Electrical Engineering Tools

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Transformer Sizing Calculator | Load, Diversity & Growth

Select transformer rating based on connected load, power factor, diversity, future growth, and safety margin with IEC standard ratings.

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LV Short Circuit Calculator | IEC 60909 Fault Current

Estimate symmetrical short-circuit current at transformer and load end considering transformer impedance, voltage factor, and downstream cable.

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Voltage Drop Calculator | mV/A/m Method IEC & BS

Calculate voltage drop, percentage loss, and load-end voltage using the mV/A/m method for LV cables in compliance with IEC and BS standards.

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UPS Battery Sizing Calculator | IEEE 485 Capacity Method

Calculate UPS battery capacity considering load kW, autonomy time, inverter efficiency, aging margin, temperature derating, and discharge rate.

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Cable Tray Fill Calculator | Width, Weight & Spare Capacity

Size cable trays using area fill and single-layer width methods. Calculate required tray width, weight check, fill ratio, and future spare capacity.

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Cable Sizing Calculator | Voltage Drop & Ampacity IEC 60364

Select cable size based on load current, voltage drop, route length, system phase, and conductor material in compliance with IEC 60364.

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Breaker & Fuse Sizing Calculator | IEC Protection Checks

Size MCB, MCCB, or fuse ratings by verifying load current, thermal setting, and short-circuit breaking capacity as per IEC practices.

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Power Factor Correction Calculator | Capacitor kVAr Sizing

Determine required capacitor kVAr to improve power factor, reduce current, and optimize electrical systems based on load kW and PF targets.

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Motor Current Calculator | 1-Phase & 3-Phase IEC Method

Calculate full load current, starting current, and kVA for single-phase and three-phase motors using power, voltage, efficiency, and power factor.

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Earthing Resistance Calculator | Earth Rod & Soil Resistivity

Estimate earthing resistance for single and multiple earth rods using soil resistivity, rod length, diameter, and arrangement as per BS 7430.

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Earth Conductor Sizing Calculator | Adiabatic Method IEC 60364

Calculate minimum earth conductor cross-section using the adiabatic equation based on fault current, clearance time, material, and insulation per IEC 60364-5-54

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