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  • A: Cable size depends onsystem currentandcable length, with voltage drop kept below 3%.

    • 2.5mm² (14AWG): short inter-panel connections, ~30A;

    • 4mm² (12AWG): most common for residential PV, ~55A, suitable for systems ≤6kW and runs ≤10m;
    • 6mm² (10AWG): for higher-power systems or longer runs, ~70A, lower voltage drop;
    • 10mm²+: commercial plants, inverter-to-combiner box trunk lines.
    Yongshang solar cables are available in 2.5 / 4 / 6 / 10 / 16 / 25 mm², custom sizes supported.


  • A: Yongshang solar photovoltaic cables hold multiple international certifications:

    • TÜV 2Pfg 1169: German TÜV certification, widely accepted in the EU, the core PV cable certification;
    • CE: EU mandatory conformity marking;
    • IEC 62930 / EN 50618: international PV cable standards;
    • CCC: China compulsory certification;
    • RoHS: EU restriction of hazardous substances.

    Market guidance: EU → TÜV+CE; USA → UL 4703 (customizable); Australia → AS/NZS 5033; SE Asia/Middle East → TÜV+IEC generally accepted. Please tell us your target market before ordering so we can match the right certification.

  • A: Yongshang solar photovoltaic cables use adouble-insulation structuredesigned for harsh outdoor PV environments:
    • Conductor: 99.99% oxygen-free tinned copper, multi-strand flexible, tin plating for anti-oxidation and corrosion resistance;
    • Insulation: XLPE / XLPO (cross-linked polyolefin), high temperature and voltage resistant;
    • Sheath: XLPO,UV-resistant, ozone-resistant, acid/alkali/salt resistant, flame retardant;
    • Voltage rating: AC 0.6/1kV, DC 1.8kV;
    • Temperature range: -40°C ~ +90°C (short-term up to +120°C).
    Regular PVC cables have single-layer insulation, no UV or high-temperature resistance, and will crack after 1-2 years outdoors. Theymust never replace solar cablefor DC inter-panel connections.
  • A: Yongshang solar photovoltaic cables have a design life of 25 years under normal operating conditions -40°C +90°C, matching the lifespan of PV modules — no mid-term replacement needed.
    Electron-beam cross-linking technology significantly enhances heat, weather and mechanical resistance;
    Passes damp heat test (EN 60068-2-78), ozone resistance test (EN 50396), cold bend test and more;
    5-year product warranty— free replacement or refund for material or manufacturing defects within the warranty period;

    Factory inspection report (COC), material certificate (MS) and certification copies are provided for customs clearance and project acceptance.


  • A: Yongshang solar photovoltaic cables offer excellent weather and water resistance with IP67 protection (when used with MC4 connectors), suitable for:
    • Exposed rooftop installation: fully UV, temperature and rain resistant — the most common application;
    • Conduit burial: recommended to run through PVC/galvanized conduit for protection against mechanical damage and rodents;
    • Coastal/humid areas: tinned copper conductor + XLPO sheath resist salt spray corrosion;
    • Desert/cold regions: remains flexible down to -40°C without cracking.
    Important notes:
    1. Avoid friction against sharp metal roof edges — use weather-resistant clips, do not over-tighten cable ties;
    2. Use red (+) and black (-) for DC polarity to ease maintenance;
    3. Certified MC4 connectors are recommended for waterproof and reliable connections.

  • A: Apart from UV ageing, sand‑dust abrasion, extreme thermal cycling and high ambient temperature are major hidden risks. Fine sand particles continuously scour the outer sheath and gradually cut the jacket under long‑term wind‑blown sand conditions. Day‑night huge temperature swings cause repeated thermal expansion and contraction on insulation and terminals, generating hot‑spots at crimping points. You shall select e‑beam cross‑linked PV cables, avoid tight bundling for heat dissipation, and regularly check sheath micro‑cracks and terminal temperature rise during annual shutdown inspection.

  • A: Nuclear‑grade control cables demand strict termination cleanliness to avoid partial‑discharge risks. High‑humidity and heavy‑rain tropical onsite conditions easily bring moisture and dust into stripped‑insulation interfaces even under short open‑air operation. Avoid terminating under direct rain‑wet conditions, use temporary weather shelters and keep the stripping surface contamination‑free. Strictly follow cable‑manufacturer stress‑control procedures; do not substitute with generic heat‑shrink accessories, and record termination environmental parameters in project files.

  • A: Ordinary PVC‑sheathed cables suffer fast attack from termites and acidic‑alkaline tropical soil. Even if cables pass factory anti‑termite testing, local soil chemical composition varies greatly across different project zones. For direct‑buried routes, adopt anti‑termite armoured structure or add extra protective conduit layer rather than fully relying on cable‑jacket material. Conduct soil‑sample analysis before installation, set up periodic partial‑discharge and sheath‑integrity testing cycles, and replace segments with irreversible sheath erosion.

  • A: Many hot spot failures do not root in cable conductor itself but originate from improper installation details. Over tight cable bundling blocks natural heat dissipation under high surrounding temperature; insufficient bending radius builds internal insulation stress over long term thermal cycling. Mixed use of mismatched third party MC4 connectors creates unstable contact resistance. Keep proper spacing between DC cable bundles, respect minimum bending radius, and use matched certified connector sets, and carry out infrared thermal imaging scanning on connection points in routine maintenance.

  • A: Nuclear‑qualified cables face combined stresses including gamma‑radiation, high‑temperature ageing and possible LOCA‑simulated condition impacts. Routine visual check cannot judge internal insulation degradation status only from outer‑jacket appearance. Perform scheduled dielectric‑loss and insulation‑resistance trending tests rather than only spot‑check values. Track operation‑time cumulative radiation dose records, compare against cable‑qualified‑specification limits, and arrange replacement when trending parameters approach threshold even without obvious external damage.

  • A: Aluminium‑alloy conductor features higher thermal expansion coefficient compared with copper. Repeated heating‑cooling cycles under large day‑night temperature swings will gradually relax crimp‑joint contact pressure if non‑specialised aluminium‑alloy lugs are applied. Do not use standard copper lugs for aluminium‑alloy cable termination. Re‑torque compression terminals according to manufacturer‑specified torque values in the first‑year cyclic maintenance, and monitor joint temperature rise by infrared inspection to avoid oxidation‑caused contact deterioration.

  • A: Coastal salt‑spray atmosphere accelerates galvanic corrosion on bare metal parts of cable‑termination assemblies. Even if cable sheath is intact, imperfect sealing at cable glands and junction boxes allows salt‑mist to penetrate inside and erode conductor and shielding‑layer. Ensure full IP‑rated sealing for gland and box‑interfaces; avoid exposing stripped‑conductor segments to salt‑laden air. During maintenance, inspect sealing‑gasket ageing status, test shield‑layer continuity, and clean salt‑deposit on termination hardware periodically.