Before Carrying Out Home Renovation, Order Wire Selection Considerations

When buyers use the wire, the first thing we see is the appearance of the wire and certification, the wire must be printed with 3C certification mark. Wire and cable products are national mandatory safety certification products. All manufacturers must obtain the certification of the China Electrical Products Certification Commission "3C" certification, and obtain the "3C" certification mark, followed by the "factory name" factory number. Models, specifications, meters, voltages, implementation standards and meters. Inspection and production date; the quality of the wire will affect the safety of our lives and property, so we must choose wire products with 3C certification mark.

Next, let's take a look at the wire body. The wire body must be printed with 3C, factory number, factory name, model number and voltage. Check whether the imprint on the thread matches the certificate of conformity. Such as 3C, factory name and other information. Not printed on the thread body, or is not consistent with the certificate, this wire is definitely not a qualified product.

Wire specifications

Wire specifications are very important, the general household power cord should be used BV BVR BW RVVB, which is the national standard specification.

BV wire is a single-core hard copper wire

If this wire is used to install, you need to match three colors, a red (fire wire), a blue (zero wire), a yellow-green bicolor wire (ground wire).

Advantages: the resistivity is relatively low, but also save electricity.

Disadvantages: the wire is too hard for construction. Electricians are generally not recommended to buy such a wire.

BVV wire is a two-core hard copper wire

This wire is protected by a sheath pvc sheath, which is two single-core hard copper wire, one is the fire wire, one is the zero wire. This wire is also relatively hard, relatively good than BV wire, because it is two layers of pvc insulation.

BVR wire is a multi-stranded single-core hard copper wire

Advantages: soft and easy to build. Electricians generally recommend buying this wire.

Disadvantages: this wire is higher than the resistivity of BV wire, power consumption.

RWV wire is a multi-stranded single-core soft copper wire: this wire also has two cores, the outside is PVC sheath, there are two inner cores, the fire wire and zero wire. Each wire is twisted one after the other into dozens of thin copper wires.

Advantages: soft lines, easy to build.

Well, after the introduction of the home model, let's talk about what type of wire should be selected for home use.

Home lighting generally uses 1.5 square wire: according to BV wire standards, conductor (copper wire) diameter between 1.35mm-1.38mm, the weight of 100m should not be less than 2.1KG. 2.5 square wire is generally used for a variety of outlets at home: according to BV wire standards. 2.5 square conductor (copper wire) diameter between 1.74mm-1.76mm. . the weight of 100 meters should be no less than 3.2 kg.

4 square wire is generally used for household, air conditioning, hot water gas, high-power appliances; 4 square wire and conductor (copper wire) diameter should be between 2.22 mm and 2.24 mm. 100 meters should weigh not less than 4.7 kg.

When buying wires, it is best to weigh them and see if they meet the standards. If the weight is not up to standard, it means that the meter is not less than 100 meters or the diameter of the conductor is not up to standard.

Wire appearance

The appearance of a good wire product should be smooth and round with uniform color. Therefore, when buying, you should disassemble the wire and check whether the appearance of the color is uniform. If there is discoloration, it proves that the quality of the wire is not up to par. You can also use a lighter to burn it to see the temperature resistance.

Conductor wire

The conductor of the wire should be bright, and the DC resistance and conductor structure size should meet the requirements of the national standards. Wire and cable products that meet the requirements of national standards are bright and pollution-free, whether they are aluminum or copper conductors. Therefore, the DC resistance of the conductor fully conforms to the national standards, good conductivity and high safety.

The choice of wire products is mainly focused on quality and safety. PentaCom brand has been used before, the quality is good. Has passed ISO9001 quality management system and other production standards certification, product quality is guaranteed, we recommend the use of.