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A proper supply of electricity is essential in daily life, and the quality of the wires used has a direct impact on the safety of our daily activities. How do we choose suitable wires for home use, and what are the specifications required for wires used in home installations? Jingbo Cloud Commerce will share with you 6 key tips for identifying wires. Tip 1: Check the hidden length carefully. The length of the wire is definitely one of the common tactics used to cut corners; when checking, never rely solely on the measurement at the end of the wire. Although the length is marked at the end of some wires, this length is not accurate; some unscrupulous sellers manipulate the measurement by altering it, for example marking 40 meters when the actual length is 30 meters. Tip 2: Be aware of thread diameter blur, which is also common in the market. For example, a BVV wire with a cross-sectional area of 2.5 square millimeters, commonly known as a single-copper wire, is a copper wire that consists of just one strand. It is called 2.5 square because the diameter of the copper wire is 1.78 mm. As for some BVV wires with a cross-sectional area of 2.5 square millimeters, the outer insulation is included in that measurement, resulting in a total length of 1.78 mm; in reality, the diameter of the copper wire is less than 1.78 mm. Tip 3: Check the quality of the copper material. Genuine red copper is red in color, while brass is yellow. Copper is very soft, while brass is hard. Tip 4: Look for the CCC mark – wires must have this certification mark; it is a **mandatory safety certification, and only products that pass the inspections are granted the CCC mark. The quality of electrical wires can affect our personal safety and property security; it is essential to choose wire products that come with a CCC certification mark. Tip 5: Product certification. The certification for wire products clearly prints information such as the CCC certification mark, trademark, model specifications, rated voltage, length, inspection results, manufacturing date, applicable standards, manufacturer’s name, address, and phone number, and this information must match the actual product. Only products manufactured by legitimate factories come with such certifications, so it is important to check these details carefully when making a purchase. When choosing wires, it is essential to opt for products manufactured by reputable manufacturers whose products meet all specified standards in terms of size and quality; such products are of satisfactory material quality and can be used with confidence. In contrast, non-reputable products use recycled plastic, which results in a dull color and a loose texture.