Solar extension cable 2m 6mm² - red/black for reliable PV applications (set)

The Solar extension cable set (2 metres, 6mm²) is the compact, high-performance solution for photovoltaic projects where maximum efficiency is required in the tightest of spaces. If you only need to bridge short distances – for example, between closely spaced modules or directly to the micro inverter of a balcony power station – this large cross-section ensures that not a single watt of power is lost, even at peak currents.

The set contains two high-quality, double-insulated solar cables: a red cable for the positive pole (+) and a black cable for the negative pole (–). Both ends are professionally pre-assembled with MC4-compatible plugs and sockets. Thanks to the generous cross-section of 6mm², this set is extremely future-proof and ideal for modern high-performance modules with very high output currents.

Highlights at a glance

• Maximum efficiency: The cross-section of 6mm² minimises electrical resistance to an absolute minimum, which is especially advantageous for high currents.
• Plug & Play installation: The cables are pre-assembled on both sides with MC4-compatible connectors, so no special crimping tool is required.
• Secure identification: The clear colour coding in red (+) and black (–) effectively prevents incorrect polarity when connecting.
• Weatherproof & durable: The special jacket made from cross-linked polyolefin is UV-resistant, ozone-resistant and withstands extreme temperatures from -40°C to +90°C.
• Protection rating IP67: When mated, the connectors are absolutely dust-tight and protected against splash water and rain.
• High-quality conductor: Tinned electrolytic copper ensures excellent corrosion resistance and long-lasting high conductivity.

Areas of application

This 2-metre extension is optimised for specific close-range scenarios:

• Module connection (string)
  • Bridging short distances between two solar modules where the factory cables are just a little too short for the chosen mounting position.
• Balcony power stations
  • Direct connection from the module to the micro inverter if it is mounted directly behind the panel on the mounting frame.
• Compact stand-alone systems
  • Connecting small charge controllers in motorhomes or boats where components are installed in confined spaces.

Assembly & safety instructions

• No measurable voltage drop
  • At a length of just 2 metres, the voltage loss is practically zero, even with 12V systems. This makes the cable the perfect choice for perfectionists who want to utilise every bit of energy.
• Observe bending radii
  • Despite the high flexibility of the fine-stranded conductors, you should not bend the 6mm² cable too sharply in order not to mechanically stress the insulation and connectors.
• Correct latching
  • When connecting, make sure that the MC4 connectors audibly engage. Only then is the connection permanently waterproof and safe against arcing.

Features

FAQs about the solar extension cable 2m 6mm²

Isn’t 6mm² oversized for a length of just 2 metres?

Technically yes, but it offers reserves. While 4mm² is usually sufficient for this length, 6mm² offers higher mechanical robustness and is already perfectly equipped for future module generations with currents above 15A.

Does the cable fit my inverter from Hoymiles or Deye?

Yes. The connectors used comply with the MC4 standard, which is used worldwide for almost all solar modules and micro inverters. They fit mechanically and electrically perfectly.

Can I connect two of these 2m cables end to end?