Calculate Cable Cross-Section Correctly: Complete Guide
The correct cable cross-section is crucial for the safety of your electrical installation. This guide shows you how to use our Cable Cross-Section Calculator correctly according to DIN VDE 0298-4.
Important Steps
- Select Current Type: AC (230V), Three-phase (400V), or DC
- Enter Current or Power: You can enter either amperes or watts
- Cable Length: Enter simple length (not round trip)
- Material: Copper (recommended) or Aluminum
- Installation Type: In conduit, surface-mounted, or buried
- Max Voltage Drop: 3% for final circuits (DIN VDE 0100-520)
Practical Example: Cooktop
9 kW cooktop, 15 meters distance → Result: 2.5 mm²