Rated Voltage: The rated voltage of this wire is 600V, which is set according to the common needs of medium and low-voltage power distribution systems and can be stably applied to low-voltage power consumption scenarios of various buildings and industrial equipment. In actual operation, its working voltage is always controlled within the range of the rated voltage to ensure the stability and safety during power transmission and avoid problems such as insulation layer damage caused by excessive voltage.

Conductor Specification: The cross-sectional area of the conductor is 14mm², and this specification is determined through strict electrical calculations, which can meet the power demand of medium and high-power equipment. The conductor is made of high-purity electrolytic copper with a purity of over 99.95%. The high-purity copper material ensures excellent conductivity, with a conductivity of more than 100% IACS (International Annealed Copper Standard), which can effectively reduce energy loss during current transmission. In terms of current-carrying capacity, when the wire is laid in air, the current-carrying capacity can reach 70-80A, and the specific value will be adjusted according to the ambient temperature and laying method. For example, when the ambient temperature rises, the current-carrying capacity will be appropriately reduced to prevent the wire from overheating; when laid through a pipe, due to relatively poor heat dissipation conditions, the current-carrying capacity will also be about 10%-20% lower than when laid in air.

Conductor Structure: The conductor adopts a stranded structure, which is composed of multiple thin copper wires with a diameter of 0.52mm, usually 37 wires. The stranding pitch is strictly controlled between 15-20mm. The reasonable pitch design not only enhances the Flexibility of the conductor, facilitating operations such as bending and threading in complex wiring environments, but also reduces the loss caused by the current skin effect, and at the same time improves the tensile and vibration resistance of the conductor, prolonging the service life of the wire.

Insulation Layer Parameters: The insulation layer is made of PVC material with a thickness of about 1.0-1.2mm. For the Thw model, its insulation layer has undergone special treatment, with good moisture resistance, and can work in 60℃ water for a long time; the insulation layer of the Tw model focuses on performance in dry environments, with a temperature resistance level of 60℃. The insulation resistance of both models is not less than 100MΩ, which can effectively prevent current leakage and ensure electrical safety. In addition, the tensile strength of the insulation layer is not less than 12MPa, and the elongation at break is not less than 150%, which has good mechanical properties and can resist certain external impacts.

Overall Size: The overall outer diameter of the wire is determined by the conductor diameter and the thickness of the insulation layer, which is about 6.5-7.0mm. This size design not only ensures the stability of the internal structure of the wire but also facilitates laying in narrow spaces such as pipes and trunking, without increasing the construction difficulty due to excessive outer diameter.

Length Specification: Common wire lengths on the market include 100 meters, 200 meters, 300 meters, 500 meters, etc., in coiled packaging. They can also be customized according to the special needs of customers, with a maximum customization length of 1000 meters. The length error is controlled within ±0.5% to ensure that the actual length is basically consistent with the marked length, meeting the laying needs of different projects.

Weight Parameters: The weight of each meter of wire is about 0.16kg, and the weight of a 100-meter-long wire is about 16kg. This weight is convenient for handling during transportation and installation and will not bring too much burden to construction personnel.

Industrial Field: In industrial production, 14mm² Thw/Tw 600V PVC Insulated Copper Wires are widely used. Power supply circuits of production line equipment such as CNC machine tools, packaging machinery, and printing equipment often use this wire, and its stable current-carrying capacity can ensure the continuous operation of the equipment. Pumps and fans, as common power devices in industrial production, have high requirements for the stability of power supply. This wire can provide reliable power transmission for them to ensure the normal operation of the equipment. In some humid industrial environments, such as cleaning workshops in food processing plants and pulping workshops in paper mills, the moisture resistance advantage of Thw model wires is reflected, and they can work stably in humid environments for a long time.

Commercial Building Field: Large central air conditioning systems in commercial buildings have large power and require stable power supply. This wire can be used as its main power supply line to ensure the normal operation of the air conditioning system. Equipment such as elevator traction machines in elevator machine rooms also rely on this wire for power transmission, and its good mechanical properties can withstand slight vibrations generated during elevator operation. In addition, the distribution trunk lines of commercial buildings also often use this wire to distribute power from the distribution room to various floors and areas, meeting the needs of many electrical equipment in commercial places.

