This Matweld 25mm² welding cable is a high-flexibility power cable designed to carry the high-current output from a welding inverter to the electrode holder or earth clamp. The Blue jacket is often used for easy identification in workshops to distinguish between different lead sets or to mark a specific polarity.
Technical Specifications
- Cross-Sectional Area: 25mm².
- Length: 6 Metres.
- Current Carrying Capacity: * Approximately 150A – 200A at a 60% duty cycle.
- Up to 250A at a lower (35%) duty cycle.
- Conductor Material: High-purity multi-strand Copper (for maximum conductivity and flexibility).
- Sheath Material: Flexible PVC or Rubber compound (Oil, chemical, and flame resistant).
- Color: Blue.
Key Features
- High Flexibility: The core is made of hundreds of "hair-thin" copper strands. This allows the cable to drape easily and resist kinking, which is essential for welders moving around a workpiece.
- Durable Insulation: The blue outer jacket is designed to withstand the harsh conditions of a workshop, including abrasion against concrete floors and exposure to stray welding sparks.
- Low Resistance: The 25mm² copper core minimizes "voltage drop," ensuring that the power leaving your inverter is the same power reaching your welding arc, even at a 6-metre distance.
- Easy Identification: In busy environments, having a blue cable helps prevent mix-ups with other 16mm² or 35mm² black cables, ensuring you are always using the correct gauge for your machine's amperage.
Common Applications
- DIY & Light Industrial Welder Leads: The ideal replacement cable for 140A to 200A inverter welders.
- Earth Leads: Used to create a 6m "return" lead, allowing you to clamp onto large structures far from the machine.
- Battery Jump Starters: Often used to manufacture heavy-duty jump leads for bakkies and tractors due to its high current capacity.
- Solar Battery Banks: Suitable for connecting batteries in 12V or 24V solar systems where high flexibility and current handling are required.
Usage & Installation Tips
- Matching Connectors: For a 25mm² cable, you typically use 10–25mm² or 35–50mm² Dinse plugs, depending on your welder's socket size. Ensure the copper is tightly clamped inside the plug to prevent heat buildup.
- Avoid Coiling: When welding at high amperages, do not leave the 6m cable coiled up. This can create an "induction coil" effect, causing the cable to heat up and potentially damaging the welder's electronics.
- Check for "Hot Spots": If the cable feels hot to the touch during use, you are either exceeding the duty cycle or have a loose connection at the lugs.
- Cleaning: Keep the blue jacket clean of oil and grease using Herschell Clean Up Spray. This prevents the insulation from degrading prematurely.
