PVC Insulated Electrical Wire 1.5-6mm² G/Y Earth Cable 450/750V for House Wiring (IEC 60227)

Cross-sectional specifications: The cross-sectional specifications of this PVC Insulated Electrical Wire range from 1.5mm² to 6mm², which is carefully designed according to the actual needs of house wiring. The 1.5mm² wire has a relatively small conductor diameter and can meet the grounding needs of small household appliances in terms of conductivity. For example, a desk lamp usually has a power of several tens of watts, and the current generated during its normal operation and possible leakage is small. The 1.5mm² wire is sufficient to safely conduct these currents to the ground. Although a microwave oven has a slightly higher power, as an intermittently working appliance, its grounding needs can also be met by the 1.5mm² wire. The 2.5mm² wire has a moderate conductor diameter and stronger conductivity, suitable for medium-power household appliances such as air conditioners and washing machines. When an air conditioner is cooling or heating, it has a relatively high power, and the leakage current that may be generated during operation is relatively large. The 2.5mm² wire can stably carry these currents to ensure grounding safety. When a washing machine is working, the motor may have slight leakage during operation, and this specification of wire can also timely conduct the leakage current away. The 4mm² and 6mm² wires have larger conductor diameters and excellent conductivity, suitable for residential main grounding lines or high-power appliances. The residential main grounding line needs to summarize the currents from various branch lines and has high requirements for conductivity. The 4mm² and 6mm² wires can easily meet this demand. An electric water heater usually has a power of several kilowatts. If leakage occurs during operation, a large current will be generated, and the 6mm² wire can quickly conduct it to the ground to avoid accidents. A central air conditioner, as a large household appliance, requires strong conductive support for the grounding of the entire system, and wires with a specification of 4mm² or above are suitable choices.

Rated voltage: The rated voltage of 450/750V is an important parameter of this wire. This design highly matches the voltage standard of the residential low-voltage distribution system. The common voltage in residences is 220V, and the rated voltage of 450/750V can withstand possible voltage fluctuations and transient overvoltages in the system, providing a stable voltage environment for the grounding system. When connecting with distribution devices, sockets, etc. in the household circuit, no additional voltage conversion equipment is needed, and it is directly compatible, which greatly simplifies the construction process of house wiring and reduces potential safety hazards caused by voltage mismatch.

Insulation thickness: Wires with different cross-sectional specifications have different thicknesses of PVC Insulation layers. The insulation layer thickness of the 1.5mm² wire is about 0.6mm, which can provide basic insulation protection for the grounding of small household appliances and prevent current leakage to other lines. The insulation layer thickness of the 2.5mm² wire is about 0.8mm to cope with the slightly higher voltage and current that may occur in medium-power household appliances and enhance the insulation effect. The insulation layer thicknesses of the 4mm² and 6mm² wires are about 1.0mm and 1.2mm respectively. A thicker insulation layer can provide more reliable protection for the main grounding line and the grounding of high-power appliances, resisting possible higher voltage impacts and physical damage, and ensuring long-term stable insulation performance.

Conductor resistance: At room temperature, the conductor resistance of the 1.5mm² wire is not more than 12.1Ω/km, that of the 2.5mm² wire is not more than 7.41Ω/km, that of the 4mm² wire is not more than 4.61Ω/km, and that of the 6mm² wire is not more than 3.08Ω/km. The low conductor resistance ensures that the current loss during transmission is small, which can quickly conduct leakage current or static electricity to the ground, improve grounding efficiency, reduce current retention caused by excessive resistance, and further ensure electrical safety.

Length specifications: The wire is available in various length specifications, commonly 50 meters, 100 meters, 200 meters, etc. The 50-meter length is suitable for partial grounding line transformation in small residences or separate grounding installation of small household appliances. The 100-meter and 200-meter lengths are suitable for the overall grounding line laying of new residences. Users can flexibly choose according to the area of the residence and wiring needs, avoiding the problem of too many joints due to insufficient length or material waste due to excessive length.

Grounding of small household appliances: For small household appliances such as desk lamps, microwave ovens, electric fans, and rice cookers, the 1.5mm² PVC insulated green-Yellow Earth Cable is an ideal choice. These appliances have low power, generate little current during normal operation, and even if leakage occurs, the leakage current is relatively small. This specification of wire can timely conduct these leakage currents to the ground to prevent electric shock accidents when the human body touches the appliances. For example, if the metal base of a desk lamp is charged due to internal line aging, the earth cable can quickly conduct the current away to ensure the safety of the user. If a microwave oven has slight leakage during use, the earth cable can respond quickly to avoid the leakage current from harming the human body.

Grounding of medium-power household appliances: Medium-power household appliances such as air conditioners, washing machines, refrigerators, and televisions are suitable for grounding with the 2.5mm² wire. During the operation of an air conditioner, components such as the compressor may generate a certain amount of leakage current, especially in humid environments, the risk of leakage increases. The 2.5mm² wire can stably carry these currents to ensure the safe operation of the air conditioner. During the washing process of a washing machine, the motor comes into contact with water, so there is a potential leakage hazard. The earth cable can timely conduct the leakage current away to protect the user. The compressor of a refrigerator and the internal circuit of a television may also have leakage, and this specification of wire can provide reliable grounding protection for them.

