AS/NZS 3008.1.1:2025
Table 3.34
Correction factors for single‑core circuits on trays, ladders, racks and cleats in air
On the 2025 edition, the cable size, correction factors and DC cable size tools read this table for single‑core circuits on a tray, a ladder, a rack or cleats. The values print the same as in 2017.
Kua manatokotia: pānuitia ki te paerewa tā, whārangi 74. I tirohia 27 Sept 2026.
Ngā unit: Tiers count, Count circuits per tier or row
Ko ēnei ngā uara e tuhia ana e AmpSize. Kāore he kupu o te paerewa e tuhia ana. Whakamanahia ki te paerewa o nāianei.
22 rārangi
| Item | Installation | Spacing | Tiers (count) | Factors |
|---|---|---|---|---|
| 1 | unperforated-trays | touching | 1 | 0.95, 0.85, 0.84 |
| 2 | unperforated-trays | touching | 2 | 0.92, 0.83, 0.79 |
| 3 | unperforated-trays | touching | 3 | 0.91, 0.82, 0.76 |
| 4 | perforated-trays | touching | 1 | 0.97, 0.89, 0.87 |
| 5 | perforated-trays | touching | 2 | 0.94, 0.85, 0.81 |
| 6 | perforated-trays | touching | 3 | 0.93, 0.84, 0.79 |
| 7 | ladder-supports-racks-cleats | touching | 1 | 1, 0.95, 0.94 |
| 8 | ladder-supports-racks-cleats | touching | 2 | 0.95, 0.9, 0.88 |
| 9 | ladder-supports-racks-cleats | touching | 3 | 0.95, 0.89, 0.85 |
| 10 | vertical-perforated-trays | touching | 1 | 0.94, 0.85, — |
| 11 | vertical-perforated-trays | touching | 2 | 0.92, 0.83, — |
| 12 | unperforated-trays | spaced | 1 | 0.95, 0.95, 0.94 |
| 13 | unperforated-trays | spaced | 2 | 0.92, 0.91, 0.87 |
| 14 | unperforated-trays | spaced | 3 | 0.91, 0.9, 0.85 |
| 15 | perforated-trays | spaced | 1 | 0.97, 0.97, 0.96 |
| 16 | perforated-trays | spaced | 2 | 0.94, 0.93, 0.89 |
| 17 | perforated-trays | spaced | 3 | 0.93, 0.92, 0.86 |
| 18 | ladder-supports | spaced | 1 | 1, 1, 1 |
| 19 | ladder-supports | spaced | 2 | 0.95, 0.95, 0.93 |
| 20 | ladder-supports | spaced | 3 | 0.95, 0.94, 0.9 |
| 21 | vertical-perforated-trays | spaced | 1 | 1, 0.91, 0.89 |
| 22 | vertical-perforated-trays | spaced | 2 | 1, 0.9, 0.86 |