Shaanxi Jinshenghong Cable Co., Ltd. is one of the most reliable manufacturers and suppliers of solar panels cables in China. Please feel free to wholesale high quality customized products at low price from our factory. For free sample and cheap products, contact us now.
Solar panels cables are a key guarantee for the safe and efficient operation of power plants. It is different from ordinary wires and must meet the strict requirements of weather resistance, temperature resistance, corrosion resistance, and fire prevention for long-term outdoor use. JSH Cable specializes in producing and selling photovoltaic cables, and TUV certification ensures electrical safety.
| Brand: | JSH Cable |
| Rated voltage: | 1500V |
| Maximum conductor DC resistance at 20 ℃ (Ω/km): | Varies depending on the cross-section. For example: 4 mm ²: 5.09-6-2-43, 6 mm ²: 3.39 |
| Voltage withstand test: | AC 6.5kV/DC 15kV, continuous for 5 minutes without breakdown |
| Reference current carrying capacity (A): | 4 mm ²: approximately 55A, 6 mm ²: approximately 70A |
| Working environment temperature: | -40 ° C to+90 ° C |
| Maximum conductor temperature: | +120 ° C |
| Short circuit allowable temperature: | 200 ° C (maximum 5 seconds) |
| Minimum bending radius: Fixed installation: | ≥ 4 x cable outer diameter; Mobile installation: ≥ 5 x outer diameter |
| Conductor material: | Stranded tinned copper |
| Insulation/sheath material: | Irradiated cross-linked polyethylene (XLPE) or irradiated cross-linked low smoke halogen-free (XLPO, i.e. cross-linked polyolefin) |
Products parameter
| Construction | Nominal Cross-section (mm²) | Conductor Structure (No./mm) | Overall Diameter (mm) | Approx. Weight (kg/km) | Current Carrying Capacity (A, reference) |
| Single Core | 2.5 | 49/0.25 | 5.4 - 5.9 | 49 - 60 | 41 |
| 4 | 56/0.30 | 5.9 - 6.6 | 71 - 80 | 55 | |
| 6 | 84/0.30 | 6.3 - 7.9 | 94 - 107 | 70 | |
| 10 | 84/0.40 | 8.8 - 9.2 | 155 - 163 | 98 | |
| 16 | 128/0.40 | 10.1 - 11.0 | 215 - 245 | 132 | |
| 25 | 199/0.40 | 12.5 | 339 | 176 | |
| 35 | 278/0.40 | 14 | 455 | 218 | |
| Twin Core "Figure-8" | 2.5 | 49/0.25 | 5.0 x 10.6 | 53 | 30 |
| 4 | 56/0.30 | 6.1 x 12.3 | 77 | 50 | |
| 6 | 84/0.30 | 6.4 x 12.9 | 104 | 70 |
How to choose the appropriate photovoltaic line
Key Selection Points at a Glance
The table below provides a quick overview of the key characteristics:
| Aspect | DC Side | AC Side |
|---|---|---|
| Application | Solar panels → Combiner box → Inverter | Inverter → Grid/Loads |
| Core Requirements | Outdoor use: must be moisture-proof, UV-resistant, and weather-resistant | Safe transmission: follow standard building wire specifications; must be flame-retardant |
| Recommended Type | PV DC cable (e.g., PV1-F, H1Z2Z2-K) | BVR (flexible copper wire) or YJV (XLPE insulated power cable) |
| Conductor Material | Copper recommended; tinned copper is better for conductivity and corrosion resistance | Copper for low loss and high reliability |
| Common Sizes | Most common 4 mm²; smaller home systems or low current can use 2.5 mm²; high current or long distance choose 6 mm² or larger | Depends on inverter power and current; available from 1.5 mm² and up |
1. Understanding PV Wire Types
Two main types of wires are used in PV systems:
PV DC Cable: This is a specialized cable for PV systems. It acts like a "protective suit" designed for outdoor environments. Typically manufactured using irradiation cross-linking technology, it offers excellent weather resistance (resists -40°C cold and up to 120°C heat), UV resistance, ozone resistance, and chemical corrosion resistance, ensuring reliable operation for over 25 years even in extreme weather.
AC Wire: Used to connect the inverter to the grid or household loads, this is standard building wire. The key is to select a product that complies with local electrical codes based on load power, and it should generally have at least Class C flame retardancy.
2. Wire Size and Selection Criteria
The most critical parameters when selecting a wire are cross-sectional area (thickness) and voltage rating.
