About Mobile Electrician
Basic electrical calculations on your mobile Mobile Electrician is a simple and powerful collection of electrical tools. It helps to save both time and effort while providing accurate results to various calculations. With...
Basic electrical calculations on your mobile Mobile Electrician is a simple and powerful collection of electrical tools. It helps to save both time and effort while providing accurate results to various calculations. With this app you always have all important information at hand! The app includes: Basics: Ohm's law for DC Ohm's law for AC LC Resonance Y-Δ Transformation Electrical Energy Current Density Ideal transformer AC circuits RC snubbers Capacity: Connection of capacitors Capacitive reactance Run a 3 phase motor on a single phase Capacitive Voltage Divider Capacitor Charge / Energy Calculator Decode alphanumeric value Encode alphanumeric value Capacitor to reduce voltage Calculation of discharge time of capacitors Capacitor reactive power Resistance: Connection of resistors Voltage divider LED Resistor Decode the color bands resistors Encode the color bands resistors Wheatstone Bridge Calculator Decode alphanumeric value Encode alphanumeric value Standard Resistor Value Inductance: Connection of inductors Wire Self Inductance Inductive reactance Inductive Voltage Divider Decode the color bands inductors Inductance of an air core inductor Inductance of a solenoid Conductor: Conductor Resistance Conductor length Conductor size Voltage drop Electrical resistivity and conductivity Maximum length of conductor Motor: Calculate Amps Calculate Power Calculate kVA (3 Phase) Calculate Power Factor(3 Phase) Calculate efficiency Calculate of the motor slip Calculate motor torque Individual compensation three-phase induction motors Calculate motor power for centrifugal pump Calculate motor power for piston compressor Calculate motor power for the fan Three-Phase Motor Voltage Unbalance Three-Phase Motor Current Unbalance Motor Protection Standards: Allowable ampacities for wire (NEC,IEC,CEC,PUE,IET,AS/NZS) Wire Size Calculator(NEC,IEC,CEC,PUE,IET,AS/NZS) Motor protection(PUE) Maximum circuit conductor length(NEC,IEC,CEC,PUE,IET,AS/NZS) Maximum circuit ampacity(NEC,IEC,CEC,PUE,IET,AS/NZS) Conduit Fill Calculator(NEC) Others: Minimum levels of short-circuit current Short-circuit current at the secondary terminals of a MV/LV distribution transformer Calculate fuse Power of heating element Heating Element use Nichrome Leakage current Calculation sizing a generator for your home IP Code Appliance classes Force of an Electromagnet Electricity Cost Calculator Calculation of electrical loads applying demand factor UPS Battery size calculator UPS Battery runtime calculator Calculation of transformer rating Generator short circuit fault current Calculation of earthing conductors Compensation to increase the available active power of the transformer Conversion: Conversion Wire sizes Conversion VA-W-VAr and calculate Reactive Power Compensation Conversion cos(φ)-sin(φ)-tg(φ) AWG Conversions Conversion of units of temperature Conversion distance Conversion units of pressure Conversion units of flow Conversion units of volume Conversion voltage Conversion units of energy Conversion SI prefixes Conversion Weight Time Units Conversion Power Units Conversion Cables: Calculate number cables that fits in a pipe Cable Reel Capacity Length of cable on a reel Inductive reactance cable Calculate the weight of the metal in the cable Cable weight by formulas Wiring Color Codes Length of a Hanging Cable Power losses in cable Sizing of protective earthing conductor Calculation history For each calculation is given a separate help Mathematical calculator Percentage calculator Time calculator Online and offline handbook Making reports and screenshots. Save, print and send
