Wire is an indispensable item in home decoration, and the quality of the wire is directly related to the safety of the entire room and even the entire floor building. In other words, it is closely related to our daily life. So when you buy, you must make more comparisons and then choose. So, what is the wire diameter specification ? How to buy household wires? Let's answer it for you.
1. What is the wire diameter specification?
In fact, the wire is a wire used to transmit electrical energy, mainly used for outdoor overhead and indoor bus and switch box. At present, the wire diameter specifications on the market are: BVV, BVR, BVVB, RVHE RVV, and the two types of BVV2.5 and BVV2 * 1.5 are best used for home. Because BVV is the national standard code, they represent 2 cores 2.5 square mm and 2 cores 1.5 square mm, respectively. Under normal circumstances, BVV2 * 2.5 is used as the main line and trunk line, and BVV2 * 1.5 is used as a single electrical branch line and switch line.
In addition, for fire protection, maintenance and safety, it is best to choose the "national standard" copper core wire with the Great Wall logo for home improvement wire specifications. Note that the air conditioning wire should not be less than 2.5 square millimeters, and the negative line (zero line / ground line) at home is best to use green and yellow two-color lines, and the switch line is red, white, black, purple, etc. However, the color and purpose of the thread we use in the same home improvement project must be consistent.
2. The main points of purchasing household wires
There are cheap and expensive wires sold on the market. But there are often many consumers who will consider cheaper first, but many of the cheap wires often fail to reach the standard performance. How to choose it, the main points of purchase are as follows:
First of all, it is necessary to see whether the package of wire in the coil bears the "Great Wall Logo" and the production license number of the China Electrotechnical Product Certification Committee.
Secondly, see if the outer plastic skin of the wire is bright in color and fine in texture. We can use the lighter to ignite the seller's samples. If there is no open flame in the product, it is optional. Generally, non-regular products use recycled plastics, which have a dull color, a loose texture, and can ignite an open flame. This is undesirable.
Then, look at its length. The length of each roll of the regular product is 100 (+ -5) meters, and the length of the irregular product is 60-80 meters. Some manufacturers thicken the E-insulated skin, even if they are experts, it is difficult to see the problem. Therefore, in this case, we can count the number of turns of the wire and then multiply it by the radius of the entire coil to roughly calculate the overall length.
Finally, look at its inner core. The material of the inner core (copper) The higher the brightness, the better the copper quality, and the brightness is uniform, shiny, and without layering; non-standard ones may have hidden dangers of accidents, and it is not recommended to buy.
Editor's conclusion: The above is an introduction to the wire diameter specifications and how to buy home improvement wires. I hope it will help you in your choice. In fact, hydropower is a very important part of home improvement, so we must be careless in every detail, otherwise it will bring security risks to ourselves or our families.
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