Cable Size Calculator
Calculate the recommended cable size (cross-sectional area) for electrical installations based on current, voltage, length, and material.
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How to use this tool?
- 1 Enter the requested data in the fields above carefully.
- 2 Click the calculate button to process the information instantly.
- 3 Analyze the detailed result and the formula explanation presented below.
- 4 You can print, share, or even embed the calculator on your own site for free.
Unlike traditional static calculators, our tools adapt to specific user needs. They include detailed explanations of the formulas used, ensuring transparency in results. Furthermore, our design is focused on user experience, eliminating distractions and focusing on what really matters: your data and conclusions.
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Frequently Asked Questions
It calculates the minimum cross-sectional area of a cable to ensure safe voltage drop and prevent overheating in electrical installations.
You need the current (amps), voltage (volts), cable length (meters), material (copper or aluminum), phase (single or three), and maximum allowed voltage drop percentage.
Using the correct cable size prevents voltage drop beyond acceptable limits, reduces energy loss, and avoids overheating which can cause fire hazards.
No, this calculator provides a basic estimate based on voltage drop. For detailed installations, consult electrical codes and consider derating factors.