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⚡ Engineering Tool
Cable Sizing Calculator
Determine the minimum required cable cross-section based on load current, circuit length, voltage level, and installation method. Results comply with IEC 60364-5-52.
Input Parameters
Full load current of the circuit
Must be a positive number
One-way cable run length
Must be a positive number
Default 30°C (air) / 20°C (ground)
IEC: 3% terminal / 5% total
Calculation Results
Enter parameters above and click Calculate
Standard Cable Sizes Reference
IEC 60228 standard cross-sections. Highlighted row = recommended size.
| Size (mm²) | Iz Cu (A) | Iz Al (A) | R Cu (mΩ/m) | R Al (mΩ/m) |
|---|
Assumptions & Notes
Input Summary
Design Current—
System Voltage—
Cable Length—
Conductor—
Install Method—
Ambient Temp—
Engineering Notes
Results are for guidance only. Final cable selection must be verified by a qualified electrical engineer per local regulations.
Always apply the most restrictive criterion: ampacity, voltage drop, and short-circuit capacity must all be satisfied.