Version History Calculation history — revisit any past result Electrician jokes now available in English , Polish,German and French Some other calculations have been updated Other modifications and improvements Bugs fixed. 3.0 Sep 20 New calculations according to the standard have been added(AS/NZS 3008.1.1:2017): Allowable ampacities for wire Wire Size Calculator Maximum circuit conductor length Maximum circuit ampacity Upd. calculations to standards IEC,BSI Some other calculations have been updated Other modifications and improvements Bugs fixed. 2.9 12/06/2025 Added new section IET (BS 7671 ("Requirements for Electrical Installations", IET Wiring Regulations)) Added calculations in new section: Allowable ampacities for wire Wire Size Calculator Maximum circuit conductor length Maximum circuit ampacity In calculations to standards the choice of the number of conductors per phase in parallel has been added Other modifications and improvements Bugs fixed. 2.8 06/03/2025 Added to the Others section: Compensation to increase the available active power of the transformer Added to the Capacitance section: Capacitor reactive power Some calculations have been updated. Other modifications and improvements. Bugs fixed. 2.7 07/10/2023 Added to the Others section: Calculation of earthing conductors Updating IP Code In Resources added: Minimum insulation resistance Some calculations have been updated Other modifications and improvements Bugs fixed. 2.6 01/19/2023 Added section Inductance: Connection of inductors. Wire Self Inductance. Inductive reactance. Inductive voltage divider. Decode the color bands inductors. Inductance of an air core inductor. Inductance of a solenoid. Some calculations have been updated. Other modifications and improvements. Bugs fixed. 2.5 12/10/2021 Updated start screen. Updated time units conversion. Updated section Help. Some calculations have been updated. In section Motor added Calculate Motor protection. In Settings added Keep the screen on. Other modifications and improvements. Bugs fixed. 2.4 03/20/2021 Updated reports. In handbook added some data: Formulas, circuit diagrams, earthing system etc. Search in help. New calculations: Generator short circuit fault current Calculation of discharge time of capacitors Some calculations have been updated Other modifications and improvements. Bugs fixed. 2.3 01/05/2021 Added default values to calculations. The standard values of the cross section are added to some calculations. Added Fahrenheit for ambient temperature. Pressure converter updated. Some calculations have been updated. Other modifications and improvements. Bugs fixed. 2.2 02/23/2020 The program is optimized for iOS 13. Some calculations have been updated. Other modifications and improvements Bugs fixed. 2.1 11/13/2019 Updated calculations by standards. Updated reports. New calculations: Standard Resistor Value. Sizing of protective earthing conductor. Other modifications and improvements. Bugs fixed. 2.0 04/15/2019 Now reports are available for all calculations. Other modifications and improvements. Bugs fixed. 1.9 02/17/2019 Added calculation capacitor to reduce voltage Added calculation of transformer rating Added time calculator Other modifications and improvements Bugs fixed 1.8 12/22/2018 The ability to add comments to your reports. Added calculation RC snubbers. Updated time converter. Updated online handbook. Some calculations have been updated. Other modifications and improvements. Bugs fixed. 1.7 11/08/2018 Viewing information about input fields Some calculations have been updated Other modifications and improvements Bugs fixed. 1.6 07/03/2018 Updated conductor size by formula Some calculations have been updated In "Others" added: UPS Battery size calculator UPS Battery runtime calculator In "Converter" added: Power Units Conversion Added Turkish language for interface Other modifications and improvements Bugs fixed. 1.5 03/15/2018 Find calculation Added dark and light theme Added calculation of electrical loads applying demand factor Some calculations have been updated Other modifications and improvements Bugs fixed. 1.4 02/06/2018 Mobile Electrician is optimized for iOS 11 Some calculations have been updated Other modifications and improvements Bugs fixed. 1.3 11/07/2017 Support RTL languages Added Arabic and Polish languages for interface New Calculation: Calculate AC circuits Power losses in cable Other modifications and improvements Bugs fixed. 1.2 08/21/2017 Interface changes Favorites calculations Some calculations have been updated New Calculation: Generator Sizing Calculator Short-circuit current at the secondary terminals of a MV/LV distribution transformer Power of heating element Force of an Electromagnet Other modifications and improvements Bugs fixed. 1.1 07/10/2017 1.0 03/06/2017
Previous Versions
Here you can find the changelog of Mobile Electrician since it was posted on our website on 2023-07-03 12:13:23.
