Marine Cable By the Metre

Premium Tinned Marine Cable Cut to Length

When wiring a boat, houseboat, or coastal off-grid electrical system, using the right conductor is crucial for long-term safety and performance. Our range of tinned marine cable by the metre allows you to order the exact length required for your project, minimising waste while ensuring your installation is built to withstand harsh Australian conditions. Unlike standard automotive wire, marine-grade cables are specifically manufactured to resist moisture, salt spray, and extreme vibration.

Why Tinned Copper is Essential for Boats and Coastal Setups

The core difference between standard DC wiring and marine cables lies in the tinning process. Each individual copper strand is coated in a thin layer of tin before being bundled and insulated. This highly effective coating prevents the copper from oxidising or turning black when exposed to high humidity and salty air. Without this protection, untreated copper can corrode inside the insulation, increasing electrical resistance, causing severe voltage drop, and eventually creating dangerous heat build-up. For marine environments, 4WD canopies, and tropical off-grid systems, tinned copper is the standard for ultra durable and reliable power delivery.

Available Core Types and Sizes

We supply common sizing for heavy-duty DC power distribution, ensuring you have the right wire for battery banks, winches, inverters, and switchboards. Our current cut-to-length selection includes:

• Single Core (e.g., 2B&S / 32mm²): Ideal for heavy-duty positive and negative links between batteries, high-power inverter connections, and starter motors. Available in distinct red or black sheathing for safe circuit identification.
• Twin Core (e.g., 6B&S / 13.5mm² and 8B&S / 7.7mm²): Features two heavily insulated conductors encased in a robust outer sheath. Excellent for running power to distribution blocks, switch panels, solar controllers, and heavier DC loads without running individual wires.
• High-Temperature Insulation: The robust outer sheathing is designed to resist oil, acid, and UV exposure while remaining flexible enough to route through tight hull spaces or vehicle bulkheads.

Plan Your Installation Accurately

Purchasing by the metre gives you complete control over your system design. However, correctly sizing your conductors is vital to prevent excessive voltage drop, which can severely impact the performance of 12V and 24V equipment. When running long lengths from a battery to a bow thruster, anchor winch, or fridge, you must calculate the total round-trip distance. If you are unsure which gauge you require for a specific current draw, refer to our Ultimate DC Cable Sizing Calculator or read our detailed guide on Choosing the Right Cable Type.

Common Use Cases for Tinned Marine Cable

Our heavy-duty tinned wires are highly versatile and regularly selected for:

Marine Battery Banks and Inverters: Upgrading house batteries or installing a new pure sine wave inverter requires heavy single-core 2B&S wire to handle high surge currents safely.

Boat Switch Panels and Auxiliaries: Running 8B&S or 6B&S twin core from your main distribution board to secondary fuse blocks or high-draw appliances like travel ovens and refrigeration.

4WD Canopies and RVs: While typically used on the water, the extreme corrosion resistance of tinned wire makes it a premium upgrade for off-road vehicles frequently crossing rivers or touring coastal tracks.

Solar Upgrades: Terminating connections between high-capacity MPPT solar charge controllers and lithium battery banks.

Do not forget to protect your new circuits with appropriate fuses and fuse holders, and finish your terminations securely with high-quality cable lugs. As an Australian family business with a decade of experience, we pride ourselves on providing high quality products alongside comprehensive before and after support. Order your precise lengths of marine cable today and enjoy fast dispatch directly to your door.