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Cable Tray Sizes: ladder
6x4 to 6x6
Cable tray sizes and fill capacities by tray type per NEMA VE 1 and NEC Article 392, including channel, ladder, and solid bottom trays
| tray type | size key | depth in (in) | depth mm (mm) | loading capacity N m (N/m) | loading capacity plf (lb/ft) | material | nec fill pct (%) | nema class | rung spacing in (in) | standard | usable area in2 (in2) | usable area mm2 (mm2) | width in (in) | width mm (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ladder | 6x4 | 4 | 102 | 730 | 50 | steel | 50 | 20A | 9 | NEMA VE 1-2017; NEC 2023 Art. 392 | 22 | 14,194 | 6 | 152 |
| ladder | 6x6 | 6 | 152 | 730 | 50 | steel | 50 | 20A | 9 | NEMA VE 1-2017; NEC 2023 Art. 392 | 34 | 21,935 | 6 | 152 |
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