In Australia , selecting the correct cable size is governed by strict safety standards to prevent overheating and electrical fires. The primary regulatory document is , known as the Wiring Rules , which dictates how electrical installations must be designed and verified. Standard Domestic Cable Sizes
Only use cable marked with the Australian approval number (e.g., "V-90"). cable sizes australia
If you’ve ever stood in the electrical aisle at Bunnings or looked at a wiring diagram, you’ve probably seen numbers like . In Australia, electrical cables are measured in square millimetres (mm²) , which refers to the cross-sectional area of the copper conductor. In Australia , selecting the correct cable size
In Australia, the most common domestic cable is , flat grey cable. If you’ve ever stood in the electrical aisle
All cable selections in Australia must reference (Electrical installations – Selection of cables). This standard provides tables that adjust current ratings based on:
For sub-mains (from the main switchboard to a shed or second building), you will likely use or XLPE cable.
Here is the breakdown of standard cable sizes and what they are used for in Aussie homes and sheds.