100m Roll of KEY 8B&S (7.9mm²) Red Single Core Automotive Cable

KEY 8B&S (7.9mm²) Red Single Core Automotive Cable — 100m Roll for Reliable 12V, 24V, and 48V DC Power Distribution

High-Performance Single Core Cable for Automotive, Marine, and Off-Grid Applications

This 100-metre roll of KEY 8B&S (7.9mm²) red single core automotive cable is engineered for demanding low-voltage DC installations where consistent current delivery and long-term durability are critical. With a 74A current rating at 30°C (per JASO D609), it is an excellent choice for auxiliary battery charging, solar panel connections, and high-current accessory wiring in vehicles, caravans, boats, and fixed off-grid systems.

Unlike generic automotive cable that may use lower-grade copper or thinner insulation, this cable features plain annealed copper conductors for superior conductivity and V90HT high-temperature PVC insulation rated to 90°C. This combination reduces voltage drop, resists heat build-up, and maintains flexibility even in harsh engine bay or outdoor environments. The cable is suitable for 12V, 24V, and 48V systems with a maximum DC voltage rating of 120V, making it versatile across a wide range of mobile and stationary applications.

*Note typical de-rating factors apply for ambient temperature and bundling; refer to the specification table for guidance.

About KEY Tubing & Electrical

KEY Tubing & Electrical (KTE) is an Australian-owned manufacturer with over 60 years of industry experience supplying electrical, cable, tubing, and custom-engineered solutions to industries across Australia and around the world. Based in South Australia, KEY is known for its commitment to quality manufacturing, rigorous quality standards, and reliable products designed for demanding automotive, electrical, industrial, and resource sector applications. KEY continues to support Australian industry with a strong focus on performance, durability, and dependable engineering.

Key Features

• 74A current rating at 30°C — supports high-demand circuits such as inverters, DC-DC chargers, and auxiliary battery banks
• Plain annealed copper conductors — 96 strands of 0.32mm for excellent flexibility and low electrical resistance (2.4 Ω/km at 20°C)
• V90HT high-temperature insulation — withstands up to 90°C, reducing risk of melting or degradation in hot engine compartments
• 100-metre bulk roll — ideal for large installations, workshops, or multiple projects, minimising waste and cost per metre
• Red colour coding — simplifies polarity identification and complies with common wiring standards for positive DC circuits
• RoHS compliant — meets Australian and New Zealand safety standards for peace of mind

Engineered for Australian Conditions

This cable is manufactured to handle the rigours of Australian environments, from corrugated outback tracks to salt-laden coastal air. The oxygen-free copper stranding resists corrosion and maintains low resistance over time, while the robust PVC jacket protects against abrasion, moisture, and common automotive fluids. Whether you're wiring a dual-battery system in a 4WD, running power to a caravan fridge, or connecting solar panels on a remote shed, this cable delivers dependable performance.

Applications

• Auxiliary battery and dual-battery systems in 4WDs, trucks, and SUVs
• Solar panel to charge controller wiring for caravans, motorhomes, and off-grid cabins
• High-current accessory circuits: winches, air compressors, inverters, and lighting
• Marine DC wiring for boats and yachts (when installed in protected conduit)
• General low-voltage power distribution in trailers, camper trailers, and workshops

Why This Cable Outperforms Generic Alternatives

Many budget cables use copper-clad aluminium (CCA) or lower strand counts, leading to higher resistance, greater voltage drop, and potential hot spots under load. This 8B&S cable uses 96 strands of 0.32mm plain copper, providing a true 7.9mm² cross-sectional area and a resistance of just 2.4 Ω/km. The result is cooler operation, less energy wasted as heat, and longer service life for connected equipment. The V90HT insulation further reduces fire risk in high-temperature areas, a critical consideration for under-bonnet wiring.

Installation Notes

For optimal performance, select the appropriate cable gauge based on your total circuit length and expected current draw. Always consult a qualified auto electrician for complex installations, and use appropriate fusing or circuit protection. When bundling multiple single core cables, apply the de-rating factors provided in the specifications to ensure safe operating temperatures.

Power Your Project with Confidence

Equip your vehicle, vessel, or off-grid system with a cable that prioritises safety, efficiency, and longevity. Add the 100m roll of KEY 8B&S red single core automotive cable to your order today and build a wiring harness you can rely on for years to come.