Solar panel cable MC4 connector 4mm square solar extension cable with single-core tinned copper wire and low-smoke halogen-free insulation available in black or red for new energy solar systems with lengths from 1 metre to 10 metres
MC4 solar panel extension cable with 4mm² cross-section for photovoltaic system connections in 1-10 metre lengths

This photovoltaic extension cable provides a practical solution for connecting solar panels and system components in new energy installations. Designed with MC4 connectors that are compatible with standard solar equipment, the cable enables secure electrical connections between photovoltaic modules, charge controllers, and inverters. The single-core construction with tinned copper wire ensures efficient power transfer, while the low-smoke halogen-free insulation meets safety standards for both residential and commercial solar applications. Available in five standard lengths and two colour options, this cable accommodates various installation layouts and spacing requirements in solar energy systems.
Features and Construction

The solar extension cable combines practical photovoltaic connectivity with safety-focused materials suitable for outdoor solar applications. With its specific design parameters and range of available options, this cable addresses the need for reliable interconnections between solar system components.
Material and Build
Constructed with a tinned copper wire core, this cable provides efficient electrical conductivity while offering some corrosion resistance for outdoor photovoltaic applications. The low-smoke halogen-free insulation material meets safety standards by minimising toxic fume emissions in the event of electrical issues. This insulation choice makes the cable suitable for new energy applications where fire safety and environmental considerations are important factors in material selection.
Size and Practical Fit
With a nominal cross-section of 4mm², this solar cable is designed to handle the electrical current typical in many photovoltaic systems. The cable is available in five practical lengths—1 metre, 2 metres, 3 metres, 5 metres, and 10 metres—allowing installers to select the appropriate size for their specific layout requirements. The maximum outer diameter ranges from 2.5mm to 6mm, providing a compact profile that facilitates neat cable management in solar installations.
Uses and Placement

This extension cable serves multiple functions within photovoltaic systems, from connecting individual solar panels to linking system components. Its design parameters make it suitable for various solar energy applications where reliable, safe electrical connections are required.
Event or Professional Use
For professional solar installations, this cable provides a standardised connection solution between photovoltaic modules and system components. The MC4 connectors ensure compatibility with most modern solar panels, while the range of lengths allows installers to bridge gaps between panels mounted at varying distances. The colour options—black and red—enable clear identification of positive and negative connections in complex solar arrays, aiding in proper system wiring and maintenance.
Everyday Home Use
For residential solar systems, this extension cable offers homeowners a reliable way to connect rooftop panels to inverters or to extend existing connections when expanding their photovoltaic setup. The available lengths accommodate different roof layouts and mounting configurations, while the safety-focused insulation material provides peace of mind for household electrical applications. The standardised MC4 connectors ensure compatibility with most residential solar equipment without requiring specialised adapters.
Benefits and Buying Value

This solar extension cable delivers practical advantages for photovoltaic system installation and maintenance through its standardised design and safety features. The product's value lies in its compatibility, safety compliance, and flexibility for various solar applications.
Reuse and Low Maintenance
The cable's durable construction with tinned copper wire and halogen-free insulation supports repeated use in different solar configurations. The standardised MC4 connectors allow the cable to be repurposed between different solar projects or system upgrades, while the colour coding facilitates proper connection identification during maintenance or reconfiguration. The materials selected are designed to withstand outdoor conditions typical of solar installations.
Why Choose This Product
This solar extension cable provides a practical solution for photovoltaic system connections with its 4mm² cross-section designed for efficient power transfer. The five length options from 1 metre to 10 metres offer flexibility for various installation layouts, while the low-smoke halogen-free insulation meets important safety standards for electrical applications. The inclusion of MC4 connectors ensures compatibility with standard solar equipment, reducing the need for additional adapters or modifications during installation.
