Automotive Cable By the Metre

Custom-Length Automotive Cable By the Metre

When wiring a 12V or 24V system in your caravan, RV, 4WD, or boat, buying the exact length of cable you need is both cost-effective and practical. Our range of automotive cable by the metre allows you to order precise lengths for your off-grid electrical projects, eliminating offcuts and excess waste. Designed to withstand the rigorous vibrations, temperature fluctuations, and demanding conditions of Australian travel, these cables provide reliable power transfer for lighting, fridges, monitoring systems, and minor accessories.

Why Choose Automotive Cable for Mobile Systems?

Standard electrical cables are not built to handle the constant movement and harsh environments experienced on corrugated outback tracks or marine environments. Automotive cables feature stranded copper conductors that provide superior flexibility and resilience.

• Vibration Resistance: Highly flexible stranded copper core prevents work-hardening and breakage in mobile applications.
• Durable Insulation: Thick PVC sheathing protects against abrasion, heat, and automotive fluids.
• Precise Lengths: Sold per metre, allowing you to tailor your order perfectly to your custom 4WD canopy or tiny home layout.
• Clear Identification: Available in industry-standard red and black for single core, and clearly marked twin core options to keep your circuits organised.

Single Core vs Twin Core Automotive Cables

Selecting the right cable format is essential for a tidy and safe installation. Single core automotive cable is typically used for heavy-duty battery connections, earthing to a chassis, or when routing positive and negative paths separately. We offer robust single core sizes from 8B&S up to 2B&S in both red and black. Twin core automotive cable houses both the positive and negative wires within an additional outer protective sheath. This makes it ideal for running power to appliances, lights, or switches over longer distances where extra physical protection is highly beneficial.

How to choose guidance that compares shopper needs, specifications, and purchase criteria

Selecting the correct cable size is the most critical step in designing an efficient off-grid power system. Using undersized cables leads to unacceptable voltage drop, poor appliance performance, and potential fire hazards.

Understand Sizing Metrics: Automotive cables are often rated in B&S (Brown and Sharpe / AWG) or mm (auto industry standard) and mm² (cross-sectional area). Always base your electrical calculations on the mm² cross-sectional area to ensure accurate current carrying capacity.

Match Cable to Current (Amps): For low-draw accessories like LED lights or basic monitoring displays, a 3mm (1.13mm²) or 4mm (1.84mm²) twin core cable is usually sufficient. For heavier loads like 12V fridges, 6mm (4.59mm²) or 8B&S (7.9mm²) twin core is highly recommended to minimise voltage drop over the run length. High-current connections, such as battery to fuse boxes or small inverters, demand heavy-duty 6B&S, 4B&S, or 2B&S single core cables.

Calculate Voltage Drop: Measure the total round-trip distance (positive and negative) from your power source to the appliance. Ensure your chosen cable size maintains a voltage drop of less than 3% for sensitive electronics.

Complete Your Electrical Installation

As a proudly Australian family business with a decade of experience, we provide high quality products backed by dedicated before and after support. Once you have measured your required lengths of automotive cable, ensure you have the right accessories to finish the job securely. Protect your new wiring runs with durable split tube conduit, and terminate your connections safely using the correct cable lugs. If you are taking on a larger project, consider purchasing automotive cable by the roll for better bulk value. Order your custom-length automotive cable today and benefit from our fast dispatch to keep your 4WD, RV, or caravan build moving forward.