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Breaker Size Calculator

Step load current up to the next standard breaker size.

Inputs

Inputs and assumptions

Connected load in amps.

Continuous means 3 hours or more. NEC 210.19/215.2 size at 125%. Enter 1 or 0.

Result

Standard breaker size
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Sized load
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What to check

  • Load current
  • Continuous or noncontinuous duty

Related calculators

Screening tool. Verify against the NEC as adopted locally, the AHJ, nameplate data, and metered conditions before acting.

Saved calculations

Keep the assumptions with the result.

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