Electrical Engineering Calculators & Tools
Power System Calculations
Power Factor Calculator
Calculate required capacitor bank sizes (kVAR) for power factor correction and network optimization.
kVA to Amps Calculator
Convert apparent power (kVA) to Full Load Amps (FLA) for transformer and equipment sizing.
Current Calculator
Calculate single and three-phase line current (Amps) based on power, voltage, and power factor.
Transformer Size Calculator
Estimate total facility kVA required and snap to standard ANSI/IEC transformer capacities.
Short Circuit Current Calculator
Estimate available fault current (Isc) at the transformer secondary using the infinite bus method.
Cable & Conductor Calculations
Cable Size Calculator
Estimate required copper or aluminum cable cross-section (mm²) based on ampacity and voltage drop.
Voltage Drop Calculator
Calculate absolute voltage loss and percentage drop over long cable runs for AC circuits.
Busbar Size Calculator
Determine required rectangular busbar dimensions and parallel runs for panelboards based on load.
Creepage Distance Calculator
Calculate required creepage distances and clearances for MV/HV insulators based on IEC pollution levels.
Protection & Equipment Selection
Breaking Capacity Guide Tool
Guideline for selecting proper Circuit Breaker ratings (Icu, Icm) based on prospective fault levels.
CT Ratio Calculator
Select the ideal Current Transformer (CT) ratio based on load current and determine meter multipliers.
PT / VT Ratio Calculator
Find Voltage Transformer (PT/VT) multipliers for configuring energy meters and protection relays.
IP Rating Finder
Select correct NEMA/IP ingress protection levels based on environmental conditions (IEC 60529).
Wall Bushing Derating
Calculate combined derating factors (temperature, grouping, THD, material) to determine required capacity.
Humidity & Dew Point Calculator
Evaluate condensation risks on electrical distribution cabinet components and enclosure walls.