Civil Building Field: In civil buildings, this wire can be used as an incoming line to introduce external power into the residence. For the main lines in the residence, such as the lines from the main distribution box to each branch distribution box, the 14mm² wire can meet the total power demand of various electrical appliances in the home. Some high-power electrical appliances, such as electric heating equipment, whole-house water purification equipment, and instant electric water heaters, usually have a power of more than 10kW and require a dedicated power supply line. This wire can provide safe and stable power support for them. In humid areas such as bathrooms and basements, Thw model wires can be selected, while in dry areas such as living rooms and bedrooms, Tw model wires can be selected.

Public Facilities Field: Power systems in public facilities such as hospitals, schools, and gymnasiums also often use this wire. Some medical equipment in hospitals, such as X-ray machines and nuclear magnetic resonance instruments, have high requirements for power quality, and this wire can ensure the stability of their power supply. Power supply lines for school laboratory equipment, gymnasium lighting systems, and ventilation equipment can also use this wire to meet the power demand of public facilities.

Conductor Material: The conductor is made of high-purity electrolytic copper. Electrolytic copper removes impurities through electrolytic refining process, and has extremely high conductivity and good ductility. This kind of copper wire is not easy to break during stranding, which can ensure the structural stability of the conductor. At the same time, electrolytic copper has good oxidation resistance, and is not easy to be oxidized during long-term use, ensuring that the conductivity will not decrease significantly.

Insulation Layer Material: The insulation layer is made of high-quality polyvinyl chloride (PVC) material, which has good insulation performance, chemical corrosion resistance, and processing performance. PVC material is insoluble in water and most organic solvents, and can resist the erosion of acids, alkalis, and other chemical substances that may be encountered in the building environment. In addition, this material has certain flame retardant performance, meets relevant fire safety standards, and can delay the spread of fire in case of fire.

Style Design: The wire is cylindrical in shape with a smooth and flat appearance. The insulation layer has various colors, commonly including black, red, blue, etc. Wires of different colors are convenient for distinguishing phase sequences and circuits during wiring. For example, black can be used as the phase line, blue as the neutral line, and yellow-green as the ground line (it should be noted that the wire itself is not directly used as the ground line, which is only an example of color distinction here). The wire is usually packaged in coils, and the reel is made of high-strength plastic, which is convenient for storage and transportation, and also convenient for construction personnel to pay off during laying.

Copper Smelting and Drawing: First, high-purity copper raw materials are put into a melting furnace for smelting to remove impurities, and copper water with a purity of over 99.95% is obtained. The copper water is made into copper rods through continuous casting process, and the diameter of the copper rods is determined according to the diameter of the final copper wire. Then, the copper rod is drawn through a wire drawing die. During the drawing process, the copper rod is gradually drawn to the required diameter (0.52mm). During the drawing process, it is necessary to strictly control the drawing speed and the cooling temperature of the die to ensure that the diameter of the copper wire is uniform, the surface is smooth, and there are no scratches, cracks, or other defects. The drawn copper wire also needs to be annealed, and the copper wire is heated to a certain temperature and then slowly cooled to eliminate the internal stress generated during the drawing process and improve the flexibility and ductility of the copper wire.

Conductor Stranding: Multiple drawn fine copper wires (37 wires) are stranded at a certain pitch (15-20mm) by stranding equipment. The stranding equipment can accurately control the tension of each copper wire to ensure that the Stranded Conductor has a compact and round structure, avoiding loose strands, broken wires, and other phenomena. During the stranding process, the diameter of the conductor also needs to be monitored in real-time to ensure that it meets the cross-sectional area requirement of 14mm².

Insulation Layer Extrusion: The extrusion molding process is used to wrap the PVC Insulation layer on the outer layer of the stranded conductor. First, PVC particles are heated to a molten state, and then the molten PVC material is evenly coated on the surface of the conductor through the die of the extruder. During the extrusion process, it is necessary to accurately control the extrusion temperature (usually 160-180℃), extrusion speed, and pressure to ensure that the insulation layer has a uniform thickness (1.0-1.2mm), a smooth surface, and is tightly combined with the conductor without bubbles, impurities, or other defects. For the Thw model wire, after extruding the insulation layer, special moisture-resistant treatment is required, such as coating a moisture-resistant coating on the surface of the insulation layer to enhance its water resistance.

