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.
已核验：对照印刷版标准阅读，页码 74。检查于 27 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 |