8B&S (7.9mm²) Red Single Core Automotive Cable: Reliable Power Delivery for Demanding 12V, 24V, and 48V Systems

Engineered for High-Current Automotive and Low-Voltage Applications

The 8B&S (7.9mm²) red single core automotive cable is designed to provide consistent, low-resistance power transfer in 12V, 24V, and 48V DC systems. With a 74A current rating at 30°C (per JASO D609), this cable is well suited for high-demand circuits such as auxiliary battery charging, inverter connections, and heavy-duty lighting. Its oxygen-free plain annealed copper conductor (96 strands of 0.32mm) ensures excellent conductivity and flexibility, reducing voltage drop over longer runs.

Unlike generic automotive wire, this cable features V90HT PVC insulation rated for continuous operation up to 90°C, providing a safety margin in engine bays and under-bonnet environments. The single core construction allows for custom bundling and routing, giving installers full control over cable management in complex builds.

*Note: Typical de-rating factors apply for ambient temperature and bundling. Refer to the derating tables for accurate sizing in your specific installation.

Key Features

• 74A current capacity at 30°C (JASO D609) for reliable high-current delivery
• Oxygen-free plain annealed copper conductor (96/0.32mm stranding) for superior conductivity and flexibility
• V90HT PVC insulation rated to 90°C, resistant to oils, fuels, and abrasion
• Maximum DC voltage: 120V, suitable for 12V, 24V, and 48V systems
• RoHS compliant and manufactured to Australian and New Zealand standards
• Sold per metre for precise project quantities with minimal waste

Built for Australian Conditions

This cable is manufactured in Australia using high-purity copper and a durable PVC compound that withstands the thermal and mechanical stresses common in automotive, marine, and off-grid installations. The 5.5mm nominal outer diameter strikes a balance between current capacity and ease of routing through conduits, grommets, and tight spaces. Whether you're wiring a dual-battery system in a 4WD, connecting a solar regulator to an auxiliary battery, or powering a high-output light bar, this cable delivers the performance and longevity expected in professional installations.

Applications

• Auxiliary battery and dual-battery systems in 4WDs, caravans, and campers
• High-current connections for inverters, DC-DC chargers, and solar regulators
• Heavy-duty lighting circuits, including light bars and driving lights
• Marine wiring for bilge pumps, windlasses, and navigation equipment
• General low-voltage wiring in off-grid solar setups and remote power systems

Why Choose This Cable Over Generic Alternatives?

Many budget cables use copper-clad aluminium (CCA) or lower-grade copper with thicker, less durable insulation. This product uses oxygen-free plain annealed copper for maximum conductivity and corrosion resistance, and V90HT PVC that resists hardening and cracking under heat and vibration. The result is a safer, more efficient installation with reduced risk of voltage drop, overheating, and premature failure—critical in mobile and remote applications where reliability is non-negotiable.

Get the Right Cable for Your Next Project

Order the 8B&S (7.9mm²) red single core automotive cable by the metre today and ensure your 12V, 24V, or 48V system has the dependable power delivery it needs. For larger projects, explore our full range of gauges and colours to complete your wiring loom with confidence.