The specification parameters of the 16 sq mm green PVC insulated stranded copper grounding cable are carefully designed to meet the strict requirements of electrical earthing and lightning protection, with clear and precise settings for each parameter.

The conductor of the cable is made of multi-stranded Copper Wires, with a single copper wire diameter of approximately 0.25mm and about 320 strands. The total cross-sectional area of the conductor is precisely controlled at 16 sq mm. This specification ensures that in case of electrical equipment leakage or lightning strikes, there is a sufficient cross-section to carry large currents and safely conduct the current into the ground. At an ambient temperature of 25°C, the DC resistance of the conductor is not greater than 1.15Ω/km. The excellent conductivity ensures smooth current transmission, reducing energy loss and voltage drop.

The insulation layer is made of green PVC material with a thickness of about 1.2mm. The insulation resistance is not less than 1000MΩ·km at 20°C, which can effectively isolate the electrical connection between the cable and other external objects, preventing electric leakage. The insulation layer has a wide temperature resistance range and can work normally in an environment of -15°C to 70°C. Even in cold winters or hot summers, it can maintain stable insulation performance. Its tensile strength is not less than 12MPa, and the elongation at break is not less than 150%, with good mechanical properties, which can withstand external forces such as stretching and bending during installation and use.

The overall outer diameter of the cable is about 10mm, and the proportion of the insulation layer thickness is reasonable, which not only ensures the insulation effect but also makes the cable not too bulky during installation, facilitating routing in narrow spaces. The rated voltage of the cable is 450/750V. Although the voltage in the grounding system is usually not high, this rated voltage can ensure the safe operation of the cable in special cases. In addition, the minimum bending radius of the cable is 10 times the outer diameter, i.e., 100mm, which can be bent according to actual needs during installation without affecting the cable performance.

In terms of lightning protection, the cable can withstand an 8/20μs waveform, 100kA lightning current impact, and the insulation resistance after impact can still remain within the specified range, fully demonstrating its reliability in lightning protection scenarios. At the same time, the cable has good acid and alkali resistance. After being immersed in 5% hydrochloric acid or sodium hydroxide solution for 24 hours, the insulation layer has no obvious damage, and the electrical performance will not drop significantly.

The 16 sq mm green PVC insulated stranded copper grounding cable, with its unique performance, has a variety of characteristic uses in the field of electrical earthing and lightning protection, providing reliable support for safety guarantee in different scenarios.

In the industrial field, the cable is widely used. There are many mechanical equipment in large industrial plants, such as CNC machine tools, stamping equipment, heavy cranes, etc. These equipment may have leakage due to insulation damage during operation. Connecting the cable between the equipment shell and the grounding body can timely conduct the leakage current into the ground, keep the ground voltage of the equipment shell within a safe range, and avoid electric shock accidents caused by operators touching the equipment. In chemical enterprises, there are often corrosive substances such as acids and alkalis in the production workshop. The PVC Insulation layer of the cable is corrosion-resistant and can work stably for a long time in such an environment, providing reliable grounding protection for various chemical equipment.

In commercial buildings, the electrical system is complex and diverse, and the 16 sq mm green PVC insulated stranded copper grounding cable also plays an important role. The central air conditioning system, elevator equipment, server rooms, etc. in office buildings all need reliable grounding. Taking the server room as an example, a large number of servers and network equipment will generate static electricity during operation. If not released in time, it may damage the equipment or affect data transmission. The cable can conduct static electricity into the ground through the grounding system, and at the same time, quickly conduct the current out when the equipment leaks, ensuring the safe operation of the equipment in the computer room. The lighting system, escalators, refrigeration equipment, etc. in shopping malls are grounded through the cable, which can form a unified grounding network and improve the safety and stability of the entire building's electrical system.

In terms of lightning protection, the cable performs particularly well. In building lightning protection projects, it is a key link connecting the air terminal and the grounding device. When the lightning rod or lightning strip receives the lightning current, the cable can withstand the strong current impact, safely and quickly conduct the lightning current into the grounding body, and then diffuse into the ground through the grounding body, thereby avoiding damage to the building's roof, walls, and internal electrical equipment, communication equipment, etc. caused by lightning. For tall buildings, such as TV towers and high-rise buildings, their lightning protection systems have extremely high requirements for cable reliability. The 16 sq mm cross-sectional area and excellent conductivity make it an ideal choice.

