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AmpSize

AS/NZS 3000:2018

Table 3.3

Nominal minimum cross-sectional area of conductors

The minimum conductor size tool reads the smallest conductor Table 3.3 allows for the circuit use, the wiring type and the conductor material. Exception 1 can allow a smaller socket‑outlet conductor, and the tool points at it instead of applying it.

Verified: read against the printed standard, pages 158, 160. Checked 26 Sept 2026.

Units: Size mm2

These are the values AmpSize encodes. No text of the standard is reproduced. Verify against the current standard.

Back to its card on the AS/NZS 3000:2018 page

7 rows

Table 3.3, Nominal minimum cross-sectional area of conductors
UseWiringMaterialSize (mm2)
socket‑outletsinsulatedCu2.5
other-circuitsinsulatedCu1
signal-and-relay-controlinsulatedCu0.5
barebareCu6
flexibleinsulated-flexibleCu0.75
aerialaerialCu6
aerialaerialAl16

Tools that read it (2)

Guides and learn pages that cite it (3)