Solar extension cable 1m 6mm² - red/black for reliable PV applications (set)

The Solar extension cable set (1 metre, 6mm²) is the compact high-performance solution for photovoltaic projects where maximum efficiency is required in the smallest of spaces. If you only need to bridge short distances – for example, between closely spaced modules or directly to the microinverter of a balcony power station – this large cross-section ensures there is no loss of power, even at peak currents.

The set contains two high-quality, double-insulated solar cables: one red cable for the positive terminal (+) and one black cable for the negative terminal (–). Both ends are professionally pre-assembled with MC4-compatible connectors 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 6mm² cross-section minimises electrical resistance to an absolute minimum, which is especially beneficial for high currents.
• Plug & Play installation: The cables are factory-fitted on both sides with MC4-compatible plugs, so no special crimping tools are required.
• Secure identification: The clear colour coding in red (+) and black (–) effectively prevents a polarity reversal when connecting.
• Weatherproof & Durable: The special sheath made from cross-linked polyolefin is UV-resistant, ozone-resistant, and can withstand extremely low and high temperatures from –40°C to +90°C.
• Protection class IP67: When mated, the connectors are absolutely dust-tight and protected against splashing water and rain.
• High-quality conductor: Tinned electrolytic copper provides excellent corrosion resistance and permanently high conductivity.

Areas of application

This 1-metre extension is optimised for specific short-range scenarios:

• Module connection (string)
  • Bridging short distances between two solar modules if the factory-installed cables are just too short for the selected mounting position.
• Balcony power stations
  • Direct connection from the module to the microinverter if the latter is attached directly behind the panel on the mounting frame.
• Compact stand-alone systems
  • Connecting small charge controllers in camper vans or boats, where the components are installed in confined spaces.

Assembly & safety information

• No measurable voltage drop
  • At a length of only 1 metre, the voltage loss is practically zero, even in 12V systems. This makes the cable the ideal choice for perfectionists who want to make use of every last bit of energy.
• Observe bend radius
  • Despite the high flexibility of the finely stranded conductors, you should not bend the 6mm² cable too sharply, to avoid mechanically stressing the insulation and the connectors.
• Correct latching
  • When connecting, make sure the MC4 connectors clearly click into place. This is the only way to ensure the connection is permanently waterproof and safe from arcing.

Features

FAQs on the solar extension cable 1m

Isn't 6mm² oversized for just 1 metre in length?

Technically yes, but it never hurts. While 4mm² is usually sufficient at this length, 6mm² offers greater mechanical robustness and is already ideal for future module generations with currents above 15A.

Will this cable fit my inverter from Hoymiles or Deye?

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

Can I connect two of these 1m cables in series?