In the power system, the cable also has important applications. Substations are the core hubs of the power system. Equipment in the station, such as transformers, circuit breakers, disconnectors, etc., need reliable grounding and lightning protection. The cable can be used as the grounding lead of the equipment to connect the equipment with the grounding grid. When the equipment fails or is struck by lightning, it can quickly conduct the fault current or lightning current into the grounding grid, protect the insulation of the equipment from damage, and ensure the stable operation of the power system. The towers of transmission lines also need to be equipped with lightning protection grounding devices. The cable can connect the tower and the grounding body, and conduct the lightning current into the ground when the tower is struck by lightning, reducing the occurrence of lightning trip accidents.

In addition, the cable can also play an important role in some special places, such as hospitals and laboratories. Medical equipment in hospitals has extremely high requirements for grounding. Tiny leakage or interference may affect the normal operation of the equipment and even endanger the lives of patients. The cable can provide stable grounding for medical equipment to ensure the accurate operation of the equipment. Precision instruments in laboratories also need reliable grounding to eliminate electromagnetic interference and ensure the accuracy of experimental data. The low resistance and good shielding effect (if there is a shielding layer) of the cable can meet this demand.

The 16 sq mm green PVC insulated stranded copper grounding cable fully considers the special needs of electrical earthing and lightning protection in material selection and style design, achieving a perfect combination of performance and practicality.

The conductor is made of high-purity electrolytic copper with a purity of over 99.95%. High-purity copper has excellent conductivity because the arrangement of copper atoms is regular, and electrons are less hindered during transmission, enabling fast and smooth conduction of current. In grounding and lightning protection scenarios, this high conductivity is crucial. It can ensure that when a large current is generated instantly, the current can quickly be conducted into the ground through the conductor, avoiding excessive voltage due to excessive resistance, thereby protecting equipment and personnel safety. At the same time, high-purity copper has good ductility and toughness, which is not easy to break when processed into multi-Stranded Copper Wires and stranded, ensuring the structural stability of the conductor.

The insulation layer is made of high-quality green PVC material. PVC material, namely polyvinyl chloride, has good insulation performance. Its molecular structure contains no free electrons, which can effectively block the passage of current, thereby playing an insulating role and preventing the cable from electrical connection with external objects leading to electric leakage. The green color design is not arbitrary but follows the general standards in the industry. Green is the special identification color for grounding cables. This design enables construction personnel to quickly identify the grounding cable in complex construction sites, reducing the probability of wiring errors and improving construction efficiency and safety. In addition, the PVC material is also added with antioxidants, ultraviolet absorbers and other additives, making it have good weather resistance. It is not easy to age and crack under natural environments such as sun exposure, rain and snow erosion, and can maintain stable performance for a long time. At the same time, it also has certain chemical corrosion resistance, which can resist the erosion of acids, alkalis, oil stains and other substances, and protect the internal conductor from damage.

In terms of style, the cable is cylindrical as a whole with a compact structure. The multi-stranded copper Stranded Conductor is tightly wrapped by a uniform green PVC insulation layer, forming a solid whole. This structure makes the cable have good Flexibility. During installation, it can be bent and dragged according to actual needs, and can adapt to various complex installation paths, such as passing through pipes in walls and floors, bypassing other pipelines, etc. The surface of the cable is smooth and flat with a small friction coefficient, which can reduce friction with other objects during installation and reduce the risk of damage to the insulation layer.

The cable has various length specifications, with common roll products of different lengths such as 50m, 100m, 200m, and 500m, which can meet the needs of different project scales. For large industrial projects or construction projects, long-length roll cables can be selected to reduce the number of joints and improve the reliability of the grounding system; for small equipment grounding or maintenance replacement, short-length cables can be selected to avoid material waste.

The production process of the 16 sq mm green PVC insulated stranded copper grounding cable adopts advanced and rigorous techniques, and each process is strictly controlled to ensure that the product quality meets the high standards of electrical earthing and lightning protection.

The first step is the preparation of copper materials. High-purity electrolytic copper ingots are selected as raw materials for smelting. The smelting process is carried out in a sealed furnace, and the temperature is controlled at about 1083°C to completely melt the copper ingots. During the smelting process, methods such as inert gas protection are used to prevent copper from being oxidized. At the same time, refining technology is used to remove impurities in copper, such as iron, lead, zinc, etc., to ensure that the purity of copper reaches more than 99.95%. The molten copper is cast into copper rods with a diameter of about 8mm, and the surface is smooth without cracks, bubbles and other defects.

