AS/NZS 3008.1.1:2017
Table 24
Grouping factors for multicore cables on trays, ladder supports, racks and cleats in air
With the AU standard, the cable size and correction factors tools read this table for multicore cables on a tray, a ladder, a rack or cleats. The values print the same as the New Zealand part.
Verified: read against the printed standard, pages 82. Checked 26 Sept 2026.
Units: Tiers count, Count cables per tier or row
These are the values AmpSize encodes. No text of the standard is reproduced. Verify against the current standard.
22 rows
| Item | Installation | Spacing | Tiers (count) | Factors |
|---|---|---|---|---|
| 1 | unperforated-trays | touching | 1 | 0.97, 0.85, 0.78, 0.75, 0.71, 0.68 |
| 2 | unperforated-trays | touching | 2 | 0.97, 0.84, 0.76, 0.73, 0.68, 0.63 |
| 3 | unperforated-trays | touching | 3 | 0.97, 0.83, 0.75, 0.72, 0.66, 0.61 |
| 4 | unperforated-trays | spaced | 1 | 0.97, 0.96, 0.94, 0.93, 0.9, — |
| 5 | unperforated-trays | spaced | 2 | 0.97, 0.95, 0.92, 0.9, 0.86, — |
| 6 | unperforated-trays | spaced | 3 | 0.97, 0.94, 0.91, 0.89, 0.84, — |
| 7 | perforated-trays | touching | 1 | 1, 0.88, 0.82, 0.78, 0.76, 0.73 |
| 8 | perforated-trays | touching | 2 | 1, 0.87, 0.8, 0.76, 0.73, 0.68 |
| 9 | perforated-trays | touching | 3 | 1, 0.86, 0.79, 0.75, 0.71, 0.66 |
| 10 | perforated-trays | spaced | 1 | 1, 1, 0.98, 0.95, 0.91, — |
| 11 | perforated-trays | spaced | 2 | 1, 0.99, 0.96, 0.92, 0.87, — |
| 12 | perforated-trays | spaced | 3 | 1, 0.98, 0.95, 0.91, 0.85, — |
| 13 | ladder-supports-racks-cleats | touching | 1 | 1, 0.87, 0.82, 0.8, 0.79, 0.78 |
| 14 | ladder-supports-racks-cleats | touching | 2 | 1, 0.86, 0.8, 0.78, 0.76, 0.73 |
| 15 | ladder-supports-racks-cleats | touching | 3 | 1, 0.85, 0.79, 0.76, 0.73, 0.7 |
| 16 | ladder-supports-racks-cleats | spaced | 1 | 1, 1, 1, 1, 1, — |
| 17 | ladder-supports-racks-cleats | spaced | 2 | 1, 0.99, 0.98, 0.97, 0.96, — |
| 18 | ladder-supports-racks-cleats | spaced | 3 | 1, 0.98, 0.97, 0.96, 0.93, — |
| 19 | vertical-perforated-trays | touching | 1 | 1, 0.88, 0.82, 0.77, 0.73, 0.72 |
| 20 | vertical-perforated-trays | touching | 2 | 1, 0.88, 0.81, 0.76, 0.72, 0.7 |
| 21 | vertical-perforated-trays | spaced | 1 | 1, 0.91, 0.89, 0.88, 0.87, — |
| 22 | vertical-perforated-trays | spaced | 2 | 1, 0.91, 0.88, 0.87, 0.86, — |