While there are many tables, most residential and commercial jobs rely on these three primary tables found in :
AS3000 separates tables based on the (how the cable is run) and the insulation type .
While AS/NZS 3000 provides the overarching regulatory requirements for electrical installations, it does not contain the detailed current-carrying capacity (CCC) tables itself. Instead, it refers practitioners to (for Australia) or AS/NZS 3008.1.2 (for New Zealand) for cable selection. 2. Core Selection Criteria ( as3000 current-carrying capacity table
Note that these values are approximate and for illustration purposes only. The actual values may vary depending on the specific cable and installation conditions.
Typical limits are 75°C (for standard PVC) and 90°C (for XLPE). While there are many tables, most residential and
The "Wiring Rules" sets the foundational safety requirements for electrical installations in Australia and New Zealand. While it provides general rules, the specific current-carrying capacity tables used for detailed cable selection are found in the companion standard, AS/NZS 3008.1.1 . Understanding Current-Carrying Capacity
Tables 22–26 (grouping) and 27 (ambient temperature) adjust capacities for real-world conditions. The Three-Step Sizing Process Typical limits are 75°C (for standard PVC) and
| Table | Purpose | | :--- | :--- | | | Free air ratings (overhead lines, open wiring – higher capacity) | | Table 15 | Single-core cables enclosed in conduit (derated vs. clipped direct) | | Table 16 | Multi-core cables in conduit | | Table 20 | XLPE (90°C) insulation – higher ratings than PVC | | Table 26 | Aluminium conductors (typically 0.8× copper rating for same size) |
Before referring to the table, consider the following factors:
Ensure that the selected value does not exceed the maximum current that the cable or conductor will carry.