Conductor ampacity plus voltage drop (Canada)
Use one Canadian electrical wire sizing calculator that combines ampacity, temperature correction, bundling derating, and voltage drop for feeders and branch circuits—aligned with CE Code practice.
Related: conductor ampacity calculator, voltage drop calculator, conductor sizing article.
How this calculator works
Enter load current, circuit length, voltage, and installation conditions. The app evaluates ampacity after derating and compares it to drop limits so you pick a conductor that satisfies both.
CE Code alignment
The combined checks follow Canadian Electrical Code conventions for ampacity and practical drop review. Confirm final limits with your specification and AHJ.
Run in the app
Sign in to run the combined conductor sizing calculator.
FAQ
- What does the combined ampacity and voltage drop calculator solve?
- It ties thermal ampacity limits to voltage drop on the same conductor run so you can see when a larger wire is required for drop even though ampacity alone would be sufficient.
- Is this the same as the standalone voltage drop tool?
- The combined workflow is optimized for sizing decisions that must satisfy both ampacity derating and drop limits. Use the standalone voltage drop page when you only need drop estimates.
- Can I export results?
- Yes. Inside Current Systems you can save runs and export PDF reports for project files.