type

The BV line is divided into ZR-BV and NH-BV.

ZR-BV:  Copper core polyvinyl chloride insulated flame-retardant wire: The insulation material is added with flame retardant, which does not ignite when away from an open flame. Flame retardant BV wire is divided into A B、C、 There are three levels, among which A is the best, and so on, with ZR-BV being the most commonly used.

NH-BV： Copper core PVC insulated fire-resistant wire: can still be used normally under normal fire conditions.

other:

BV flexible wire is represented by BVR, BV rubber copper wire is represented by BX, BV rubber aluminum is represented by BLX, BV plastic aluminum is represented by BLV, fire-resistant BV wire is represented by NH-BV, and flame-retardant BV wire is represented by ZR-BV

purpose

General purpose single core hard conductor unshielded wire, suitable for cables and wires used in power devices, daily appliances, instruments, and telecommunications equipment with AC voltage of 450/750V and below.

Common insulated wires and household wires are the most commonly used types of wires. Taking a 100 square meter new house as an example, there are 200 meters of copper core BV wire for 4 square meters, 400 meters for 2.5, 300 meters for 1.5, and 100 meters of copper core BV dual color wire for 1.5 square meters. The above is about non ceiling decoration. If you want a ceiling, you need a 1.5 wire and a little more. There are also several BV wire diameters in square meters: 0.2, 0.3, 0.4, 0.5, 300, and 400 square meters.

characteristic

Has characteristics such as acid and alkali resistance, oil resistance, moisture resistance, and mold resistance.

model

name

1. Classification and purpose are used for distributing current, belonging to the category of electrical wiring, represented by the letter "B";

2. The conductor material is copper, represented by the letter "T", and the copper core conductor is omitted;

3. The insulation material is polyvinyl chloride, represented by the letter "V";

4. The structure of the wiring is simple. In addition to the above three points, some also have a sheath, which is made of polyvinyl chloride and is represented by the letter "V"; If the sheath material is rubber, it is represented by the letter "X". If there is no protective cover or something behind it, there is no need to indicate it.

BVV stands for copper core PVC insulated PVC sheathed round wire.

Common models

BV lines are usually distinguished by the cross-sectional area of the metal conductor at the center of the insulation layer. (For example, if the cross-sectional diameter of a copper core with a 4 square BV wire is 2.25 millimeters, according to the formula S=π * r * r=3.976 square millimeters for calculating the circular area)

Common BV cable models: 0.75 square, 1 square, 1.5 square, 2.5 square, 4 square, 6 square, 10 square, 16 square, 25 square, 35 square, 50 square, 70 square, 95 square, 120 square, 150 square, 185 square, 240 square, etc

colour

The commonly used BV thread colors are: red, yellow, blue, green, black, white, two-color (yellow, green), brown.

Execution standards

Execution standards for BV plastic copper wire products

GB/T5023-2008

This standard is equivalent to IEC 60227-1997 and JB/T 8734-2016. This standard is equivalent to IEC 227-1979