Cable Rating And Derating Factor

At the heart of cable selection lies two critical concepts: (Ampacity) and Derating Factors .

A cable rated for 100A under NEC (30°C) might be rated for only 92A under IEC (40°C). Always check your local code. cable rating and derating factor

| Ambient Temp (°C) | Correction Factor (90°C Cable) | | :--- | :--- | | 30 (Base) | 1.00 | | 40 | 0.91 | | 50 | 0.82 | | 60 | 0.71 | | 70 | 0.58 | At the heart of cable selection lies two

Proper calculation prevents over-engineering (buying cables that are too large) or under-engineering (system failure). cable rating and derating factor