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

ସୂତ୍ର

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

ଷ୍ଟେପ୍-ଷ୍ଟେପ୍ ଗାଇଡ୍ |

  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

ସମାଧାନ ହୋଇଥିବା ଉଦାହରଣ

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

ଏଡ଼ାଇବା ଯୋଗ୍ୟ ସାଧାରଣ ଭୁଲ

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

ସେଟିଂ