The latest version is 3.0 and it was updated on 2026-10-06 10:12:33. See below the changes in each version.
Mobile Electrician version 3.0
Updated At: 2026-10-06
Changes: Version History Calculation history — revisit any past result
Electrician jokes now available in English , Polish,German and French
Some other calculations have been updated
Other modifications and improvements
Bugs fixed. 3.0 Sep 20 New calculations according to the standard have been added(AS/NZS 3008.1.1:2017):
Allowable ampacities for wire
Wire Size Calculator
Maximum circuit conductor length
Maximum circuit ampacity
Upd. calculations to standards IEC,BSI
Some other calculations have been updated
Other modifications and improvements
Bugs fixed. 2.9 12/06/2025 Added new section IET (BS 7671 ("Requirements for Electrical Installations", IET Wiring Regulations))
Added calculations in new section:
Allowable ampacities for wire
Wire Size Calculator
Maximum circuit conductor length
Maximum circuit ampacity
In calculations to standards the choice of the number of conductors per phase in parallel has been added
Other modifications and improvements
Bugs fixed. 2.8 06/03/2025 Added to the Others section:
Compensation to increase the available active power of the transformer
Added to the Capacitance section:
Capacitor reactive power
Some calculations have been updated.
Other modifications and improvements.
Bugs fixed. 2.7 07/10/2023 Added to the Others section:
Calculation of earthing conductors
Updating IP Code
In Resources added:
Minimum insulation resistance
Some calculations have been updated
Other modifications and improvements
Bugs fixed. 2.6 01/19/2023 Added section Inductance:
Connection of inductors.
Wire Self Inductance.
Inductive reactance.
Inductive voltage divider.
Decode the color bands inductors.
Inductance of an air core inductor.
Inductance of a solenoid.
Some calculations have been updated.
Other modifications and improvements.
Bugs fixed. 2.5 12/10/2021 Updated start screen.
Updated time units conversion.
Updated section Help.
Some calculations have been updated.
In section Motor added Calculate Motor protection.
In Settings added Keep the screen on.
Other modifications and improvements.
Bugs fixed. 2.4 03/20/2021 Updated reports.
In handbook added some data:
Formulas, circuit diagrams, earthing system etc.
Search in help.
New calculations:
Generator short circuit fault current
Calculation of discharge time of capacitors
Some calculations have been updated
Other modifications and improvements.
Bugs fixed. 2.3 01/05/2021 Added default values to calculations.
The standard values of the cross section are added to some calculations.
Added Fahrenheit for ambient temperature.
Pressure converter updated.
Some calculations have been updated.
Other modifications and improvements.
Bugs fixed. 2.2 02/23/2020 The program is optimized for iOS 13.
Some calculations have been updated.
Other modifications and improvements
Bugs fixed. 2.1 11/13/2019 Updated calculations by standards.
Updated reports.
New calculations:
Standard Resistor Value.
Sizing of protective earthing conductor.
Other modifications and improvements.
Bugs fixed. 2.0 04/15/2019 Now reports are available for all calculations.
Other modifications and improvements.
Bugs fixed. 1.9 02/17/2019 Added calculation capacitor to reduce voltage
Added calculation of transformer rating
Added time calculator
Other modifications and improvements
Bugs fixed 1.8 12/22/2018 The ability to add comments to your reports.
Added calculation RC snubbers.
Updated time converter.
Updated online handbook.
Some calculations have been updated.
Other modifications and improvements.
