GGSTech ToolsHow this calculator works
This simplified resistive estimate uses conductor resistivity and ignores reactance.
Example: 50 A over 100 m using 16 mm² copper gives an approximate drop around 9.5 V in 3-phase.
Practical guidance
This tool is designed for fast planning and learning. Enter realistic values and compare the result with nameplate data, local standards and engineering practice before making a final selection.
Frequently asked questions
Is this enough for final cable design?
No. Long or large AC cables require impedance, temperature and installation factors.
What voltage drop is acceptable?
Limits depend on your standard, application and installation. Check the applicable code/project specification.
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