Solar Panel Extension Cable Pair 4mm²/6mm² MC4 Connectors 2–10M

Solar Panel Extension Cable with MC4 Connectors – Red & Black Pair

Extend your photovoltaic system with confidence using this heavy-duty solar panel extension cable pair. Each set includes one red (positive) and one black (negative) cable, pre-fitted with waterproof male and female MC4-compatible connectors — making installation quick, safe, and professional. Available in 4mm² (12 AWG) or 6mm² (10 AWG) conductor sizes and lengths from 2 to 10 metres, these cables are engineered for both grid-connected and off-grid solar systems.

Made in Mainland China.

Why Choose These Solar Extension Cables?

• High-Conductivity Tinned Copper: Solid tinned conductors ensure minimal resistance and maximum energy transfer from your solar panels to your charge controller or inverter.
• UV & Weather Resistant: PVC-insulated with a PP connector shell rated for environments from -45°C to +85°C, offering excellent anti-aging and UV resistance for years of outdoor use.
• Waterproof Connectors: Pre-fitted male and female waterproof connectors provide a secure, IP-rated connection that keeps moisture and dust out — ideal for rooftop, ground-mount, or underground solar installations.
• Certified Safe: CE, RoHS, and UL certified — meeting international safety and environmental standards for photovoltaic wiring.
• Flexible Length Options: Choose from 2M, 3M, 5M, 6M, or 10M to suit any installation layout without unnecessary cable waste or costly custom wiring.
• No High-Concern Chemicals: RoHS-compliant construction means no hazardous substances in the cable materials.

Technical Specifications

What's in the Box?

• 1 x Red Solar Extension Cable (Positive) with Male & Female Connectors
• 1 x Black Solar Extension Cable (Negative) with Male & Female Connectors

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Learn More About Solar Energy Safety

For guidance on safe solar panel wiring standards and photovoltaic system installation requirements, visit the U.S. Department of Energy – Homeowner's Guide to Going Solar.

Frequently Asked Questions

Q: What is the difference between the 4mm² and 6mm² solar extension cable options?

A: The 4mm² (12 AWG) cable has a rated current of 32A and suits most residential solar panel setups. The 6mm² (10 AWG) cable supports up to 50A and is better suited for larger systems or longer cable runs where minimizing voltage drop is critical. Choose based on your system's current rating and total cable length.

Q: Are these cables suitable for underground solar installations?

A: Yes. These solar extension cables are rated for underground application and feature PVC insulation with a temperature range of -45°C to +85°C, making them suitable for burial in conduit or direct-underground use in photovoltaic installations.

Q: Are the MC4-style connectors on this cable waterproof?

A: Yes. The pre-fitted male and female connectors are waterproof and made from UV-resistant PP insulation material, designed to withstand outdoor exposure including rain, dust, and direct sunlight — perfect for rooftop and ground-mounted solar systems.

Q: Can I use this cable for both grid-tied and off-grid solar systems?

A: Absolutely. This solar panel extension cable kit is designed specifically for professional solar panel installation and is compatible with both grid-connected (on-grid) and off-grid photovoltaic systems, as well as solar kits and portable solar chargers.