Bugs fixed. 1.7 11/08/2018 Viewing information about input fields
Some calculations have been updated
Other modifications and improvements
Bugs fixed. 1.6 07/03/2018 Updated conductor size by formula
Some calculations have been updated
In "Others" added:
UPS Battery size calculator
UPS Battery runtime calculator
In "Converter" added:
Power Units Conversion
Added Turkish language for interface
Other modifications and improvements
Bugs fixed. 1.5 03/15/2018 Find calculation
Added dark and light theme
Added calculation of electrical loads applying demand factor
Some calculations have been updated
Other modifications and improvements
Bugs fixed. 1.4 02/06/2018 Mobile Electrician is optimized for iOS 11
Some calculations have been updated
Other modifications and improvements
Bugs fixed. 1.3 11/07/2017 Support RTL languages
Added Arabic and Polish languages for interface
New Calculation:
Calculate AC circuits
Power losses in cable
Other modifications and improvements
Bugs fixed. 1.2 08/21/2017 Interface changes
Favorites calculations
Some calculations have been updated
New Calculation:
Generator Sizing Calculator
Short-circuit current at the secondary terminals of a MV/LV distribution transformer
Power of heating element
Force of an Electromagnet
Other modifications and improvements
Bugs fixed. 1.1 07/10/2017 1.0 03/06/2017
Mobile Electrician version 3.0
Updated At: 2026-09-25
Changes: Version History Calculation history — revisit any past result
Electrician jokes now available in English , Polish,German and French
Some other calculations have been updated
Other modifications and improvements
Bugs fixed. 3.0 4d ago New calculations according to the standard have been added(AS/NZS 3008.1.1:2017):
Allowable ampacities for wire
Wire Size Calculator
Maximum circuit conductor length
Maximum circuit ampacity
Upd. calculations to standards IEC,BSI
Some other calculations have been updated
Other modifications and improvements
Bugs fixed. 2.9 12/06/2025 Added new section IET (BS 7671 ("Requirements for Electrical Installations", IET Wiring Regulations))
Added calculations in new section:
Allowable ampacities for wire
Wire Size Calculator
Maximum circuit conductor length
Maximum circuit ampacity
In calculations to standards the choice of the number of conductors per phase in parallel has been added
Other modifications and improvements
Bugs fixed. 2.8 06/03/2025 Added to the Others section:
Compensation to increase the available active power of the transformer
Added to the Capacitance section:
Capacitor reactive power
Some calculations have been updated.
Other modifications and improvements.
Bugs fixed. 2.7 07/10/2023 Added to the Others section:
Calculation of earthing conductors
Updating IP Code
In Resources added:
Minimum insulation resistance
Some calculations have been updated
Other modifications and improvements
Bugs fixed. 2.6 01/19/2023 Added section Inductance:
Connection of inductors.
Wire Self Inductance.
Inductive reactance.
Inductive voltage divider.
Decode the color bands inductors.
Inductance of an air core inductor.
Inductance of a solenoid.
Some calculations have been updated.
Other modifications and improvements.
Bugs fixed. 2.5 12/10/2021 Updated start screen.
Updated time units conversion.
Updated section Help.
Some calculations have been updated.
In section Motor added Calculate Motor protection.
In Settings added Keep the screen on.
Other modifications and improvements.
Bugs fixed. 2.4 03/20/2021 Updated reports.
In handbook added some data:
Formulas, circuit diagrams, earthing system etc.
Search in help.
New calculations:
Generator short circuit fault current
Calculation of discharge time of capacitors
Some calculations have been updated
Other modifications and improvements.
Bugs fixed. 2.3 01/05/2021 Added default values to calculations.
The standard values of the cross section are added to some calculations.
Added Fahrenheit for ambient temperature.
Pressure converter updated.
Some calculations have been updated.
Other modifications and improvements.
Bugs fixed. 2.2 02/23/2020 The program is optimized for iOS 13.
Some calculations have been updated.
Other modifications and improvements
Bugs fixed. 2.1 11/13/2019 Updated calculations by standards.
Updated reports.
New calculations:
Standard Resistor Value.
Sizing of protective earthing conductor.
Other modifications and improvements.
