3.0mm Black Electrical Cable – 500 Metre Roll

The Cable That Wires Australia's Caravans, Campers & 4WDs

Behind every reliable caravan electrical system is quality cable — and not just any cable. The right gauge, the right insulation, and the right length to get the job done properly without joins, weak points, or undersized wiring that causes problems down the track. This 3.0mm black electrical cable on a 500-metre roll is the go-to choice for auto electricians, caravan manufacturers, and experienced DIY builders who know that cutting corners on cable is never worth it.

3.0mm gauge — the versatile workhorse of 12V wiring. The 3.0mm cable gauge sits in the sweet spot for a huge range of common caravan and camper electrical applications. It carries enough current for lighting circuits, accessory feeds, water pump wiring, USB and 12V socket circuits, control wiring, and general purpose 12V runs throughout a caravan or camper trailer. If you're building or rewiring a complete electrical system, 3.0mm cable will be one of your most-used gauges from start to finish.

Black — the essential negative and general purpose colour. Black is the universally recognised colour for negative cable runs and general-purpose wiring in automotive and caravan electrical systems. Correct colour coding isn't just about convention — it's about safety. Properly colour-coded wiring makes fault-finding faster, installation cleaner, and future modifications simpler and safer. Whether you're running negative returns, earth cables, or general circuit wiring, black is the right colour for the job.

500 metres — the professional's choice. A 500-metre roll isn't just for large workshops and caravan manufacturers — it's the smart buy for anyone who builds, maintains, or repairs caravan and camper electrical systems regularly. At 500 metres you have enough cable to wire multiple complete systems, tackle large rewiring projects, keep a substantial supply on the shelf for ongoing work, and eliminate the frustration of running short mid-job. It's the most cost-effective way to buy quality cable, delivering a significantly lower cost per metre than buying shorter lengths.

Heavy-duty insulation built for the Australian environment. The insulation on this cable is engineered to withstand the demanding conditions that caravan and camper wiring faces every day — high under-chassis temperatures, UV exposure, abrasion against metal edges, the constant flexing and vibration of touring travel, and the full range of Australian climate conditions from tropical humidity to outback heat. Quality insulation is what separates cable that lasts for years from cable that cracks, hardens, and fails long before it should.

Flexible construction — easy to run through tight spaces. Routing cable through a caravan wall cavity, under a floor, through a chassis rail, or behind a panel is always easier with flexible, well-constructed cable. The multi-strand construction of this cable gives it the flexibility needed to navigate tight bends, awkward routes, and confined spaces without kinking, breaking strands, or creating stress points that lead to premature failure.

Cut exactly what you need — no waste, no joining. With 500 metres on the roll, you always have exactly the length you need for any run — no compromising with short lengths, no unnecessary joins in the middle of a circuit run, and no wasted offcuts that aren't long enough to be useful. Run your cables in single, unjoined lengths from source to destination for the cleanest, most reliable installation possible.

Suitable for a wide range of applications. From simple single-circuit wiring jobs to complete multi-circuit caravan electrical builds, this cable is up to the task. Use it for 12V lighting circuits, accessory socket wiring, water pump feeds, control wiring, earth returns, battery negative cables, and general-purpose wiring throughout your caravan, camper trailer, motorhome, or 4WD accessory build.

✅ Key Features 

• 3.0mm gauge — Versatile sizing for a wide range of 12V circuit applications
• 500-metre roll — Professional supply for builds, repairs & ongoing work
• Black insulation — Correct colour coding for negative & general purpose wiring
• Heavy-duty insulation — Resistant to heat, UV, abrasion & Australian conditions
• Flexible construction — Easy to route through tight spaces & around bends
• Multi-strand core — Flexible, durable & resistant to vibration fatigue
• Cost-effective bulk buy — Lowest cost per metre for professional supply
• Wide application — Suits lighting, accessories, earth returns & control wiring
• Australian conditions ready — Built for caravans, campers & 4WD builds

 Specifications