Solar Cable
Solar Cable & PV Cable Solutions | TUV Certified Solar Cable,
UL Listed PV Cable, CE
RoHS Solar Cable, IEC
62930 Cable
High-performance DC solar cables for reliable solar power systems, custom
sizes & wholesale available.
A solar cable (PV cable) is a specialized electrical cable designed to interconnect solar panels and connect the PV array to the inverter in a solar power system. ZMS manufactures H1Z2Z2-K and PV1-F solar DC cables rated to 1500V, with tinned copper conductors (IEC 60228 Class 5), XLPO/EVA insulation, and UV, ozone, and weather resistance. Available in 2.5mm², 4mm², 6mm² and 10mm², our solar cables are IEC 62930, EN 50618 and TÜV certified for 25+ years outdoor service.
Solar Cable Typical Types
Solar Cable H1Z2Z2-K
Solar Cables H1Z2Z2-K are suitable for PV system installations in mobile and fixed installations. Our products are certified by TUV. They comply with IEC 62930 and EN 50618 standards. They are suitable for solar power farms, rooftop solar installations, floating power plants, etc. They are highly flexible cables, especially suitable for connecting photovoltaic solar panels.
- Rated Voltage: 1000V AC, or 1500V DC
- Conductor Material: Tinned Copper
- Number of Conductors: single-core/ dual-core
- Cross Section: 1.5 mm2~95 mm2
- Outer sheath: Low smoke halogen-free (LSHF), XLPO
- The High Voltage Test: AC 6,5kV, or DC 15kV
- Working Temperature: -40℃~90℃
Max. Conductor Temperature: 120℃ - Standard: EN 50618/IEC 62930
- Certification: International TUV certification
Solar DC Cable
Solar DC cables are also known as photovoltaic cables, PV cables, etc. The structured shape is generally single-core round or two-core parallel.
Main Structure
– Conductor: The tinned copper wire soft conductor is twisted together.
– Insulation: halogen-free low smoke flame retardant irradiated cross-linked polyolefin.
– Sheath: Halogen-free, low smoke, flame retardant irradiated cross-linked polyolefin.
– Rated voltage: 1500V DC
– Wire Size: 4mm 6mm 2.5 Square
Properties
– Ozone-resistant ACC. to EN 50396 Weather and UV-resistant acc. to HD 605/Al
– Halogen-free ACC. to EN 50267-2-1, EN 60684-2
– Resistant to acid and bases ACC, to EN 60811-2-1
– Flame-resistant acc.to VDE 0482-332-1-2, DIN EN 60332-1-2, IEC 60332-1
– Very robust and abrasion-resistant sheath ACC, to DiN EN 53516
– Resistant to short-circuits up to 200’℃ thanks to their double insulation; short-circuits temperature 200℃/5 sec.
Application to Select Solar Cable
Solar Power Cables
Single Core Solar Cable
Twin Core Solar Cable
4mm² Solar Cable
6mm² Solar Cable
H1Z2Z2-K Solar Cable
Solar PV cables provide reliable DC power transmission for photovoltaic systems, connecting solar modules, inverters and other system components. They are widely used in rooftop solar projects, solar farms and industrial renewable energy installations.
Solar Extension Cable
PV Extension Cable
MC4 Extension Cable
Solar Extension Wire
Solar Panel Extension Cables are used to extend the connection between solar panels, inverters and other photovoltaic system components, providing greater installation flexibility. They are widely used in rooftop solar systems, ground-mounted solar farms and off-grid PV applications.
Solar Connector Cable
MC4 Cable Assembly
Solar Connector Cables are used to connect solar panels, inverters and combiner boxes, ensuring secure and efficient power transmission within photovoltaic systems. They are widely used in residential, commercial and utility-scale solar installations for fast and reliable system integration.
Solar Battery Cable
Solar Battery Cables are used to connect batteries, inverters and charge controllers in solar energy storage systems, ensuring safe and efficient power transmission. They are widely used in residential, commercial and off-grid photovoltaic installations.