Grounding of high-power appliances: High-power appliances such as electric water heaters, central air conditioners, and electric ovens require the 4mm² or 6mm² wire for grounding. An electric water heater is an appliance that is in direct contact with water. Once leakage occurs, the consequences can be disastrous. The 6mm² wire can quickly conduct large currents to the ground, and together with the residual current device, can cut off the power supply in a very short time. A central air conditioning system is complex and has high power, and its grounding line requires strong conductivity. Wires with a specification of 4mm² or above can meet this demand to ensure the electrical safety of the entire system. An electric oven has a high power during operation and generates a lot of heat, which may affect the insulation performance of the line. A thicker wire and a thicker insulation layer can cope with this situation to ensure reliable grounding.

Residential main grounding line: The residential main grounding line is the core of the entire household grounding system, which needs to connect the grounding lines of various rooms and appliances to form a unified grounding network. The 4mm² or 6mm² wire is a suitable choice. The main grounding line carries the maximum possible leakage current of the entire residence, and its performance is directly related to the overall safety of household electricity use. This wire can stably summarize and conduct these currents, conduct them to the grounding electrode, ensure the integrity and reliability of the grounding system, and lay the foundation for the electrical safety of the entire residence.

Lightning protection grounding branch line: In the lightning protection grounding system of a residence, this wire can be used as a branch line to conduct the current generated by lightning induction to the grounding electrode. When lightning occurs, the appliances and lines in the residence may induce a certain amount of current. If not conducted away in time, it may damage the appliances. The Green-Yellow Earth Cable can safely conduct these induced currents to the ground, reduce the damage of lightning to household appliances, and provide additional protection for the lightning protection safety of the residence.

Conductor Material: The conductor of the wire is made of high-purity copper with a purity of more than 99.9%. High-purity copper has excellent conductivity, with high electrical conductivity, which can quickly conduct current, ensuring that leakage current or static electricity is conducted to the ground in the shortest time. Compared with low-purity copper, high-purity copper has lower resistance, resulting in lower loss during current transmission and higher grounding efficiency. At the same time, high-purity copper has good ductility, which can be easily bent and cut during wiring to adapt to different installation environments, whether in walls, under floors, or on ceilings, it can be conveniently laid. In addition, high-purity copper has strong corrosion resistance. In humid environments such as kitchens and bathrooms in residences, it is not easy to be corroded and oxidized, and can maintain stable conductivity and structural integrity for a long time, reducing the risk of grounding failure caused by conductor corrosion and prolonging the service life of the wire.

Insulation layer material: The outer insulation layer is made of high-quality PVC (polyvinyl chloride) material. PVC material has excellent electrical insulation performance, with high insulation resistance, which can effectively block current leakage, prevent short circuits between the grounding line and other phase lines and neutral lines, and ensure the independence and safety of the grounding system. PVC material also has good wear resistance. During house wiring, the wire may rub against walls, pipes, etc., and the PVC insulation layer can resist these frictions to protect the internal Copper Conductor from damage. At the same time, PVC material has strong aging resistance, can maintain stable performance in different temperature and humidity environments, and is not easy to crack or harden after long-term use, ensuring that the protective effect of the insulation layer is long-term effective. In addition, PVC material has certain flame retardant performance, which can delay the combustion speed in case of open fire, reduce the risk of fire, and add protection for residential electrical safety.

Wire style: The wire adopts a green-yellow two-color design, which is an internationally general接地标识 with high recognition. In the complex wiring environment of a residence, there are various lines such as phase lines and neutral lines. The green-Yellow Wire allows construction personnel to quickly identify the earth cable, avoid confusion with other lines, thereby reducing the risk of wrong connection, and ensuring the correct connection of the grounding system. The wire has a compact structure and moderate diameter, which is convenient for laying in narrow spaces, such as wire pipes in walls and gaps under floors. At the same time, the wire has certain Flexibility, is not easy to break during bending and stretching, can adapt to different wiring paths, and meets various complex installation needs of residences. The surface of the wire is smooth and has no burrs, which will not scratch other lines or pipes during laying and is also convenient for construction personnel to operate.

Copper material screening and purification: At the beginning of production, strict screening of copper materials is carried out, and high-quality copper raw materials with high purity and few impurities are selected. The purity of copper materials is detected by advanced testing equipment to ensure that the purity reaches more than 99.9%. Copper materials that do not meet the requirements are resolutely rejected. Then, the screened copper materials are purified, and electrolytic refining is used to remove impurities in the copper materials to further improve the purity of copper. During the electrolytic refining process, electrolytic conditions such as current density and electrolyte concentration are strictly controlled to ensure the purification effect and lay the foundation for the production of high-quality conductors.

