CEC conductor ampacity calculator
Size conductors with a Canadian wire ampacity calculator that applies CE Code table logic, temperature correction, and bundling derating. Built for feeders and branch circuits where documentation matters.
Related: ampacity plus voltage drop, ampacity and derating guide, voltage drop calculator.
How this calculator works
Select conductor size, material, insulation, ambient temperature, and installation details. The app applies derating steps and reports the resulting ampacity you can compare to load current.
CE Code alignment
The workflow reflects Canadian Electrical Code ampacity practice. Verify table editions, corrections, and any local amendments that apply to your installation.
Run in the app
Sign in to run the conductor ampacity calculator.
FAQ
- How is conductor ampacity determined in Canadian work?
- Ampacity depends on conductor material, insulation temperature rating, ambient conditions, and derating for bundling or other installation factors. A calculator keeps the adjustments organized so the final size matches code tables and project inputs.
- Does the tool apply temperature correction and bundling derating?
- Yes. You can enter the conditions that affect ampacity so the result reflects common Canadian derating scenarios instead of table values alone.
- When should I use ampacity-only versus ampacity plus voltage drop?
- Use ampacity-only when thermal limits are the primary question. Use the combined tool when you also need maximum length or drop limits on the same run.