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Free Cable Sizing Calculator Excel!
Free Excel cable sizing tool for electrical engineers. Enter load, pick cable, get result instantly. No guesswork. No complicated tables. Download free
“This calculator has become an essential part of my design workflow. What used to take hours of manual calculations can now be completed in minutes with confidence and accuracy.".”
What you get:
Get a Free Cable Sizing Calculator — Built for Electrical Engineers Who Need a Fast, Reliable LV Cable Check
What is it all aboutF?
• LV copper cable sizing — single-phase and three-phase circuits up to 400V.
• Current-carrying capacity check — based on SANS 10142 standard cable tables.
• Basic voltage drop calculation — flags circuits that exceed the 5% voltage drop limit.
• Single installation method — cables in conduit or on cable tray (standard conditions).
• Pass/fail indicator — green or red result cell so you know immediately if the cable size is acceptable.
• No macros, no add-ins — works in Excel 2016 and later, including Excel for Mac.