Solar Cable Specification & Size
Solar Cable Size & Ampacity Table（mm²）
| Cross-section (mm²) | Conductor | Max Current (A) | Typical Use |
|---|---|---|---|
| 1.5 | Tinned copper Class 5 | ~30 | Small strings, short runs |
| 2.5 | Tinned copper Class 5 | ~41 | Residential string wiring |
| 4 | Tinned copper Class 5 | ~55 | Default for most residential PV |
| 6 | Tinned copper Class 5 | ~70 | Long runs, larger systems |
| 10 | Tinned copper Class 5 | ~98 | Commercial/main DC cables |
AWG to mm² Conversion
| AWG | mm² | Diameter (mm) | Max Ampacity (A) | Typical Use |
|---|---|---|---|---|
| 14 | 2.5 | 1.63 | 15–20 | Small panels, short runs |
| 12 | 4.0 | 2.05 | 20–25 | Residential string |
| 10 | 6.0 | 2.59 | 30–35 | Long runs |
| 8 | 10.0 | 3.26 | 40–50 | Main DC cable |
H1Z2Z2-K vs PV1-F
| Parameter | H1Z2Z2-K | PV1-F |
|---|---|---|
| Voltage | 1500V DC | 1000/1500V DC |
| Insulation | XLPO/EVA | XLPO/EVA |
| Conductor | Tinned copper Class 5 | Tinned copper Class 5 |
| Standard | IEC 62930 / EN 50618 | IEC 62930 / EN 50618 |
| Region | Europe (TÜV) | Global |
| Flame retardant | Yes (IEC 60332) | Yes |
Solar Cable Feature
High quality raw materials, Environmental protection PVC, High purity copper
Plastic protective cover, waterproof, fire, flame retardant, by good insulation
Highly efficient electrification through multiple cable quality tests
Solar Cable Application
Large photovoltaic power generation
Rural building photovoltaic (PV)power generation
City street light photovoltaic (PV)power generation
Photovoltaic industrial building (PV)power generation
Cooperation With ZMS
Photovoltaic Cable Project With ZMS
- DC UV solar cable 6 sq mm
- DC solar cable 25 sq mm
- CP4A (Solar combiner connector M12 )
ZMS guarantees on-time delivery and product quality with a 99.9% pass rate and offers a wide range of qualifications in its cooperation.
Solar Cable Technical Performance Requirement
- Insulation resistance conductor resistance ρ≤4.95 Ω/km at 20 ℃. sheath surface resistance ρ≥ 109Ω.cm.
- Pressure test water temperature 20 ± 5 ℃, immersion length 10M, time 1H, AC frequency voltage 8000V, maintain 5min without breakdown.
- Combustion test vertical combustion test: the distance between the upper fixed point and the beginning of carbonization ≥ 50 mm. combustion downward extension of the distance to the upper fixed point ≤ 540 mm. combustion gas corrosion test: PH value ≥ 4.3, conductivity ≤ 10μ S / mm.
- Inner layer insulation mechanical properties before the aging tensile test: tensile strength ≥ 5N/mm2, elongation at break ≥ 200%. After aging (135±2℃), tensile strength change ≤±30%, elongation at break change ≤±30%. Air bomb aging tensile test: air pressure 5.5bar (127 ℃) tensile strength change ≤ + 30%, elongation at break change ≤ + 30%. Thermal elongation test: oven temperature 250 ± 3 ℃, mechanical pressure 20N/cm2 elongation under load ≤ 100%, elongation after unloading ≤ 25%.
- Mechanical properties of the sheath before aging tensile: tensile strength ≥ 10.0N/mm2. Elongation at break ≥ 300%. After aging (85 ± 2 ℃): elongation at break ≥ 250%. Change in tensile strength ≤ ± -15%. Elongation at break change ≤ -25%.
