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Cable Tray Width Sizing Calculator

Estimate required tray width from equal-diameter cable geometry, entered spacing, usable tray depth, fill assumption and spare-width allowance.

Inputs

Cable and tray assumptions

Range: 1–10,000

The model assumes all cables have the same outside diameter and occupy one flat row.

Range: 0.1–500 mm

Use the actual outside diameter of the installed cable or cable assembly, in millimetres.

Range: 0–10

For example, 0.25 leaves a gap equal to one quarter of the cable outside diameter.

Range: 1–1,000 mm

Use usable internal depth, not the tray side-rail height or nominal catalogue depth.

Range: 0.1–100 %

Enter the project fill assumption used for this geometric estimate; this is not a tray-standard limit.

Range: 0–100 %

Enter the project allowance for future routing or installation tolerance.

Range: 1–10,000 mm

Use the usable internal width of the selected tray, not its nominal outside width.

Result

Total circular cable area (mm²)
3,769.9
Estimated required usable width (mm)
354.0
Circular area as percentage of selected tray envelope
18.8
Width required by entered area-fill limit (mm)
188.5
Width required by entered spacing (mm)
295.0
Selected width minus estimate (mm)
46.0
Tray width check
The selected tray width meets the entered geometric estimate. Confirm support span, thermal grouping, segregation, bend radius, access and the actual tray system separately.

Formula

Calculation logic

Formula definitions and substituted values.

Before relying on the result

  • Estimate tray width for a row of equal-diameter cables
  • Compare a selected tray width with spacing and fill assumptions
  • Use the result as a layout estimate with the entered dimensions and assumptions, then check the actual tray system and installation requirements.

Related calculators

Use the result as a layout estimate with the entered dimensions and assumptions, then check the actual tray system and installation requirements.