Next is the wire drawing process. The copper rod is drawn into fine copper wires by a wire drawing machine. The wire drawing process adopts multi-pass continuous drawing, and each pass of the drawing die is precision machined to ensure the dimensional accuracy of the copper wire. According to the requirement of the final single copper wire diameter of 0.25mm, after multiple drawings, the 8mm copper rod is gradually drawn into fine copper wires of the required diameter. During the wire drawing process, a special wire drawing lubricant is used, which can not only reduce the friction between the copper wire and the die but also play a cooling role, preventing the copper wire from performance degradation due to overheating. At the same time, the drawing speed and tension must be strictly controlled to ensure that the mechanical properties and electrical conductivity of the copper wire meet the requirements. The drawn copper wire needs to be annealed. The copper wire is heated to 300-400°C and kept for a certain period of time to eliminate the internal stress generated during the drawing process and improve the flexibility and ductility of the copper wire.

Then is the stranding process. Multiple strands of fine copper wires are stranded to form a conductor. According to the requirement of 16 sq mm cross-sectional area, 320 strands of copper wires with a diameter of 0.25mm need to be stranded. The stranding process is carried out on a special stranding machine, using a regular stranding method, that is, the copper wires are stranded together according to a certain pitch, which is usually 12-16 times the diameter of the conductor. This stranding method can ensure that each strand of copper wire is evenly stressed and reasonably distributed, making the conductor have good flexibility and fatigue resistance. During the stranding process, the stranding tension and speed must be strictly controlled to avoid loosening and breaking of the copper wires. After stranding, the conductor needs to undergo appearance and size inspection to ensure that its roundness and cross-sectional area meet the requirements.

After stranding, the insulation extrusion process is carried out. Green PVC particles are added to the hopper of the extruder. The PVC particles are heated and melted in the extruder, and the temperature is controlled at 160-180°C. The molten PVC material is evenly extruded and coated on the outside of the conductor through an extrusion die to form an insulation layer. The size of the extrusion die is accurately calculated to ensure that the thickness of the insulation layer meets the design requirement of 1.2mm and is uniform. During the extrusion process, the extrusion speed, temperature and pressure must be strictly controlled to ensure that the insulation layer is closely combined with the conductor without defects such as bubbles, pinholes and material shortage. The extruded cable enters the cooling water tank for cooling to quickly solidify and shape the PVC insulation layer. The cooling water temperature is controlled at 20-30°C, and the cooling time is adjusted according to the linear speed of the cable to ensure that the insulation layer is completely solidified.

The cooled cable needs to undergo a series of quality inspections. Electrical performance testing includes insulation resistance testing, DC resistance testing, etc. Professional instruments are used to measure the insulation resistance and conductor DC resistance to ensure that they meet the specified requirements. Mechanical performance testing includes tensile testing, bending testing, etc., to test the tensile strength, elongation at break of the insulation layer and the bending performance of the cable. Appearance inspection is to check the surface of the cable for smoothness, uniform color, scratches, dents and other defects with the naked eye or a magnifying glass. In addition, weather resistance testing and corrosion resistance testing will also be carried out. Samples are placed in specific environments to simulate natural conditions and chemical corrosion environments to observe changes in cable performance.

The cables that pass the quality inspection enter the coiling and printing process. The coiling machine winds the cable into reels according to the specified length (such as 50m, 100m, etc.). The reel is made of hard plastic or wood, which has a certain strength and can protect the cable from damage during subsequent transportation and storage. At the same time, product marks will be printed on the surface of the cable's insulation layer, including model, specification, rated voltage, manufacturer, production date and other information. The marks are clear and wear-resistant, which is convenient for users to identify and trace.

The packaging design of the 16 sq mm green PVC insulated stranded copper grounding cable focuses on protecting the product, facilitating transportation and storage, while emphasizing the clarity of identification and the convenience of use. Different packaging methods are adopted according to the length of the cable and transportation needs.

