AS/NZS 3008.1.2:2017
Table 23
Grouping factors for single‑core circuits on trays, ladder supports, racks and cleats in air
The cable size and correction factors tools read the factor for single‑core circuits on a tray, a ladder, a rack or cleats. The factor depends on the support, the tiers, and whether the circuits touch.
已核验：对照印刷版标准阅读，页码 80。检查于 26 Sept 2026。
单位：Tiers count, Count circuits per tier or row
这些是 AmpSize 所编码的数值。不转载标准原文。请依据现行标准核对。
22 行
| 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 |