(tables in the standard assume):
20A load, 230V single-phase, 50m run, 3-core PVC copper cable in conduit with 3 other circuits, ambient 45°C. as nzs 3008
Annex B provides cable ampacity tables for various types of cables and installation conditions. (tables in the standard assume): 20A load, 230V
AS/NZS 3008 is a comprehensive standard that outlines the requirements for the selection of wiring systems and cables for electrical installations, including: as nzs 3008