For cables with lengths of 50m and 100m, hard plastic reels are usually used for packaging. The diameter of the reel is about 400mm. Both sides of the reel are provided with circular baffles. The diameter of the baffle is 100mm larger than the main body of the reel, and the thickness of the baffle is about 15mm. It is made of high-strength plastic, which has good compression and impact resistance, and can effectively prevent the cable from sliding off from both sides of the reel during transportation and storage, protecting the cable from collision and extrusion. The center of the reel is provided with a metal shaft sleeve with a diameter of about 50mm, which is convenient for using a pay-off stand during the pay-off process and improves construction efficiency. When the cable is wound on the reel, it is arranged neatly and tightly without loosening or knotting. After winding, the outer part of the reel is wrapped with a layer of thickened plastic film with a thickness of about 0.15mm, which has good moisture-proof and dust-proof performance and can protect the insulation layer of the cable from pollution and damage from the external environment. A product label is affixed to the side of the reel, which details the product name, model, specification, length, production date, batch number, manufacturer and other information.

For cables with lengths of 200m and 500m, large wooden reels are used for packaging. The diameter of the wooden reel is about 600-800mm, which varies according to the length of the cable. The frame of the reel is made of high-quality pine wood, which has been dried, and the moisture content is controlled below 15% to prevent the reel from deforming during use. The thickness of the reel baffle is about 20mm, which is fixed to the frame by bolts, and the structure is firm. After the cable is wound on the wooden reel, it is also wrapped with a layer of plastic film, and then the reel is fixed with strapping tape. The strapping tape is made of high-strength polypropylene material with a width of about 16mm to ensure that the reel will not loosen during transportation. In addition to the product label, the wooden reel is also marked with information such as the weight of the reel and the maximum bearing pressure, which is convenient for transportation and loading and unloading.

For small batches of short-length cables, such as 10m and 20m long cables used for maintenance and replacement, sealed plastic woven bags are used for packaging. The plastic woven bag is made of polyethylene material, which has good wear resistance and tear resistance. The bag mouth is designed with a rope buckle for easy sealing and opening. Each woven bag contains a reel of cable, and the bag is printed with brief product information, such as model, specification, length, etc., which is convenient for users to quickly identify.

During transportation, to further protect the cables, multiple reels or woven bags are neatly stacked on pallets. The pallets are made of wood or plastic, with a size of 1200mm×1000mm, which can bear a large weight. The reels or woven bags are fixed with strapping tape to ensure that they will not shift during transportation. For exported products, the wooden packaging will be fumigated and accompanied by a fumigation certificate to meet international quarantine standards.

The transportation of the 16 sq mm green PVC insulated stranded copper grounding cable strictly follows relevant norms and standards to ensure that the products are not damaged during transportation and arrive at the destination safely and on time. The mode of transportation is selected according to the transportation distance, quantity and customer requirements.

For domestic short-distance transportation (usually within 500 kilometers), road transportation is mainly adopted, using closed trucks. The truck compartment must be kept clean and dry, without sharp debris, corrosive substances and flammable and explosive materials, so as to prevent scratching the cable packaging and insulation layer. When loading, the reel-packaged cables should be placed horizontally in the compartment, and the reels should be separated by partitions to avoid mutual collision and friction. For long-length cables packaged with wooden reels, forklifts are used for loading and unloading. The fork teeth of the forklift should be covered with protective pads to prevent damage to the reels. The loading height shall not exceed 80% of the compartment height, and the center of gravity of the goods shall be as low as possible to ensure stability during driving. During transportation, drivers must abide by traffic rules, avoid sudden braking, sharp turns and other operations, and reduce the shaking of goods. At the same time, direct sunlight on the compartment should be avoided, and a sunshade can be covered on the top of the compartment to prevent the cable insulation layer from aging due to high temperature.

For long-distance transportation (more than 500 kilometers), railway transportation or logistics dedicated line transportation can be chosen. Railway transportation has the advantages of large transportation volume, good stability and little influence by weather, which is suitable for transporting large quantities of cables. The cables are loaded into railway boxcars or containers, and moisture-proof pads are laid inside the containers to prevent the cables from getting damp. The reels are filled with buffer materials (such as foam boards, bubble films) to reduce vibration and collision during transportation. Logistics dedicated line transportation is undertaken by professional logistics companies. They will formulate a reasonable transportation plan according to the characteristics of the cables, arrange experienced drivers and appropriate transport vehicles, and track the goods throughout the process, and timely feedback the transportation status of the goods to customers.

For exported products, sea or air transportation is adopted. Sea transportation is suitable for large quantities and long-distance transportation. The cables are loaded into containers, which need to be moisture-proof and pressure-proof. During loading, ensure that the goods are fixed firmly to avoid moving during navigation. Air transportation is fast and suitable for emergency orders, but the cost is high. It is usually used for small batches and high-value goods transportation. The protection of cables should also be paid attention to during transportation.

