{"product_id":"4bs-black-single-core-automotive-cable-per-metre","title":"KEY - 4B\u0026S (20.29mm²) Black Single Core Automotive Cable - Australian Made - Per Metre","description":"\u003ch2\u003e4B\u0026amp;S (20.29mm²) Black Single Core Automotive Cable: High-Current Conductor for 12V, 24V, and 48V Systems\u003c\/h2\u003e\n\u003ch3\u003eEngineered for Demanding Automotive and Off-Grid Power Applications\u003c\/h3\u003e\n\u003cp\u003eThis \u003cstrong\u003e4B\u0026amp;S (20.29mm²) black single core automotive cable\u003c\/strong\u003e is designed to deliver reliable, high-current power in \u003cstrong\u003e12V, 24V, and 48V DC systems\u003c\/strong\u003e. With a robust \u003cstrong\u003e135A rating at 30°C\u003c\/strong\u003e (derating factors apply), it is an excellent choice for \u003cstrong\u003eautomotive battery and starter wiring\u003c\/strong\u003e, \u003cstrong\u003eDC-DC charger installations\u003c\/strong\u003e, \u003cstrong\u003eMPPT solar charge controllers\u003c\/strong\u003e, and \u003cstrong\u003ehigh-power inverter connections\u003c\/strong\u003e. The cable's \u003cstrong\u003eoxygen-free copper conductor\u003c\/strong\u003e and durable \u003cstrong\u003e90°C rated PVC insulation\u003c\/strong\u003e ensure efficient power transfer and long-term reliability in harsh under-bonnet and mobile environments.\u003c\/p\u003e\n\u003cp\u003eUnlike standard electrical wire, this cable is built to withstand the vibration, heat, and flexing common in \u003cstrong\u003e4WD, caravan, marine, and heavy vehicle applications\u003c\/strong\u003e. Its fine-stranded construction (252\/0.32mm) provides excellent flexibility for routing through tight spaces, while the thick insulation resists abrasion, oil, and fuel exposure. Whether you're upgrading your \u003cstrong\u003edual battery system\u003c\/strong\u003e, wiring a \u003cstrong\u003ehigh-output alternator\u003c\/strong\u003e, or connecting a \u003cstrong\u003elarge inverter\u003c\/strong\u003e, this cable provides the current-carrying capacity and durability needed for critical power circuits.\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 (JASO D609 standard) for high-demand circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20.29mm² cross-sectional area\u003c\/strong\u003e (approx. 4 AWG equivalent) with fine-stranded 252\/0.32mm copper for flexibility\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOxygen-free copper conductor\u003c\/strong\u003e minimises voltage drop and resistive heating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e90°C continuous temperature rating\u003c\/strong\u003e for under-bonnet and high-heat environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoHS compliant and manufactured to Australian\/NZ standards\u003c\/strong\u003e for safety and quality assurance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold per metre\u003c\/strong\u003e for custom-length installations without waste\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOptimised for High-Current DC Systems\u003c\/h3\u003e\n\u003cp\u003eIn \u003cstrong\u003e12V automotive systems\u003c\/strong\u003e, voltage drop is a critical concern. This cable's low electrical resistance (0.9 ohm\/km at 20°C) helps maintain system voltage over longer runs, ensuring your \u003cstrong\u003ebattery chargers, inverters, and solar controllers\u003c\/strong\u003e operate efficiently. It is suitable for \u003cstrong\u003e24V and 48V systems\u003c\/strong\u003e as well, with a maximum DC voltage rating of 120V, making it versatile for \u003cstrong\u003eoff-grid solar setups, truck electrical systems, and marine applications\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003e4B\u0026amp;S gauge (20.29mm²)\u003c\/strong\u003e is a popular choice for \u003cstrong\u003eauxiliary battery wiring\u003c\/strong\u003e, \u003cstrong\u003ewinch power cables\u003c\/strong\u003e, and \u003cstrong\u003ehigh-amperage accessory circuits\u003c\/strong\u003e. Its robust construction reduces the risk of overheating and insulation failure, even when bundled or installed in hot engine bays. *Note typical derating factors apply: when multiple cables are bundled or ambient temperatures exceed 30°C, the current-carrying capacity must be adjusted according to the provided derating tables.\u003c\/p\u003e\n\u003ch3\u003eBuilt for Australian Conditions\u003c\/h3\u003e\n\u003cp\u003eManufactured to meet stringent \u003cstrong\u003eAustralian and New Zealand safety standards\u003c\/strong\u003e, this cable is engineered for the unique demands of the Australian market. From \u003cstrong\u003ecorrugated outback tracks\u003c\/strong\u003e to \u003cstrong\u003ecoastal marine environments\u003c\/strong\u003e, the insulation resists degradation from UV exposure, moisture, and chemicals. The fine-stranded copper conductor withstands repeated flexing without work-hardening or breaking, a common failure point in inferior cables.\u003c\/p\u003e\n\u003cp\u003eFor installers and DIY enthusiasts, the cable's \u003cstrong\u003e8.3mm outer diameter\u003c\/strong\u003e is compatible with standard \u003cstrong\u003e3\/8\"-16 (approx. M10) stud terminals\u003c\/strong\u003e and heavy-duty lugs up to \u003cstrong\u003e4\/0 AWG (approx. 95mm²)\u003c\/strong\u003e. This ensures secure, low-resistance connections in \u003cstrong\u003efuse blocks, busbars, and battery terminals\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomotive battery and starter motor cables\u003c\/strong\u003e for cars, 4WDs, trucks, and buses\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual battery system wiring\u003c\/strong\u003e with DC-DC chargers and smart isolators\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-power inverter connections\u003c\/strong\u003e up to 2000W (depending on cable length and voltage)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolar charge controller to battery bank wiring\u003c\/strong\u003e in off-grid and mobile setups\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarine electrical systems\u003c\/strong\u003e requiring tinned copper alternatives (verify suitability for marine use)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneral high-current DC power distribution\u003c\/strong\u003e in custom vehicle and equipment builds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eUpgrade Your Power System with Confidence\u003c\/h3\u003e\n\u003cp\u003eSelect the \u003cstrong\u003e4B\u0026amp;S (20.29mm²) black single core automotive cable\u003c\/strong\u003e for your next installation and experience the difference that quality materials and precise manufacturing make. Add the required length to your cart and build a power system that delivers when you need it most.\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":52364093980955,"sku":"Key-KABC1287030-BK","price":11.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0854\/3354\/9083\/files\/Key-KABC1287030-BK-01.jpg?v=1781609469","url":"https:\/\/www.nbcampingequipment.com.au\/products\/4bs-black-single-core-automotive-cable-per-metre","provider":"NB Camping Equipment","version":"1.0","type":"link"}