Wires and cables are a tool for transmitting electrical energy. Generally, a layer of insulation is wrapped around the wires and cables to ensure safety during use. There are many brands of wires and cables, and there are many varieties and specifications. So how should you choose wires and cables? Below, the editor will share with you a must-read guide for buying wires and cables, and tell you how to choose wires for home decoration.

Must-see guide for purchasing wires and cables 1: Length

Wires and cables often cut corners on length, so some people will say that the length of wires and cables sold on the market will be marked. , but some unscrupulous merchants mark the middle part by 10 meters more. Take 40 meters of wires and cables as an example. Although the length is marked as 40 meters, the actual length may be only 30 meters.

Must-see guide 2 when purchasing wires and cables: Wire diameter

Wire diameter is also a common way to cut corners in the production process of wires and cables. Take the 2.5 square BV wire as an example. In fact, This is what people often call a copper single, so why is it called 2.5 square meters? It is because the cross-sectional area of ??the copper wire of this BV line is 2.5 square meters, so the diameter of the 2.5 square BV wire should be 1.78mm.

Must-see guide 3 when purchasing wires and cables: Copper quality

Real copper is reddish in appearance, while brass is yellow in color, and copper material It is very soft, while brass is relatively hard. Judging from the current market situation, the cost of brass is relatively small. Just don't buy copper-clad aluminum wires and cables.

Must-see guide 4 when purchasing wires and cables: CCC certification mark

When purchasing wires and cables, you should pay attention to whether the wires and cables are marked with the CCC certification mark. According to the relevant national regulations Regulations stipulate that all wire manufacturing companies must obtain the CCC certification mark certified by relevant departments and mark the CCC certification mark on wire and cable products. In order to ensure the safety of household electricity, everyone must choose wires and cables with the CCC certification mark.

Must-see guide 5 when purchasing wires and cables: Product Certificate

Wires and cables produced by regular manufacturers will clearly print the length, rated voltage, factory address, factory name and other information of the product. , and the printed information is consistent with the product. This kind of wire and cable is a regular product and has a relatively high safety factor. Everyone must read it clearly when purchasing.