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AmpSize

AS/NZS 3008.1.1:2025

Table 3.35

Correction factors for multicore cables on trays, ladders, racks and cleats in air

On the 2025 edition, the cable size and correction factors tools read this table for multicore cables on a tray, a ladder, a rack or cleats. The DC cable size tool reads it for 2‑core cables. The values print the same as in 2017.

Kua manatokotia: pānuitia ki te paerewa tā, whārangi 75. I tirohia 27 Sept 2026.

Ngā unit: Tiers count, Count cables 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.

Hoki ki tana kāri i te whārangi AS/NZS 3008.1.1:2025

22 rārangi

Table 3.35, Correction factors for multicore cables on trays, ladders, racks and cleats in air
ItemInstallationSpacingTiers (count)Factors
1unperforated-traystouching10.97, 0.85, 0.78, 0.75, 0.71, 0.68
2unperforated-traystouching20.97, 0.84, 0.76, 0.73, 0.68, 0.63
3unperforated-traystouching30.97, 0.83, 0.75, 0.72, 0.66, 0.61
4unperforated-traysspaced10.97, 0.96, 0.94, 0.93, 0.9, —
5unperforated-traysspaced20.97, 0.95, 0.92, 0.9, 0.86, —
6unperforated-traysspaced30.97, 0.94, 0.91, 0.89, 0.84, —
7perforated-traystouching11, 0.88, 0.82, 0.78, 0.76, 0.73
8perforated-traystouching21, 0.87, 0.8, 0.76, 0.73, 0.68
9perforated-traystouching31, 0.86, 0.79, 0.75, 0.71, 0.66
10perforated-traysspaced11, 1, 0.98, 0.95, 0.91, —
11perforated-traysspaced21, 0.99, 0.96, 0.92, 0.87, —
12perforated-traysspaced31, 0.98, 0.95, 0.91, 0.85, —
13ladder-supports-racks-cleatstouching11, 0.87, 0.82, 0.8, 0.79, 0.78
14ladder-supports-racks-cleatstouching21, 0.86, 0.8, 0.78, 0.76, 0.73
15ladder-supports-racks-cleatstouching31, 0.85, 0.79, 0.76, 0.73, 0.7
16ladder-supports-racks-cleatsspaced11, 1, 1, 1, 1, —
17ladder-supports-racks-cleatsspaced21, 0.99, 0.98, 0.97, 0.96, —
18ladder-supports-racks-cleatsspaced31, 0.98, 0.97, 0.96, 0.93, —
19vertical-perforated-traystouching11, 0.88, 0.82, 0.77, 0.73, 0.72
20vertical-perforated-traystouching21, 0.88, 0.81, 0.76, 0.72, 0.7
21vertical-perforated-traysspaced11, 0.91, 0.89, 0.88, 0.87, —
22vertical-perforated-traysspaced21, 0.91, 0.88, 0.87, 0.86, —

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