Cross-sectional area (mm² / AWG): Determines the current-carrying capacity. A larger cross-section can carry more current but costs more and is harder to install. Selection depends on two factors:
System current: The primary factor. High-power modules or parallel strings generate higher current, requiring thicker cables.
Cable length: An often overlooked factor. Cables have resistance, and the longer the cable, the greater the energy loss due to voltage drop.
Key Design Rule: Control Voltage Drop
According to national standard GB50797-2012, voltage drop must be strictly limited to ensure system efficiency:
DC side: Voltage drop should not exceed 2%.
AC side: Voltage drop should not exceed 3%.
Example: If the DC operating voltage is 600 V, a 2% drop equals 12 V. If the module current is 13 A and using 4 mm² cable (approx. 4.6 mΩ/m), the distance from the farthest panel to the inverter should be no more than about 120 meters. Beyond that, upgrade to 6 mm² cable (approx. 3.1 mΩ/m).
Voltage Rating
Ensure the cable's rated voltage is not less than the system's maximum voltage. Common ratings of 1000 V DC / 1500 V DC meet the requirements of most residential and commercial projects.
3. Key International Standards
To ensure quality and safety, always select cables that comply with major international standards and check the markings on the cable jacket. The global PV market primarily follows these standards:
| Standard | Typical Cable Model | Key Features |
|---|---|---|
| EN 50618 (European) | H1Z2Z2-K | Low smoke zero halogen (LSZH) material; no toxic/corrosive gases in fire. |
| IEC 62930 | 62930 IEC 131 | International version similar to EN 50618; LSZH, 1500 V DC. |
| UL 4703 (North American) | PV WIRE | Emphasizes mechanical strength and abrasion resistance; ratings include 600 V, 1000 V, 2000 V DC. |
| 2PfG 1169 (German) | PV1-F | Early classic PV cable standard; still widely available. |
4. Installation and Maintenance Tips
Following robust installation practices maximizes system life:
Mechanical protection: Whether overhead or on the ground, use UV-resistant zip ties or clips to secure cables. Avoid excessive bending or mechanical stress. Do not leave cables unsupported in the air; add metal conduit if necessary.
Environmental isolation: In areas prone to rodent damage or mechanical impact, use conduit for protection.
Proper connections: Keep connectors (e.g., MC4) dry and clean. Listen for a "click" to ensure full mating; otherwise, arcing may occur, posing a fire risk.
Periodic inspection: After system operation, regularly check for cracked/sheath damage, aging, or loose/warm connectors.
Our certificates
A complete set of certificates is a reflection of our strength
packing and shipping
Wooden Drum
Every Shipping way is supported
The Solar panels cables is carefully packaged to ensure its safe transportation and delivery. Each reel or coil is securely wrapped to protect the cable from damage during transit. We also provide labeling and documentation for easy identification and handling. Our logistics team works closely with reliable shipping partners to ensure timely and efficient delivery to customers' specified locations.
Our advantage
Application: Our cables have been extensively used in municipal, electric power, water conservancy, steel, coal, petroleum, chemical, construction, subway, high-speed rail, airport, and other fields
Advanced Equipment and Reliable Technology: We employ cutting-edge equipment and reliable technology to ensure the manufacturing of superior products.
Customer Satisfaction: Our excellent management practices, along with guaranteed quality and reliable technical support, provide customers with reliable products and satisfactory services.
Extensive Market Reach: Our products have been distributed across more than 30 provinces and regions in China and exported to over 20 countries, including Russia, Spain, and the United States
FAQ
Q1: Are you a factory or trading company?
A1: We are a manufacturer.
Q2: Can I send you here to purchase samples of Solar panels cables?
A2: Yes! You are welcome to place sample order to test our superior quality and services.
Q3: What is your Warranty?
A3: All the products will have 12 months Warranty.
Q4:What payment method do you accept?
A4:T/T(Bank transfer), L/C, Western Union, Money Gram, Paypal, etc.
Q5: Can you put my brand name (logo) on these products?
A5: Yes! The professional OEM services will be welcomed to us. Our factory accepts to make the logo free for
bulk orders.
Q6: May I know the status of my order?
A6: Yes .The order information and photos at different production stage of your order will be sent to you and the information will be updated in time.
Q7: What's the leading time? (How long do you need to prepare my goods? )
A7: Delivery (no more than 1000pcs) will be arranged within 3-7 days after payment, and arrive you within about 3-7 working days via international express.
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