Quality Inspection: Strict quality inspection procedures are set up in each link of the production process. After copper wire drawing, parameters such as diameter, tensile strength, and elongation of the copper wire are tested; after conductor stranding, DC resistance, cross-sectional area, etc., of the conductor are tested; after insulation layer extrusion, thickness, temperature resistance, insulation resistance, voltage resistance performance, etc., of the insulation layer are tested. The finished wire also needs to undergo bending test, wear test, aging test, etc., to ensure that each batch of products meets relevant standards and quality requirements. For example, in the withstand voltage test, the wire must not break down under 1500V voltage for 1 minute to verify the reliability of its insulation performance.

Packaging Materials: The wire uses high-strength plastic reels as the main packaging material. The plastic reels have the characteristics of compression resistance, drop resistance, and corrosion resistance, which can effectively protect the wire from damage during transportation and storage. The inner diameter of the reel is 50-60mm, and the outer diameter depends on the length of the wire. For example, the outer diameter of the reel for a 100-meter-long wire is about 300mm, and that for a 500-meter-long wire is about 500mm. There are baffles at both ends of the reel to prevent the wire from loosening during storage and transportation. For coiled wires, plastic film is also used for wrapping packaging, which has moisture-proof and dust-proof effects and can further protect the wire from the external environment.

Packaging Method: The wire is neatly wound on the plastic reel, and each layer must be tightly arranged without crossing. After winding, wrap the reel from one end to the other with plastic film to ensure that the entire reel is tightly wrapped. On the packaging, the product name, model (Thw/Tw), specification (14mm², 600V), length, production date, batch number, execution standard, manufacturer name, and contact information are clearly marked. For large quantities of products, pallets are used for collective packaging. Each pallet can hold 10-20 reels of wires, and the pallets are made of wood or plastic, which is convenient for forklift handling.

Packaging Marks: In addition to basic product information, the packaging also prints some warning marks, such as "Keep Away from Fire", "Moisture-Proof", "Handle with Care", etc., to remind transportation and storage personnel to pay attention to relevant matters. The marks are printed with wear-resistant ink, with clear and firm handwriting, not easy to fade, ensuring that they can be clearly seen in the entire circulation link.

Transportation Methods: According to the customer's geographical location and order quantity, select the appropriate transportation method. For short-distance transportation (such as within a radius of 500 kilometers), road transportation is usually adopted, and van trucks can be selected. The carriage is equipped with moisture-proof and shock-proof facilities to prevent the wires from being exposed to the sun, rain, and severe collision during transportation. For long-distance transportation, railway transportation or water transportation can be used. These two transportation methods have large transportation capacity and low cost, and are suitable for transporting large quantities of goods. Railway transportation usually uses container transportation, which can effectively protect the wires; water transportation requires storing the wires in the cabin and taking moisture-proof and fixing measures. For emergency orders, air transportation can be adopted to ensure that the products are delivered to customers in the shortest time.

Transportation Precautions: During transportation, the wires should avoid severe collision, extrusion, exposure to the sun, and rain. When loading, the wire reels should be placed horizontally, avoiding stacking too high, with a stacking height not exceeding 3 layers, and uniform weight distribution to prevent the transport vehicle from tilting. For products packaged with pallets, the pallets must be fixed on the transport vehicle with strapping to prevent the pallets from sliding during transportation. During transportation, the wire should be avoided from contact with sharp objects to avoid damaging the insulation layer. At the same time, the temperature of the transportation environment should be controlled between -20℃ and 50℃, and the relative humidity should not exceed 85% to avoid extreme temperatures and humid environments affecting the performance of the wire.

Transportation Tracking: Provide customers with full transportation tracking services. Through the logistics information system, customers can query the transportation location, transportation status, and estimated arrival time of the wires in real-time. If abnormal situations are encountered during transportation, such as traffic jams and bad weather, the logistics company will communicate with customers in a timely manner, explain the situation, and adjust the transportation plan to ensure that the wires can arrive on time.

