Zhongtian Optical Cable Let me tell everyone what kind of electrical wiring should be used for home renovation.

　　As an indispensable item in daily life, electrical wires bring convenience while also posing numerous safety risks. Weak public awareness of safe electricity use and the widespread availability of substandard wires—rife with safety hazards—have led to a rise in wire-related fire incidents. Today, Zhongtian Optical Cable will introduce the key features of safe wiring.

　　The wire insulation is of good quality.

　　Insulation serves its insulating function and is also a crucial safeguard against damage to the copper conductors of electrical wires. How can you determine the quality of wire insulation? One method is to cut off a short section of the insulation sleeve and stretch it: if the sleeve turns white or tears, it is substandard; if it withstands repeated stretching without any issues, it is safe and reliable. Another test is to apply flame: counterfeit wires will ignite quickly, producing open flames and thick smoke, whereas high-quality wires burn slowly with little to no smoke or visible flame.

　　The weight and length of the electrical wire shall comply with the relevant standards.

　　Generally speaking, a 100-meter bundle of 2.5-square-millimeter wire should weigh 3 kilograms according to standards, with any deviation not exceeding 0.2 kilograms. If the purchased wire exhibits excessive deviation, it may indicate material substitution or poor copper-quality issues; such wire must be returned. As for length, there are no specific national regulations, but the standard length is typically 100 meters.

　　Copper wire is of better quality.

　　When selecting electrical wires, examine the color of the copper conductor: high-quality copper cores are purplish in color, soft, and glossy. By contrast, if the copper core appears black or yellowish, it indicates the presence of impurities, suggesting poor quality and making the wire unsuitable for purchase—such wires may even be made from recycled materials.

　　This wire has good flame-retardant properties.

　　Conventional PVC electrical wires are prone to aging, contain halogens, and are highly flammable. Moreover, when they burn, they produce large amounts of smoke and toxic gases that can harm human health. Therefore, to enhance the safety of home electrical systems, Zhongtian Optical Cable recommends using low-smoke, halogen-free, flame-retardant cables, which offer excellent fire resistance, are free of toxic substances, and provide a safe choice for residential wiring.

　　What cable protection measures does Zhongtian Optical Cable discuss?

　　Using cable protection conduits to protect cables offers the following advantages:

　　1. Flame-retardant and highly heat-resistant: it can withstand prolonged exposure to high temperatures of 130°C without deformation and does not ignite upon contact with fire.

　　2. High strength and rigidity: the cable system is directly buried beneath the roadway, eliminating the need for a concrete protective layer and thereby accelerating construction progress.

　　3. Cable protection conduits, whether in the form of pipes or fittings, possess sufficient flexibility to withstand damage caused by external pressure and foundation settlement.

　　4. It exhibits excellent anti-interference performance.

　　5. Excellent corrosion resistance and long service life; suitable for use in humid, saline-alkali soils.

　　6. The inner wall is smooth to prevent damage to cables; the spigot-and-socket connection is designed for easy installation and assembly, and a rubber sealing ring is added at the joint to accommodate thermal expansion and contraction and to prevent the ingress of mud and sand.

　　In summary, to prevent cable failures and minimize cable-related accidents, in addition to implementing necessary safety measures and conducting regular inspections, Zhongtian Optical Cable recommends selecting high-quality cables when making purchases.