Copper conductor drawing and stranding: The purified copper material is drawn, and the copper material is drawn into Copper Wires of different diameters through a wire drawing machine to meet the needs of wires with different cross-sectional specifications. During the drawing process, a continuous drawing process is adopted to ensure that the diameter of the copper wire is uniform. At the same time, the drawing speed and tension are strictly controlled to avoid defects such as breakage and scratches of the copper wire. For wires with larger cross-sections, such as 4mm² and 6mm² wires, multiple copper wires need to be stranded. During the stranding process, a regular stranding process is adopted to ensure that the copper wires are arranged neatly and the tension is uniform, so as to improve the conductivity and mechanical strength of the conductor. The Stranded Conductor needs to undergo appearance and size inspection to ensure that it meets relevant standards.

PVC insulation layer extrusion: After the copper conductor is made, the extrusion process of the PVC insulation layer is carried out. First, PVC raw materials are mixed with various additives (such as plasticizers, stabilizers, flame retardants, etc.) in a certain proportion, and after stirring, plasticizing and other treatments, a uniform PVC mixture is made. Then, the PVC mixture is added to the extruder and heated to a molten state. The molten PVC material is evenly wrapped around the outer layer of the copper conductor through an extrusion die to form an insulation layer. During the extrusion process, the temperature, pressure and speed of the extruder are strictly controlled to ensure that the thickness of the insulation layer is uniform, the surface is smooth, and it is closely combined with the copper conductor without defects such as bubbles, pinholes and cracks. The extruded wire needs to be cooled to make the insulation layer quickly solidify and form.

Two-color logo printing: To form the green-yellow two-color grounding logo, a special two-color printing process is adopted. After the extrusion of the insulation layer, green-yellow alternating stripes are printed on the surface of the wire through printing equipment. During the printing process, the concentration of ink, printing speed and pressure are strictly controlled to ensure that the color is bright, the boundaries are clear, the adhesion is strong, and it is not easy to fall off. The printing position and spacing of the two-color logo are strictly in accordance with international standards to ensure the standardization and recognition of the grounding logo.

Finished product inspection: The finished wires need to undergo comprehensive finished product inspection. The inspection items include cross-sectional specifications, conductor resistance, insulation resistance, voltage resistance performance, mechanical strength, appearance quality, etc. Advanced testing equipment such as resistance testers, voltage resistance testers, and tensile testing machines are used to sample and test each batch of products. For unqualified products, rework or destruction is carried out to ensure that every meter of wire leaving the factory meets the IEC 60227 standard and relevant quality requirements. At the same time, the labels and packaging of the products are inspected to ensure that the information is complete and accurate.

Packaging materials: The PVC Insulated Wire is packaged in reels, and the reel materials are divided into cardboard and wood. Cardboard reels are made of high-strength corrugated cardboard, which has the advantages of light weight, low cost and easy recycling, and is suitable for packaging small-section (1.5mm², 2.5mm²) and short-length (50 meters, 100 meters) wires. Corrugated cardboard has certain compressive and moisture-proof properties, which can protect the wire from slight extrusion and moisture during transportation and storage. Wood reels are made of high-quality pine or fir, which have been dried, and have the characteristics of high strength and good stability, suitable for packaging large-section (4mm², 6mm²) and long-length (200 meters) wires. Wood reels can bear large weight and pressure, effectively preventing the wire from being deformed or damaged due to extrusion during transportation. Whether it is a cardboard reel or a wood reel, their surfaces are treated to be flat and smooth to avoid scratching the insulation layer when winding the wire.

Packaging methods: Different packaging methods are adopted according to the cross-sectional specifications and lengths of the wires. For small-section and short-length wires, they are neatly wound on the reel, and each circle of wire is closely arranged to avoid looseness. Then, the entire reel is wrapped with plastic film, which has good moisture-proof and dust-proof properties and can protect the wire from pollution by the external environment. A plastic bag printed with product information is put over the plastic film to further strengthen protection. For large-section and long-length wires, after being wound on the wood reel, wooden baffles are installed at both ends of the reel. The diameter of the baffles is larger than that of the reel, which can effectively prevent the wire from sliding off from both ends of the reel during transportation. Then, the wire and the reel are fixed together with packing belts to ensure that the wire does not loosen during transportation. Finally, a product label is pasted on the side of the reel, indicating the product's model, specification, length, rated voltage, production date, manufacturer and other information.

Packaging marks: The marks on the packaging are clear and standardized. In addition to the basic product information, they also print relevant warning signs and precautions. Warning signs include "Handle with Care", "Moisture-proof", "Sun-proof", "Keep Away from Fire", etc., to remind transportation and storage personnel to pay attention to relevant matters. The precautions indicate the storage environment requirements of the wire, such as being stored in a dry, ventilated and cool place, avoiding contact with corrosive substances, etc. At the same time, the packaging also prints the logo that the product meets the IEC 60227 standard, as well as the contact information of the manufacturer, which is convenient for users to consult and after-sales service.