Delivery Process: After receiving the customer's order, first conduct order review to confirm whether the product model, specification, quantity, delivery date, and other information are consistent with the customer's needs. After passing the review, notify the warehouse department to prepare goods. Warehouse personnel retrieve the corresponding products from the inventory according to the order information, conduct quantity checking and appearance inspection to ensure that the product packaging is intact, the logo is clear, and there is no damage. After goods preparation is completed, carry out reinforced packaging according to the specified packaging method (if necessary) and arrange transportation. Before delivery, the delivery information (including logistics company name, waybill number, estimated arrival time, etc.) is notified to the customer via SMS, email, etc., to facilitate the customer to prepare for receipt.

Delivery Time: For products in stock, delivery is completed within 1-3 working days after order confirmation; for products that need customized lengths, production and delivery are completed within 5-7 working days according to the customized length and quantity. During the peak delivery period, production and goods preparation will be arranged in advance to ensure on-time delivery without delaying the customer's project progress.

Delivery Inspection: Before delivery, quality inspectors conduct a final inspection of the wires, including appearance quality (whether the insulation layer is damaged, scratched, whether the color is uniform, etc.), whether the logo is clear and complete, whether the length meets the requirements, etc. At the same time, randomly select some wires for electrical performance testing, such as insulation resistance test and DC resistance test, to ensure that the product quality meets relevant standards. Only products that pass the inspection can be delivered.

Sample Provision: To allow customers to better understand the performance and quality of the product, the company provides sample services. Customers can apply to the company for samples of 14mm² Thw/Tw 600V PVC insulated copper wires according to their own needs, and the number of samples is usually 1-2 meters. The production process and quality standards of the samples are consistent with those of bulk products, which can truly reflect the actual situation of the products.

Sample Fees: The samples themselves are provided free of charge, but the transportation cost of the samples is borne by the customer. Customers can choose to pay the freight by cash on delivery or pay the freight to the company in advance, and the company will arrange transportation on their behalf. If the customer places a bulk order later, the transportation cost of the samples can be deducted from the payment.

Sample Delivery: After the samples are prepared, they are sent to customers by express within 1-2 working days, and the express tracking number is promptly informed to the customer to facilitate the customer to track the logistics information of the samples. The samples are packaged in small plastic reels or sealed bags to ensure that the samples are not damaged during transportation.

Quality Assurance: The company provides a 1-5-year quality guarantee period for 14mm² Thw/Tw 600V PVC insulated copper wires, and the specific guarantee period depends on the use scenario of the product

After-sales Service Response: A dedicated after-sales service team is established, equipped with a 24-hour hotline and a special email address . Customers can reach out through various channels, including phone calls, emails, online live chat on the official website, and social media platforms. After receiving a customer's inquiry or complaint, the after-sales staff will respond within 1 hour to acknowledge receipt and ask for relevant details. A preliminary solution will be proposed within 24 hours, and if on-site inspection or maintenance is required, the company will arrange for technicians to arrive at the site within 48-72 hours depending on the distance.

Technical Support: The company provides comprehensive technical support to assist customers in using the product correctly. This includes offering detailed product manuals, installation guides, and wiring diagrams that specify the correct methods for laying, connecting, and maintaining the wire. Technical consultants are available to answer professional questions, such as how to select the appropriate wire model based on the environment, how to calculate the current-carrying capacity under specific conditions, and how to handle special situations during installation. For large-scale projects, the company can dispatch technical teams to the construction site for on-site guidance, conduct pre-installation training for construction personnel, and supervise the installation process to ensure compliance with specifications. Additionally, regular online technical seminars are held to share industry knowledge, new standards, and practical experience in wire applications.

Return and Exchange Policy: If customers find that the received wires have quality defects (such as insulation layer damage, conductor breakage, or inconsistent specifications) or do not match the order requirements (wrong model, size, or length) within 7 days of receipt, they can apply for return or exchange. To initiate the process, customers need to provide photos or videos of the problem, the original purchase invoice, and the packaging. After the company's quality inspection department confirms the issue, a return or exchange will be arranged immediately. The round-trip transportation costs for valid return or exchange requests are borne by the company. For returns or exchanges caused by customer factors—such as incorrect order placement, changes in project plans, or damage due to improper storage or installation—the customer is responsible for the transportation costs and depreciation fees. The depreciation fee is calculated based on the degree of use and damage of the product, generally ranging from 10% to 30% of the product price.