some places where wiring is inconvenient, such as in the ceiling, the BVR line will also be seen. However, it is not very common to use the BVR line as the main line for decoration.

Surface-mounted wires are multi-core sheathed wires, also known as BVV wires, and BVR wires are two concepts. The hard wire and soft wire we talk about in decoration refer to BV wire and BVR wire - although BVV wire is also a multi-strand flexible wire, but the insulation method is different, so BVV wire is suitable for surface installation.

BV is a single-core hard wire, BVR is a multi-core flexible wire, and they are made of the same material.

The difference is:

The BV is hard enough, coarse enough, slightly cheaper, and safer, but the construction is troublesome.

BVR is soft, easy to construct, and easy to wiring.

Therefore, it is okay to choose BV or BVR, and the most important thing is to standardize construction.

The renovation of water and electricity in the decoration is a hidden project, and the wires laid in the dark cannot be replaced at will, so the choice of wires is directly related to the safety of electricity in the future.

Difference Between BV and BVR Line:

The material is the same, they are all copper core PVC insulated wires, the difference is: BV wire is a harder single-core hard wire, BVR is a softer multi-core flexible wire, and the same area bears the same current.

Detailed role differences:

Advantages of BV: Because the wire is hard, the service life is long, and it is not easy to oxidize, so it is generally used in concealed projects. Disadvantages: It is difficult to straighten the wire after bending, and it is easy to be injured if it is repeatedly bent and straightened.

BVR (also called secondary line): advantages: the line is soft, mostly used in temporary power places, the requirements for the laying angle are greatly reduced, and it is suitable for turning and threading pipes. Disadvantages: short service life, fast oxidation rate, easy to break the core, local heating, etc., need to be replaced in time.

Considering that the laying of dark wires in the circuit is a concealed project, the BV line with a longer service life is generally preferred.

The difference between BV and BVR wires:

1. The difference in hardness, BV wire is usually a single-core copper wire, which will be harder, and BVRD wire is a multi-core copper wire, which is softer.

2. The difference in electricity consumption, the BV line is a single-core wire, which is suitable for use at a voltage of about 450-750 volts, and the voltage of the BVR line can reach about 500 volts.

3. The difference in capacity, in the case of the same cross-sectional area of the two lines, the load of the BVR line is much higher than that of the BV line, and the power it bears is greater.

Advantages and disadvantages of BV line:

Advantages: The hardness is relatively high, suitable for use in some relatively concealed engineering construction circuit environments, the service life is relatively long, and it is not easy to be oxidized and aged.

Disadvantages: If the wire is bent and folded, it is difficult to restore the original state, and the wire after bending is easy to wear, so the circuit is prone to failure.

Advantages and disadvantages of BVR wires:

Advantages: This kind of wire is very soft, especially suitable for wiring to bend engineering, not easy to break, and the operation is very simple.

Disadvantages: Because the wire is relatively soft, the service life will definitely be much lower, and it is very easy to oxidize if the environment is relatively humid.