Bugs fixed. 2.0 04/15/2019 Now reports are available for all calculations.
Other modifications and improvements.
Bugs fixed. 1.9 02/17/2019 Added calculation capacitor to reduce voltage
Added calculation of transformer rating
Added time calculator
Other modifications and improvements
Bugs fixed 1.8 12/22/2018 The ability to add comments to your reports.
Added calculation RC snubbers.
Updated time converter.
Updated online handbook.
Some calculations have been updated.
Other modifications and improvements.
Bugs fixed. 1.7 11/08/2018 Viewing information about input fields
Some calculations have been updated
Other modifications and improvements
Bugs fixed. 1.6 07/03/2018 Updated conductor size by formula
Some calculations have been updated
In "Others" added:
UPS Battery size calculator
UPS Battery runtime calculator
In "Converter" added:
Power Units Conversion
Added Turkish language for interface
Other modifications and improvements
Bugs fixed. 1.5 03/15/2018 Find calculation
Added dark and light theme
Added calculation of electrical loads applying demand factor
Some calculations have been updated
Other modifications and improvements
Bugs fixed. 1.4 02/06/2018 Mobile Electrician is optimized for iOS 11
Some calculations have been updated
Other modifications and improvements
Bugs fixed. 1.3 11/07/2017 Support RTL languages
Added Arabic and Polish languages for interface
New Calculation:
Calculate AC circuits
Power losses in cable
Other modifications and improvements
Bugs fixed. 1.2 08/21/2017 Interface changes
Favorites calculations
Some calculations have been updated
New Calculation:
Generator Sizing Calculator
Short-circuit current at the secondary terminals of a MV/LV distribution transformer
Power of heating element
Force of an Electromagnet
Other modifications and improvements
Bugs fixed. 1.1 07/10/2017 1.0 03/06/2017
Mobile Electrician version 2.9
Updated At: 2026-09-17
Changes: Version History New calculations according to the standard have been added(AS/NZS 3008.1.1:2017):
Allowable ampacities for wire
Wire Size Calculator
Maximum circuit conductor length
Maximum circuit ampacity
Upd. calculations to standards IEC,BSI
Some other calculations have been updated
Other modifications and improvements
Bugs fixed. 2.9 12/06/2025 Added new section IET (BS 7671 ("Requirements for Electrical Installations", IET Wiring Regulations))
Added calculations in new section:
Allowable ampacities for wire
Wire Size Calculator
Maximum circuit conductor length
Maximum circuit ampacity
In calculations to standards the choice of the number of conductors per phase in parallel has been added
Other modifications and improvements
Bugs fixed. 2.8 06/03/2025 Added to the Others section:
Compensation to increase the available active power of the transformer
Added to the Capacitance section:
Capacitor reactive power
Some calculations have been updated.
Other modifications and improvements.
Bugs fixed. 2.7 07/10/2023 Added to the Others section:
Calculation of earthing conductors
Updating IP Code
In Resources added:
Minimum insulation resistance
Some calculations have been updated
Other modifications and improvements
Bugs fixed. 2.6 01/19/2023 Added section Inductance:
Connection of inductors.
Wire Self Inductance.
Inductive reactance.
Inductive voltage divider.
Decode the color bands inductors.
Inductance of an air core inductor.
Inductance of a solenoid.
Some calculations have been updated.
Other modifications and improvements.
Bugs fixed. 2.5 12/10/2021 Updated start screen.
Updated time units conversion.
Updated section Help.
Some calculations have been updated.
In section Motor added Calculate Motor protection.
In Settings added Keep the screen on.
Other modifications and improvements.
Bugs fixed. 2.4 03/20/2021 Updated reports.
In handbook added some data:
Formulas, circuit diagrams, earthing system etc.
Search in help.
New calculations:
Generator short circuit fault current
Calculation of discharge time of capacitors
Some calculations have been updated
Other modifications and improvements.
