Look up motor FLC from NEC Table 430.250 and calculate wire ampacity and overcurrent protection sizing. Based on the National Electrical Code 2023.
Based on NEC Article 430.250
Motor Full-Load Current (FLC) values are specified in NEC Table 430.250 for three-phase motors. Branch circuit conductors must be sized at 125% of FLC per NEC 430.22, and overcurrent protection is limited to 250% of FLC for inverse-time breakers per NEC 430.52.
This calculator provides estimates for reference purposes only. Results must be verified by a licensed electrician or electrical engineer before any installation.
NEC Reference: NEC 430.22, 430.52, Table 430.250
⚠️ IMPORTANT LEGAL DISCLAIMER
For Reference Only: This calculator is provided for educational and informational purposes only. It is not intended to be a substitute for professional engineering design, advice, or certification.
Code Compliance: Calculations are based on the 2023 National Electrical Code (NEC®). However, local codes, amendments, and Authority Having Jurisdiction (AHJ) requirements vary by location and may supersede standard NEC requirements.
No Liability: SparkShift and its affiliates assume no liability for errors, omissions, or the use/misuse of this tool. Users are solely responsible for verifying all results against applicable codes and standards before installation. Always consult a licensed electrician or engineer.
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