{"product_id":"4bs-red-single-core-automotive-cable-per-metre","title":"KEY - 4B\u0026S (20.29mm²) Red Single Core Automotive Cable - Australian Made - Per Metre","description":"\u003ch2\u003e4B\u0026amp;S (20.29mm²) Red Single Core Automotive Cable: High-Current Power Delivery for Demanding Vehicle Systems\u003c\/h2\u003e\n\u003ch3\u003eEngineered for Reliable 12V, 24V, and 48V Automotive and Marine Applications\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e4B\u0026amp;S (20.29mm²) red single core automotive cable\u003c\/strong\u003e is purpose-built to handle high-current loads in vehicle electrical systems, from starter motor circuits to auxiliary battery banks and high-power accessories. With a \u003cstrong\u003e135A amp rating at 30°C\u003c\/strong\u003e (derating factors apply), this cable provides a robust pathway for power where standard wiring falls short. Its \u003cstrong\u003eoxygen-free copper conductor\u003c\/strong\u003e and \u003cstrong\u003e90°C rated PVC insulation\u003c\/strong\u003e ensure consistent performance under the bonnet, in chassis runs, or within marine environments.\u003c\/p\u003e\n\u003cp\u003eUnlike generic automotive wire, this cable uses fine-stranded copper for superior flexibility and vibration resistance, reducing the risk of fatigue failure in mobile installations. The thick insulation wall resists abrasion, oil, and fuel, making it suitable for engine bays and exposed underbody routing. Whether you're wiring a dual-battery system, a high-output alternator, or a large inverter, this cable delivers the current capacity and durability required.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e135A current rating at 30°C\u003c\/strong\u003e — supports high-demand circuits with minimal voltage drop\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20.29mm² cross-sectional area\u003c\/strong\u003e — equivalent to 4B\u0026amp;S gauge, ideal for long cable runs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOxygen-free copper conductor\u003c\/strong\u003e — maximises conductivity and resists corrosion\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFine-stranded construction\u003c\/strong\u003e — enhances flexibility for easier routing in tight spaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e90°C PVC insulation\u003c\/strong\u003e — withstands engine bay heat and resists common automotive fluids\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated to 120V DC maximum\u003c\/strong\u003e — suitable for 12V, 24V, and 48V systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoHS compliant\u003c\/strong\u003e — meets Australian and New Zealand safety standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Cable Quality Matters in High-Current Circuits\u003c\/h3\u003e\n\u003cp\u003eInadequate cabling is a common cause of voltage drop, overheating, and unreliable system performance. This 4B\u0026amp;S cable uses high-purity copper with a low electrical resistance of \u003cstrong\u003e0.9 ohm\/km at 20°C\u003c\/strong\u003e, minimising energy loss across the conductor. The result is more efficient power transfer to your starter motor, winch, or auxiliary battery, and reduced heat buildup that can degrade insulation over time.\u003c\/p\u003e\n\u003cp\u003eFor installations where multiple cables are bundled or ambient temperatures exceed 30°C, derating is essential. *Note typical derating factors apply: for example, two cables bundled together require a 0.8 multiplier, reducing the effective ampacity to 108A. Always consult a professional installer to ensure compliance with system design and safety requirements.\u003c\/p\u003e\n\u003ch3\u003eApplications Beyond Standard Automotive Wiring\u003c\/h3\u003e\n\u003cp\u003eWhile optimised for automotive battery and starter circuits, this cable excels in a range of high-power 12V, 24V, and 48V applications:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDual-battery systems in 4WDs, caravans, and camper trailers\u003c\/li\u003e\n\u003cli\u003eHigh-output alternator and starter motor upgrades\u003c\/li\u003e\n\u003cli\u003eDC-DC charger and solar charge controller connections\u003c\/li\u003e\n\u003cli\u003eLarge inverter installations (up to 120V DC)\u003c\/li\u003e\n\u003cli\u003eMarine electrical systems requiring tinned copper alternatives (note: this is bare copper; consider tinned for direct saltwater exposure)\u003c\/li\u003e\n\u003cli\u003eGeneral high-current wiring in trucks, buses, and agricultural machinery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBuilt for Australian Conditions\u003c\/h3\u003e\n\u003cp\u003eManufactured to stringent standards, this cable is designed to cope with the vibration, temperature extremes, and under-bonnet conditions typical of Australian vehicles. The robust PVC jacket provides excellent resistance to abrasion, oil, and fuel, while the fine-stranded copper core withstands repeated flexing without work-hardening and cracking.\u003c\/p\u003e\n\u003cp\u003eSelecting the correct cable gauge is critical for safety and performance. The 4B\u0026amp;S size offers a practical balance between current capacity and physical dimensions (8.3mm O.D.), fitting through standard grommets and conduit while supporting loads up to 135A. For even higher currents, consider stepping up to 2B\u0026amp;S or larger.\u003c\/p\u003e\n\u003ch3\u003eOrder Your 4B\u0026amp;S Red Automotive Cable Today\u003c\/h3\u003e\n\u003cp\u003eUpgrade your vehicle's electrical system with a cable that delivers dependable high-current performance. \u003cstrong\u003eAdd the 4B\u0026amp;S (20.29mm²) red single core automotive cable to your cart now\u003c\/strong\u003e and power your next adventure with confidence.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable class=\"product-specifications\" style=\"width:100%; border-collapse:collapse; border:1px solid #d9d9d9; table-layout:auto;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eCode\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003eABC111203\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eNearest B \u0026amp; S\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eNZ Equiv.\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003e158\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eStrand No. \/ Size\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003e96\/0.32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eNominal Area (mm²)\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003e7.71\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003e**AMP Rating at 30°C\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003e74\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eInsulation Thickness (mm)\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003e0.9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eElectrical Resistance at 20°C (ohm\/km)\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003e2.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eNominal O.D. (mm)\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003e5.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eMass (kg\/100m)\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003e9.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"KEY","offers":[{"title":"Default Title","offer_id":52364094243099,"sku":"Key-KABC1287030-RD","price":11.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0854\/3354\/9083\/files\/Key-KABC1287030-RD-01.jpg?v=1781609469","url":"https:\/\/www.nbcampingequipment.com.au\/products\/4bs-red-single-core-automotive-cable-per-metre","provider":"NB Camping Equipment","version":"1.0","type":"link"}