Cable Size Chart Mm2 [top] Jun 2026
| Conductor Size (mm²) | Typical Current Rating (Amps) | Typical Application | Typical Fuse/MCB Breaker Size | | :--- | :--- | :--- | :--- | | | 15 A – 18 A | Lighting Circuits | 10 A or 16 A | | 2.5 mm² | 20 A – 24 A | Ring Mains, Sockets (Domestic) | 20 A or 25 A | | 4.0 mm² | 28 A – 32 A | Power Showers, Small Cookers | 32 A | | 6.0 mm² | 36 A – 40 A | Cookers, EV Chargers (32A) | 40 A or 50 A | | 10 mm² | 50 A – 55 A | Sub-mains, Industrial Machinery | 50 A or 63 A | | 16 mm² | 68 A – 76 A | Sub-mains Distribution | 63 A or 80 A | | 25 mm² | 89 A – 96 A | Incoming Service Mains | 80 A or 100 A | | 35 mm² | 110 A – 120 A | Commercial Supply | 100 A or 125 A | | 50 mm² | 135 A – 150 A | Industrial Busbar Feeds | 125 A or 160 A | | 70 mm² | 170 A – 190 A | High Demand Industrial | 160 A or 200 A | | 95 mm² | 210 A – 230 A | Transformer Feeds | 200 A or 250 A | | 120 mm² | 245 A – 260 A | Main Distribution Panels | 250 A |
mm2m m squared (square millimeters) refers to the of the conductive metal strands inside a cable. It is the global metric standard (defined by IEC 60228 ) used to determine how much electrical current a wire can safely carry. Cable Size & Current Rating Chart cable size chart mm2
depending on:
The standard metric for measuring a cable's physical size is the , expressed in square millimeters (mm²). This measurement represents the area of the conductive copper or aluminum strands inside the insulation. Standard Cable Size Chart (mm²) and Current Ratings | Conductor Size (mm²) | Typical Current Rating
