MijnKabelberekening
MijnKabelberekening
Professional cable cross-section calculation for electrical installations, compliant with IEC 60364-5-52 and NEN 1010.
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What does it do?
MijnKabelberekening calculates the minimum required cable cross-section for electrical installations based on:
- Load current and ambient temperature
- Correction factors — bundling, ground installation, temperature
- Maximum voltage drop (configurable %)
- Short-circuit protection — thermal and dynamic verification
- Source impedance — transformer data (50–2000 kVA) or manual entry
Features
Cable Calculation
Calculate the correct cable cross-section in seconds. The app checks:
- Current-carrying capacity (IEC 60364-5-52 Table B.52.4/B.52.5)
- Voltage drop across the cable
- Short-circuit withstand capability
Source Impedance Module
Enter transformer specifications or connect to a network source:
- Short-circuit current at source (Ik3f, Ik1f)
- Short-circuit current at cable end
- Earthing system selection: TN-S, TN-C, TN-C-S, TT, IT
- NEN 1010 compliance hints per earthing system
Cable Catalogue
Built-in catalogue with copper and aluminium cables (PVC/XLPE insulation). Add your own custom cables and share them across projects.
Project Management
Organise calculations per project. Each project stores all input parameters and results for future reference or printing.
Tree Calculation
Model branching cable networks — calculate multiple branches simultaneously in a single overview.
Bundle Position Comparison
For cables in cable trays with multiple layers, the app compares four characteristic positions:
| Position | Solar | fH | fV |
|---|---|---|---|
| Bundle centre | None (shielded) | fH(nH) | fV(nV) |
| Top layer, centre ☀ | Full (+25 K) | fH(nH) | fV(2) |
| Top layer, corner ☀ | Full (+25 K) | fH(2) | fV(2) |
| Lower layers, corner | None (shielded) | fH(2) | fV(2) |
Solar irradiance only affects the top layer — lower layers are shielded by cables above them.
Wind Cooling & PV Layer Position
For PV single-core cables in rooftop cable trays:
- Wind cooling (IEC 60287-2-1): reduces effective ambient temperature by 3–15 K depending on wind speed; steel lid adds +5 K penalty
- PV layer position (IEC 60364-5-52): layer-dependent solar ΔT (+25 K top, +12 K 2nd, +5 K middle, 0 K bottom)
Correction Factors
Interactive table for:
- Installation method (A1, A2, B1, B2, C, D, E, F, G)
- Ambient temperature
- Grouping / bundling factor
- Ground temperature and thermal resistivity
Standards
| Standard | Description |
|---|---|
| IEC 60364-5-52 | Selection and erection of electrical equipment — wiring systems |
| IEC 60287-2-1 | Electric cables — thermal resistance / wind cooling model |
| NEN 1010 | Safety requirements for low-voltage installations |
| IEC 60076-5 | Power transformers — ability to withstand short circuit |
Platforms
| Platform | Status |
|---|---|
| Windows 10/11 | Available — download here |
| macOS | Available — download here |
| Android | Coming soon |
| iOS / iPadOS | Coming soon |
Api documentation trakaka
License
MijnKabelberekening is open source software, licensed under the GNU General Public License v3.0.
© 2026 Jay Smeekes