Electrical Cable Size Calculator – Wire Size Tool Free Download
Choosing the correct cable size is critical for safe and efficient electrical system design. This Electrical Cable Size Calculator helps engineers and electricians determine the ideal wire gauge based on current, voltage, and length.
Whether you’re working on residential, commercial, or industrial projects, this tool supports better planning, lower power losses, and enhanced safety.
What This Tool Does
- Calculate cable size based on load (kW or Ampere)
- Supports single-phase or three-phase systems
- Accounts for cable length and voltage drop
- Outputs standard copper/aluminum cable sizes
- Includes safety margin for derating and protection
File Details
| File Type | Excel / PDF / DWG |
| Tool Type | Electrical Cable Sizing Calculator |
| File Size | ~287 KB |
| Platform | Excel 2010+, DWG Viewer Compatible |
| Applications | Electric Load Design, Panel Wiring |
Why Use This Cable Size Calculator?
Cable oversizing wastes money. Undersizing risks fire or voltage loss. This calculator provides a balanced and accurate result based on real design inputs.
- Helps in distribution panel design
- Useful for load scheduling and feeder sizing
- Ideal for project submittals and quick reference
Best For:
- Electrical Draftsmen
- Site Engineers
- Panel Builders
- Junior Electrical Designers
- Students preparing load sheets
Related Downloads
Residential Electrical Load Calculator (Excel)
Download Cable Sizing Tool
Click below to download the electrical wire sizing calculator in Excel format.
Electrical Cable Size Calculator
Final Words
Correct cable sizing is a foundational part of any safe and efficient electrical design. This calculator saves time, reduces human error, and follows standard formulas trusted by professionals worldwide.
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