Electricity

Cable Cross-Section Calculator

Calculate the required cable cross-section according to DIN VDE 0298-4 and DIN V...

13.091x used

Recommended

Voltage drop / cable length

Calculate voltage drop in electrical cables. Essential for safe electrical insta...

7.133x used

Recommended

Cable dimensioning

Calculates minimum cross-section and maximum cable length taking into account th...

6.718x used

VDE Voltage Drop Calculator

Calculate voltage drop in electrical cables per DIN VDE 0100-520. Check whether ...

6.650x used

Recommended

Electrical power

Berechnet Wirk-, Schein- and Blindleistung for einphasige and dreiphasige Netze ...

4.547x used

Capacitor calculator

Calculate charge and energy of a capacitor for a given capacitance and voltage.

4.494x used

Calculate maximum cable length

Calculate the maximum cable length for a given voltage drop. For safe electrical...

4.201x used

Resistance calculator

Calculates total resistance for series and parallel connection of up to 3 resist...

3.680x used

Inductance calculator

Calculates the magnetic energy and reactance of a coil for a given inductance, c...

3.637x used

Ohm's law

Ohm's law calculator: Calculate voltage, current, resistance and power. The basi...

3.246x used

Recommended

Three-phase power calculator

Calculate three-phase power: active power, apparent power and current using P = ...

2.934x used

Grounding resistance calculator

Calculate grounding resistance for rod, ring and plate electrodes per IEC 60364.

1.907x used

Transformer calculator

Calculate transformer: turns ratio, currents, losses and core cross-section.

1.844x used

Circuit breaker calculator

Size circuit breakers (MCB): rated current, trip curve B/C/D and cable check to ...

1.758x used

Reactive power compensation

Calculate reactive power compensation: improve cos φ, capacitor sizing and curre...

1.610x used

Cable Ampacity Calculator (with Grouping Factors)

Calculate permissible current-carrying capacity Iz per IEC 60364-5-52 methodolog...

1.219x used

Motor Calculator (Rated Current, Fusing, Supply Cable)

Calculate rated current, starting current, overload protection setting, back-up ...

1.150x used

Short-Circuit Current Calculator (Loop Impedance)

Calculate the prospective fault current Ik from the measured loop impedance Zs a...

1.110x used

PV String Calculator (Inverter Sizing)

Size PV strings correctly: check open-circuit voltage at low temperature against...

1.004x used

Lighting Calculator (Lumen, Lux, Number of Luminaires)

How many luminaires does the room need? Calculate luminous flux demand and numbe...

904x used

EV Charger Calculator (Charging Time, Cable, Fusing)

Calculate EV charging time plus supply cable cross-section, fusing and RCD requi...

873x used

Minimum Cable Cross-Section for Short-Circuit (Adiabatic)

Calculate the thermally required minimum conductor cross-section during a short ...

51x used

Protective Conductor (PE) Cross-Section Calculator

Calculate the minimum protective earth (PE) conductor cross-section from the lin...

49x used

Battery Storage Sizing (PV Home Storage)

Technical sizing of a PV home battery: nominal capacity, usable capacity, charge...

42x used

Selectivity / Discrimination of Protective Devices

Estimate the selectivity (discrimination) of two series protective devices via t...

39x used

PV Yield Calculator (kWp → kWh/year)

Technical PV annual yield from system size (kWp), specific yield, orientation an...

33x used

Motor Starting Current & Star-Delta

Rated and starting current of a three-phase motor, comparing direct-on-line with...

30x used

Voltage Drop DC (12/24/48 V, PV)

Voltage drop for direct current across the outgoing and return conductor for low...

25x used