During transportation, if encountering bad weather (such as rainstorm, high temperature, severe cold, etc.), the transport personnel must take corresponding protective measures. In rainy weather, check the sealing of the compartment to prevent rainwater from entering the compartment and wetting the cables; in high temperature weather, strengthen the ventilation and cooling of the compartment; in severe cold weather, prevent the cables from becoming brittle and damaged due to low temperature. After arriving at the destination, unload with care, use appropriate loading and unloading tools, and avoid rough operation that may damage the cables.

The delivery process of the 16 sq mm green PVC insulated stranded copper grounding cable is efficient and standardized to ensure that customers receive the products in a timely manner. After the customer places an order, the warehouse staff will first check the order information, including product model, specification, quantity, delivery address, etc., to ensure consistency with the customer's requirements.

For in-stock products, the warehouse will arrange delivery within 24-48 hours after receiving the order. The warehouse staff will pick the goods according to the order, carefully check the product labels and packaging to ensure that the products are not damaged and meet the specifications. After picking, the goods are repacked and reinforced to prevent damage during transportation. For large quantities of goods, a delivery note is attached, which includes product information, quantity, order number, etc., for customers to check when receiving the goods.

For out-of-stock products, the company will arrange production as soon as possible according to the order quantity and specifications. The production cycle is generally 7-15 days, depending on the product specifications and production schedule. During the production process, customers can inquire about the production progress at any time, and the after-sales staff will feedback the information in a timely manner. After the production is completed, the products will undergo strict quality inspection, and after passing the inspection, they will be delivered according to the above process.

The company cooperates with a number of logistics companies to provide customers with a variety of delivery methods, including express delivery and logistics dedicated lines. Customers can choose the appropriate delivery method according to their own needs. For urgent orders, the company can arrange for expedited delivery to ensure that the products reach the customers within the specified time.

In order to facilitate customers to understand the quality and performance of the 16 sq mm green PVC insulated stranded copper grounding cable, the company provides sample services. Customers can apply for samples of corresponding specifications according to their needs.

The sample application process is simple. Customers can submit a sample application form through the company's official website, email or phone call, indicating the required product model, specification, quantity, their contact information and delivery address. The company will review the application within 24 hours. After approval, the samples will be sent to the customer within 3-5 days.

The samples provided are of the same quality as the formal products, and are produced in accordance with the same production process and quality standards. Each sample is attached with a sample label indicating the product model, specification, production date, etc., for customers' reference. The company provides free samples, but customers need to bear the freight. For customers who place large orders after checking the samples, the company can refund the sample freight.

After receiving the samples, customers can conduct various performance tests, such as conductivity test, insulation performance test, bending test, etc., to verify whether the product meets their needs. The company's technical staff can provide professional technical support and answer relevant questions during the customer's test.

The company attaches great importance to after-sales service and provides comprehensive after-sales guarantee for the 16 sq mm green PVC insulated stranded copper grounding cable to solve customers' worries.

If the product has quality problems within the warranty period (usually 2 years), such as insulation layer damage, conductor breakage, unqualified electrical performance, etc., customers can contact the company's after-sales department with the purchase invoice and product photos. The after-sales staff will respond within 24 hours, and after confirming the problem, provide solutions such as replacement or repair free of charge.

The company has a professional after-sales technical team, which can provide technical guidance for customers' installation and use. If customers encounter problems in the process of cable installation, such as unclear wiring methods and improper installation positions, they can consult the after-sales technical team at any time. The technical team will provide detailed solutions through phone calls, videos or on-site guidance.

In addition, the company regularly conducts follow-up visits to customers who have purchased products to understand the use of the cables and collect customers' opinions and suggestions. For the problems and suggestions put forward by customers, the company will seriously study and deal with them, and continuously improve the product quality and service level.

The company also provides product maintenance and maintenance guidance. It will issue product maintenance manuals to customers, which detail the daily maintenance methods and precautions of the cable, such as avoiding excessive bending, preventing contact with corrosive substances, etc., to help customers extend the service life of the cable. If customers need maintenance services, the company can also arrange professional technicians to provide on-site maintenance.

In case of disputes during the after-sales process, the company will handle them in accordance with relevant national laws and regulations and the terms of the sales contract, and strive to reach a satisfactory solution with customers. The company's aim is to provide customers with high-quality products and satisfactory services, and establish long-term and stable cooperative relations with customers.