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Πώς να υπολογίσετε το Circuit Breaker Sizing

Τι είναι το Circuit Breaker Sizing;

Circuit Breaker Size Calculator helps contractors and tradespeople accurately size, spec, and estimate materials and systems.

Τύπος

Breaker Size = Load Watts / Voltage × 1.25 (125% NEC rule)

Οδηγός βήμα προς βήμα

  1. 1Calculate total load in watts, divide by voltage, multiply by 1.25
  2. 2Apply the formula using your project measurements
  3. 3Add required safety factors or waste allowances per code

Worked Examples

Εισαγωγή
2400W load, 120V circuit
Αποτέλεσμα
Breaker = 2400/120 × 1.25 = 25A → use 30A breaker

Common Mistakes to Avoid

  • Not applying code-required safety factors or derating
  • Forgetting to account for waste and cut losses in material estimates

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