- Weather resistance test Low-temperature bending test of sheath: -40±2℃ in the freezer, 16 hours, no cracks can be seen by visual inspection after the test. Inner layer insulation and sheath ozone resistance: ozone concentration 250-300pphm, 24h, no cracking in 180o bending part after visual inspection. Sheath weather resistance cycle: sprinkling 18min, xenon lamp drying 102min test temperature 45±5°C. Total test time of at least 500h immediately followed by 7.1 bending test at room temperature, no cracks.
- No. 2 oil (ISO1817 ) test after oil immersion compressive strength retention ≥ 60%. Oil immersion after tensile elongation retention ≥ 70%. Diameter change after oil immersion ≤ 160.
Selection of Solar PV Cable
The cables used in the low-voltage DC transmission part of the solar photovoltaic power generation system have different connection requirements for different components due to different use environments and technical requirements.
As a professional solar cable supplier, ZMS Cable believes that the overall factors to consider when selecting suitable photovoltaic cables include the cable’s insulation performance, heat and flame retardant properties, aging resistance, and wire diameter specifications.
Specific Requirements are as Follows
1. Solar modules and components between the connection cable, generally use the connection cable attached to the module junction box directly connected, the length is not enough to use a special extension cable.
Depending on the size of the module power, this type of connection cable has a cross-sectional area of 2.5 mm, 4mm, 6mm, and three other specifications.
This type of connection cable uses a double layer of insulation sheath, which has superior resistance to UV, water, ozone, acid, and salt erosion, superior all-weather capability, and wear resistance.
2. The connection cable between the battery and the inverter requires the use of UL-tested multi-strand flexible wire, connected as close as possible. Choosing short and thick cables can reduce the loss of the system, and improve efficiency and reliability.
3. The connection cable between the battery array and controller or DC junction box is also required to use UL-tested multi-stranded flexible wire with a cross-sectional area according to the maximum output current of the array.
The DC cable cross-sectional area of the named parts is determined based on the following principles.
Solar cell modules and components between the connection cable, battery, and battery connection cable, AC load connection cable, generally select a cable rated current for each cable, in the maximum continuous operating current of 1.25 times.
Connection cables between solar cell arrays and arrays, connection cables between batteries (groups), and inverters are generally selected with a cable current rating of 1.5 times the maximum continuous operating current in each cable.
The above is the recommendation of ZMS cable team personnel. If there is anything else you do not understand, you can always contact the ZMS team. We will be happy to serve you.
Solar Cable FAQ
1. What size solar cable do I need for my PV system?
For most solar PV installations, 4mm² solar cable is the standard choice due to its balance of current capacity and cost efficiency. 6mm² or 10mm² solar cables are commonly used for larger systems, longer cable runs, or projects where minimizing voltage loss is important.
The ideal cable size should be selected based on PV system capacity, operating current, installation distance, and environmental conditions. Contact our cable specialists for a customized solar cable solution for your project.
2. What voltage are solar cables rated for?
Standard solar cables are typically rated up to 1500V DC and are widely used in photovoltaic (PV) systems for connecting solar modules, inverters, and electrical equipment. The 1500V DC rating supports higher system efficiency and is commonly applied in residential, commercial, and large-scale solar projects.
3. What standard applies to solar cables?
Solar cables are generally required to comply with international standards such as IEC 62930, EN 50618, and TÜV certifications. These standards ensure the cable meets requirements for safety, durability, UV resistance, and long-term outdoor performance in photovoltaic (PV) installations.
4. Can I use normal cable for solar?
No, it is not recommended. Standard electrical cables are not designed for the demanding conditions of solar PV installations. They typically lack the UV resistance, high-temperature resistance, ozone resistance, and weather resistance required for long-term outdoor use.
Solar cables are specifically engineered for DC photovoltaic systems and are manufactured with durable insulation materials to withstand prolonged exposure to sunlight, moisture, and harsh environmental conditions. Using standard cables may reduce system reliability, shorten service life, and create potential safety risks.
For safe and reliable operation, always use solar cables compliant with IEC 62930 or EN 50618 that are rated for your PV system.
