Motor Calculators & Engineering Tools

Yes — all 20 calculators on this page are free to use, no signup required, and work on any device with a web browser. They’re built and maintained by Electracore for the electric motor industry.

All calculators that reference NEC values (motor FLA, wire ampacity, voltage drop) use the formulas and tables from the latest NEC. For code-required sizing, always verify against the official NEC tables and your local jurisdiction’s amendments. The calculators provide convenience and quick reference — they do not replace a licensed electrician’s review for permitted work.

Three steps: (1) Use the Motor FLA Calculator to get the code-required full-load amps for your motor. (2) Use the Wire Ampacity Calculator to pick conductor size for that current at 1.25× margin. (3) Use the Voltage Drop Calculator to verify the run length stays within 3% drop. Add a breaker sized at 2.5× FLA per NEC 430.52.

Use the Generator Sizing Calculator. It accounts for motor starting current (5–10× running) and demand factor for mixed loads. For motor-heavy facilities, also check the Motor FLA Calculator for each motor’s individual demand.

Yes — every calculator is responsive and works on phones, tablets, and desktops. Field technicians can use them on-site without needing a laptop.

Standard industry references: NEC (NFPA 70) for electrical safety values, NEMA MG-1 for motor specifications, IEEE 141 (Red Book) for industrial power, and ASHRAE for HVAC fan calculations. Each calculator’s page details the specific formula used.

Yes — contact Electracore with your suggestion. We add new calculators based on what motor industry professionals tell us they need most.

Both. NEC (US) and CEC (Canada) are largely aligned for motor circuits and use the same FLA tables. Where regulations differ (notably 600V three-phase, common in Canadian heavy industrial), the calculators handle both standards.