MAINS POWER CABLE 5 CORE 6.0MM PER METRE (RB5G6)
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Availability: 30 In stock, ready to be shipped!
5 Core 6mm² Flexible Three-Phase Power Cable — Black Sheath (Sold Per Metre)
The 5 core 6mm² flexible cable is a high-amperage three-phase power cable built for the heavier end of workshop and industrial power delivery. With five colour-coded cores — three phases, neutral, and earth — in finely stranded copper, it carries the current that larger three-phase welders, compressors, sub-distribution boards, and high-capacity HVAC plant demand, while staying flexible enough to coil, route, and terminate without a fight.
The step up from 4mm² to 6mm² matters most on long runs and high-draw machines: the larger cross-section reduces voltage drop, which keeps arc performance stable on big MIG and TIG power sources running at the top of their duty cycle. Class 5 multi-strand construction resists bend fatigue and vibration, and the tough black outer sheath shrugs off oil, abrasion, moisture, and the mechanical knocks of a working shop floor.
Sold per metre, so you can buy exactly what the job needs — whether that's a machine tail, a heavy three-phase extension lead, or flexible supply into a temporary distribution set.
Key Features
- High-amperage capacity: 6.0mm² conductors handle demanding three-phase loads with reduced voltage drop on longer runs
- Three-phase ready: Five cores covering three phases, neutral, and earth in one cable
- Class 5 flexible stranding: Multi-strand copper for minimal bend fatigue and strong vibration resistance
- Heavy-duty sheath: Black outer jacket resists oil, chemicals, moisture, and abrasion
- Standard AU colour coding: Green/yellow, blue, brown, black, grey for fast, unambiguous termination
- Cut to length: Priced per metre — no paying for a full drum
Technical Specifications
| Feature | Specification |
|---|---|
| Cores | 5 (3 phase + neutral + earth) |
| Conductor size | 6.0mm² |
| Conductor type | Flexible multi-strand copper (Class 5) |
| Core colours | Green/Yellow (E), Blue (N), Brown, Black, Grey (phases) |
| Voltage rating | 450/750V |
| Sheath | Black, oil and abrasion resistant |
| Typical use | High-amperage welders, machinery, sub-distribution, HVAC, three-phase leads |
Frequently Asked Questions
What is 5 core 6mm² cable used for? 5 core 6mm² flexible cable supplies high-draw three-phase equipment — larger welders, air compressors, machine tools, sub-distribution panels, and commercial HVAC systems. The five cores carry three phases, neutral, and earth, making it the standard choice for heavy 415V extension leads and machine tails.
What amperage can 6mm² five core cable handle? As a general guide, 6mm² flexible cable supports circuits in the region of 32–40A depending on installation method, ambient temperature, and run length. Always match the cable to the circuit protection and confirm against AS/NZS 3008 current ratings for your specific conditions.
Should I use 4mm² or 6mm² cable for my three-phase welder? It depends on the welder's supply current and the lead length. For machines on a 32A supply or leads over roughly 15–20 metres, 6mm² is the safer choice — the larger conductors reduce voltage drop, which protects arc performance when the machine is working hard. For smaller machines on shorter leads, 4mm² is usually sufficient.
Can I use this for a three-phase extension lead? Yes — pair it with 415V plugs and sockets rated to your equipment's supply current (typically 32A for this cable size) and keep the lead as short as practical.
What do the core colours mean? Green/yellow is earth, blue is neutral, and brown, black, and grey are the three phase conductors, following standard Australian wiring colour identification.
Pairs Well With
- 5 Core 4mm² Flexible Cable — for smaller machines and shorter runs
- 415V three-phase plugs and sockets (32A)
- Cable glands and strain-relief fittings
- High-amperage three-phase MIG and TIG welders
