AS/NZS 3008.1.1:2017
Table 27(1), 27(2)
Rating factors for air and soil ambient temperature
The cable size and correction factors tools read the Australian ambient factor when the Standard is AU and the Edition is 2017. The factors sit on a 40 °C air base, so 40 °C on site applies no reduction.
Verified: read against the printed standard, pages 88. Checked 24 Sept 2026.
Units: Temp °C
These are the values AmpSize encodes. No text of the standard is reproduced. Verify against the current standard.
41 rows
| Insulation | Medium | Conductor temp C | Temp (°C) | Factor |
|---|---|---|---|---|
| PVC | air | 75 | 15 | 1.35 |
| PVC | air | 75 | 20 | 1.28 |
| PVC | air | 75 | 25 | 1.21 |
| PVC | air | 75 | 30 | 1.14 |
| PVC | air | 75 | 35 | 1.07 |
| PVC | air | 75 | 40 | 1 |
| PVC | air | 75 | 45 | 0.91 |
| PVC | air | 75 | 50 | 0.82 |
| PVC | air | 75 | 55 | 0.72 |
| PVC | air | 75 | 60 | 0.6 |
| PVC | air | 75 | 65 | 0.49 |
| PVC | air | 75 | 70 | 0.37 |
| XLPE | air | 90 | 15 | 1.26 |
| XLPE | air | 90 | 20 | 1.2 |
| XLPE | air | 90 | 25 | 1.15 |
| XLPE | air | 90 | 30 | 1.1 |
| XLPE | air | 90 | 35 | 1.05 |
| XLPE | air | 90 | 40 | 1 |
| XLPE | air | 90 | 45 | 0.94 |
| XLPE | air | 90 | 50 | 0.88 |
| XLPE | air | 90 | 55 | 0.81 |
| XLPE | air | 90 | 60 | 0.73 |
| XLPE | air | 90 | 65 | 0.65 |
| XLPE | air | 90 | 70 | 0.57 |
| XLPE | air | 90 | 75 | 0.47 |
| XLPE | air | 90 | 80 | 0.34 |
| XLPE | air | 90 | 85 | 0.19 |
| PVC | soil | 75 | 10 | 1.14 |
| PVC | soil | 75 | 15 | 1.1 |
| PVC | soil | 75 | 20 | 1.05 |
| PVC | soil | 75 | 25 | 1 |
| PVC | soil | 75 | 30 | 0.95 |
| PVC | soil | 75 | 35 | 0.89 |
| PVC | soil | 75 | 40 | 0.83 |
| XLPE | soil | 90 | 10 | 1.11 |
| XLPE | soil | 90 | 15 | 1.07 |
| XLPE | soil | 90 | 20 | 1.03 |
| XLPE | soil | 90 | 25 | 1 |
| XLPE | soil | 90 | 30 | 0.97 |
| XLPE | soil | 90 | 35 | 0.93 |
| XLPE | soil | 90 | 40 | 0.89 |