Bugs fixed. 2.3 01/05/2021 Added default values to calculations.
The standard values of the cross section are added to some calculations.
Added Fahrenheit for ambient temperature.
Pressure converter updated.
Some calculations have been updated.
Other modifications and improvements.
Bugs fixed. 2.2 02/23/2020 The program is optimized for iOS 13.
Some calculations have been updated.
Other modifications and improvements
Bugs fixed. 2.1 11/13/2019 Updated calculations by standards.
Updated reports.
New calculations:
Standard Resistor Value.
Sizing of protective earthing conductor.
Other modifications and improvements.
Bugs fixed. 2.0 04/15/2019 Now reports are available for all calculations.
Other modifications and improvements.
Bugs fixed. 1.9 02/17/2019 Added calculation capacitor to reduce voltage
Added calculation of transformer rating
Added time calculator
Other modifications and improvements
Bugs fixed 1.8 12/22/2018 The ability to add comments to your reports.
Added calculation RC snubbers.
Updated time converter.
Updated online handbook.
Some calculations have been updated.
Other modifications and improvements.
Bugs fixed. 1.7 11/08/2018 Viewing information about input fields
Some calculations have been updated
Other modifications and improvements
Bugs fixed. 1.6 07/03/2018 Updated conductor size by formula
Some calculations have been updated
In "Others" added:
UPS Battery size calculator
UPS Battery runtime calculator
In "Converter" added:
Power Units Conversion
Added Turkish language for interface
Other modifications and improvements
Bugs fixed. 1.5 03/15/2018 Find calculation
Added dark and light theme
Added calculation of electrical loads applying demand factor
Some calculations have been updated
Other modifications and improvements
Bugs fixed. 1.4 02/06/2018 Mobile Electrician is optimized for iOS 11
Some calculations have been updated
Other modifications and improvements
Bugs fixed. 1.3 11/07/2017 Support RTL languages
Added Arabic and Polish languages for interface
New Calculation:
Calculate AC circuits
Power losses in cable
Other modifications and improvements
Bugs fixed. 1.2 08/21/2017 Interface changes
Favorites calculations
Some calculations have been updated
New Calculation:
Generator Sizing Calculator
Short-circuit current at the secondary terminals of a MV/LV distribution transformer
Power of heating element
Force of an Electromagnet
Other modifications and improvements
Bugs fixed. 1.1 07/10/2017 1.0 03/06/2017
Mobile Electrician version 2.9
Updated At: 2025-12-06
Changes: New calculations according to the standard have been added(AS/NZS 3008.1.1:2017):
Allowable ampacities for wire
Wire Size Calculator
Maximum circuit conductor length
Maximum circuit ampacity
Upd. calculations to standards IEC,BSI
Some other calculations have been updated
Other modifications and improvements
Bugs fixed.
Mobile Electrician version 2.8
Updated At: 2025-06-03
Changes: Jun 3, 2025
Version 2.8
Added new section IET (BS 7671 ("Requirements for Electrical Installations", IET Wiring Regulations))
Added calculations in new section:
Allowable ampacities for wire
Wire Size Calculator
Maximum circuit conductor length
Maximum circuit ampacity
In calculations to standards the choice of the number of conductors per phase in parallel has been added
Other modifications and improvements
Bugs fixed.
Mobile Electrician version 2.7
Updated At: 2023-07-10
Changes: Jul 10, 2023
Version 2.7
Added to the Others section:
Compensation to increase the available active power of the transformer
Added to the Capacitance section:
Capacitor reactive power
Some calculations have been updated.
Other modifications and improvements.
Bugs fixed.
Mobile Electrician version 2.6
Updated At: 2023-01-19
Changes: Jan 19, 2023
Version 2.6
Added to the Others section:
Calculation of earthing conductors
Updating IP Code
In Resources added:
Minimum insulation resistance
Some calculations have been updated
Other modifications and improvements
Bugs fixed.
Disclaimer
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