By following this guide and cross-referencing with the specific tables in (or .2), you ensure your cable selection is compliant, safe, and efficient.
| Load (A) | Max C/B (A) | Minimum c.s.a. (mm²) | Voltage drop (mV/A/m) | |----------|-------------|----------------------|------------------------| | 10 | 10 | 1.0 | 44.0 | | 16 | 16 | 1.5 | 29.0 | | 20 | 20 | 2.5 | 18.0 | | 32 | 32 | 4.0 | 11.0 | | 40 | 40 | 6.0 | 7.3 | | 55 | 50 | 10.0 | 4.4 | | 70 | 63 | 16.0 | 2.8 |
The base ratings found in Step 1 assume "ideal" conditions. In reality, cables get hot, and heat cannot escape. You must apply derating factors found in and referenced in AS/NZS 3000 .
