Low voltage cable derating factors -
Australian and New Zealand conditions
Installation conditions that avoid derating
Derating factor tables
The derating factor Tables below are from both AS/NZS 3008.1.1 (Australian conditions) and AS/NZS 3008.1.2 (New Zealand conditions). The Tables from both standards are the same except for TABLE 27(1) and 27(2) which differ.
Disclaimer: No responsibility is assumed for the accuracy of the Tables below. Further, there are additional notes to these tables which have not been included.