SPECIFICATION SHEET β’ SI METRIC
CAT: ELECTRICAL-ENERGY
Motor Current Estimation
Calculate full-load line current (FLA) for 3-phase induction electric motors based on power rating and voltage.
π‘ Engineering Knowledge PrimerFull-Load Amperes (FLA) represents the continuous line current drawn by an electric motor operating at rated power and voltage. Sizing electrical cables, contactors, and circuit breakers requires accurate FLA calculation based on motor nameplate efficiency.
CALCULATION SCOPE β Deterministic calculation within the published assumptions. Independently verify all design decisions and project-specific code requirements.
INPUT DESIGN PARAMETERS (SI)
kW
V
%
1
CALCULATED SPECIFICATION OUTPUT
Full-Load Current (FLA)
β‘132.4 A
Related planning checklists
This calculator appears in the following engineering planning checklists:
Industrial Electrical Load & Transformer Sizing
Electrical Engineer1. Three-Phase Electrical Power2. Motor Current Estimation3. Transformer kVA Rating & Load Sizing (IEC 60076)4. Plant Energy Consumption & Cost
Compressed-Air Energy Audit
Energy Auditor1. Compressed-Air Demand Sizing2. Compressed-Air Compressor Power3. Motor Current Estimation4. Plant Energy Consumption & Cost5. Industrial CO2 Carbon Emissions
Technical Methodology & Engineering Principles
GOVERNING EQUATION
FLA (A) = [ Power (kW) Γ 1000 ] / [ β3 Γ V Γ (Ξ·/100) Γ cos Ο ]
Assumptions & Scope
Standard 3-phase squirrel cage induction motor.
Operating Range & Boundary
Use finite, physically meaningful inputs within the stated operating assumptions.
Peer Reference: NFPA 70: National Electrical Code (NEC 2023), Table 430.250.