Electronics & automation
Cable cross-section calculator online
Select the minimum conductor cross-section for power and signal lines using current and distance to the load.
Cable sizing
Preliminary cross-section estimator based on current and voltage drop. No standard ampacity tables are used.
Design current
16.1529 A
Minimum cross-section
1.6387 mm²
Recommended standard size
2.5 mm²
Estimated drop
1.9664% (4.5228 V)
The estimate is based on material resistivity and allowable voltage drop. For the final choice, verify installation method, heating, protection and applicable standards.
Frequently asked questions
What affects cable cross-section selection?
Load current, run length and allowed voltage drop. The calculator estimates a minimum cross-section for those inputs.