What is the BV line?
In recent years, with the popularization of electronic equipment and technological advancement, BV wire, as a common wire type, has gradually become the focus of attention. So, what exactly is the BV line? What are its features and uses? This article will give you detailed answers.
1. Definition of BV line

BV line, full nameCopper core PVC insulated wire, is a common household wire. Its name comes from its structure and materials:
BV lines are mainly composed of copper conductors and PVC insulation layers and are widely used in power transmission in homes, offices and other places.
2. Characteristics of BV line
| Features | Description |
|---|---|
| conductor material | High purity copper with excellent electrical conductivity |
| insulation material | Polyvinyl chloride (PVC), corrosion-resistant and aging-resistant |
| working temperature | -15℃~70℃ |
| Rated voltage | 450/750V |
| Laying method | Apply it openly or covertly, do not bury it directly |
3. Specifications and models of BV lines
BV wires come in a variety of specifications. Common specifications are as shown in the table below:
| Specifications (mm²) | Conductor diameter (mm) | Outer diameter (mm) | Carrying capacity (A) |
|---|---|---|---|
| 1.5 | 1.38 | 2.8 | 18 |
| 2.5 | 1.78 | 3.2 | 25 |
| 4 | 2.25 | 3.6 | 32 |
| 6 | 2.76 | 4.5 | 42 |
4. Purpose of BV line
BV wire is widely used in the following fields due to its good electrical and mechanical properties:
5. The difference between BV wire and other wires
In addition to BV wires, common wires on the market also include BVR wires, RV wires, etc. Their differences are as follows:
| Model | conductor structure | softness | Main purpose |
|---|---|---|---|
| BV | single strand hard copper wire | Harder | fixed wiring |
| BVR | Stranded soft copper wire | softer | Where bending is required |
| RV | Thinner stranded copper wire | very soft | Mobile electrical cable |
6. How to choose BV line
You need to pay attention to the following points when purchasing BV lines:
7. Precautions for installing BV line
When installing BV lines, you need to pay attention to the following matters:
8. Market conditions of BV line
According to recent market research, the price trend of BV line is as follows (for reference only):
| Specifications (mm²) | Unit price (yuan/meter) | Main brands |
|---|---|---|
| 1.5 | 1.5-2.5 | Chint, Delixi, Panda |
| 2.5 | 2.5-3.5 | Chint, Delixi, Panda |
| 4 | 4.0-5.5 | Chint, Delixi, Panda |
9. The future development trend of BV line
With the popularity of smart homes and green buildings, BV lines are also constantly developing:
In short, BV lines, as the basic power transmission medium, will still play an important role in the foreseeable future. Understanding the characteristics and correct use of BV wires is of great significance to ensuring the safety of electricity and improving the quality of life.
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