EngineerHub category // Electrical
Electrical Engineering
Work with circuits, cables, transformers, motors and power-system parameters, or visualize waveforms, magnetic fields, induction and transformer core behaviour.
18 calculator / tools10 interactive simulators2 study materials30 pages total
This electrical-engineering collection spans practical calculation and conceptual visualization. It includes circuit and cable sizing, transformer performance, fault current, motor current, voltage drop and power factor, together with interactive electromagnetic and AC waveform simulations. The tools are designed to support study, checking and preliminary engineering work.
Choose a tool below by purpose. Individual pages include their own assumptions, equations, references and limitations where applicable.
Calculators & tools
18 pages
Advanced Transformer CalculatorCalculate transformer kVA, primary and secondary current, efficiency, losses, regulation, turns, conductor size, fault current and preliminary geometry.→Cable Ampacity & Derating CalculatorLook up NEC Table 310.16 base ampacity for copper or aluminum conductors, then apply ambient temperature correction and conductor bundling adjustment factors.→Cable Sizing CalculatorSize copper or aluminum power cables using load current, derated ampacity, voltage drop and short-circuit checks in SI and US Customary units.→Circuit Load CalculatorEstimate electrical circuit load, current and capacity for preliminary engineering checks with EngineerHub.→Electrical Power CalculatorCalculate kW, kVA, kvar and useful output for DC, single-phase and balanced three-phase circuits from voltage, current and power factor.→Home Main Fuse & EV Charger CalculatorCheck whether an EV charger, heat pump, sauna and other loads fit your home electrical service. Supports European 230/400 V, UK and North American 120/240 V systems.→IEC 60909 Short-Circuit CalculatorDetailed IEC 60909-0:2016 short-circuit calculator with source, transformer, line, fault impedance, peak current, thermal current and 1φ/2φ/3φ fault options.→LED Resistor CalculatorCalculate the correct LED series resistor, next-higher E12 value, resistor wattage and total current for single LEDs or series and parallel branches.→Ohm's Law CalculatorSolve Ohm's law from any two known values. Calculate voltage, current, resistance, power, energy use, cost, and series or parallel resistance.→Power Factor Correction CalculatorCalculate required capacitor-bank kvar, current reduction, kVA reduction and per-phase capacitance for single- or three-phase systems.→Series & Parallel Resistance CalculatorBuild and calculate series-parallel resistor circuits. Find equivalent resistance, total current, branch current, voltage drop and resistor power.→Three-Phase Motor Current CalculatorCalculate three-phase motor full-load current from power, voltage, power factor and efficiency, with optional NEMA MG 1 code-letter or IEC 60034-12 manufacturer-ratio starting-current…→Transformer CalculatorCalculate transformer turns ratio, primary and secondary rated current, load current, real power, losses, efficiency, and impedance-limited fault current.→Transformer Cooling CalculatorCalculate transformer air, oil and water cooling flow, heat-transfer area, auxiliary power and temperature-rise screening for AN, AF, ONAN, ONAF, OFAF and OFWF.→Transformer Fault Current CalculatorEstimate available short-circuit (fault) current at a transformer's secondary terminals from its rated kVA, voltage and percent impedance.→Transformer Turns Ratio CalculatorCalculate transformer turns ratio, secondary turns, primary current and VA from primary and secondary voltage, turns, load current and efficiency.→Transmission Line Parameter CalculatorCalculate overhead transmission line inductance, capacitance, characteristic impedance and surge impedance loading (SIL) from conductor GMR, spacing and line length.→Voltage Drop CalculatorCalculate voltage drop, percentage loss and load-end voltage for copper or aluminium wiring using mm² or AWG conductor sizes.→
Interactive simulators
10 pages
AC Waveform & Phasor Diagram SimulatorInteractive AC simulator for ideal series/parallel RLC circuits, resonance and balanced three-phase phasors, with synchronized phasor and normalized waveform visuals.→Eddy Current & Magnetic Braking SimulatorExplore eddy current braking with interactive copper-tube, rotating-disc, speed-decay and skin-depth simulations. Adjust field, metal, thickness and speed.→Electric Field VisualizerInteractive electric field visualizer for point charges. Drag charges and a probe, view field vectors, field lines and equipotential contours, and explore Coulomb's law and electric…→Electrical Grid Frequency SimulatorInteractive electrical grid frequency simulator for learning inertia, RoCoF, governor droop, AGC, spinning reserve, load shedding, generator commitment and N-1 security.→Electromagnetic Induction / Faraday SimulatorInteractive electromagnetic induction and Faraday's law simulator. Explore moving magnets and coils, changing magnetic fields, generators, motional EMF, transformers and induction braking…→Electromagnetic Solenoid Force SimulatorInteractive solenoid force simulator for air-gap force, magnetic saturation, spring pull-in, RL response time, coil resistance and heating.→Magnetic Field ModelAdvanced interactive magnetic field visualizer for current-carrying wires, circular coils, finite solenoids, Helmholtz coils and magnetic dipoles. Explore field vectors, field lines,…→Magnetic Levitation & Diamagnetism SimulatorSee what it takes to float a diamagnet: field gradient against gravity, the threshold field, why Earnshaw forbids stable permanent-magnet levitation, and how a superconductor gets round it…→Power Transmission SimulatorCompare HVAC and HVDC lines, calculate current and losses, model transformer efficiency, and explore substation busbar switching in one visual simulator.→Transformer Core Saturation & Hysteresis SimulatorInteractive transformer core saturation simulator for V/Hz, B–H hysteresis, magnetising current, energisation inrush and normalized core-loss behaviour.→
Study materials
2 pages
Electrical Engineering Formula SheetElectrical engineering formula sheet covering Ohm's law, series and parallel resistance, DC/AC power, RLC impedance, power factor, three-phase power, voltage drop and transformer ratios.→Learn Electrical EngineeringA complete educational electrical engineering guide: Ohm's law, series and parallel circuits, power, AC fundamentals, three-phase power, transformers, and how it all connects to the grid.→