AS/NZS 3000:2018
Cl 5.3.3.1.3 Note 1
K values for the protective earthing conductor adiabatic equation
The earthing tool reads the k factor for the earthing conductor material and insulation. The factor sets the size the adiabatic equation returns for the fault current and time.
Verified: read against the printed standard, pages 277–278. Checked 26 Sept 2026.
Units: K A·s^0.5/mm2
These are the values AmpSize encodes. No text of the standard is reproduced. Verify against the current standard.
2 rows
| Kind | K (A·s^0.5/mm2) |
|---|---|
| pvc-copper | 136 |
| bare-copper | 170 |