About Electrical Calculations
Electrical Calculations is professional calculation software designed for installers, designers, and electricians. It is a versatile and reliable tool, capable of generating clear and informative reports in PDF and...
Electrical Calculations is professional calculation software designed for installers, designers, and electricians. It is a versatile and reliable tool, capable of generating clear and informative reports in PDF and printable formats. Supported standards: IEC (International Electrotechnical Commission), CEI (Comitato Elettrotecnico Italiano), NEC (National Electrical Code), CEC (Canadian Electrical Code). The application offers a wide range of calculations for the fundamental aspects of an electrical system, wiring diagrams, and formulas. Main calculations: Wire size, voltage drop, current, voltage, active / apparent / reactive power, power factor, resistance, Maximum wire length, Current carrying capacity of insulated conductors / bare conductors / busbar, Conduit fill, Sizing the circuit breaker, Admissible let-through energy of the cable (K²S²), Operating current, Reactance, Impedance, Power factor correction, Power factor correction of transformer MV/LV, Capacitor power at different voltage, Earthing system, Short circuit current, Conductor resistance, Calculation of the cable temperature, Power losses in cables, Neutral current, Temperature sensors (PT/NI/CU, NTC, Thermocouples...), Analog signal values, Joule effect, Fault current of strings, Risk assessment of overvoltages with atmospheric origin. Electronic calculations: Resistor / Inductor color code, Fuses, Sum resistors / capacitors, Resonant frequency, Voltage divider, Current divider, Zener diode as voltage stabiliser, Resistance to reduce voltage, Resistance for led, Battery life, Primary/Secondary winding of transformer, Antenna length, CCTV Harddrive/Bandwidth calculator. Calculations concerning the motor: Efficiency, Motor from three-phase to single-phase, Capacitor start motor single-phase, Motor speed, Motor slip, Maximum torque, Full-load current, Diagrams of the three-phase motor, Insulation class, Motor connections, Motor terminals marking. Conversions: Δ-Y, Power, AWG/mm²/SWG table, Imperial / metric conductor size comparison, Section, Length, Voltage (Amplitude), sin/cos/tan/φ, Energy, Temperature, Pressure, Ah/kWh, VAr/µF, Gauss/Tesla, RPM-rad/s-m/s, Frequency / Angular velocity, Torque, Byte, Angle. Resources: Fuses application categories, UL/CSA fuse class, Standard resistor values, Tripping curves, Table of cables reactance, Table of resistivity and conductivity, Table of unitary voltage drop, Dimensions and weight of cables, Power distribution systems (TT, TN, IT), IP/IK/NEMA protection classes, Atex marking, Appliance classes, CCTV resolutions, Thermocouple colour codes and data, ANSI standard device numbers, Electrical symbols, Electricity around the world, Plug and socket types, IEC 60320 connectors, C-Form Sockets (IEC 60309), Nema connectors, EV charging plugs, Wiring color codes, SI Prefixes, Units of measurement, Pipes dimensions. Pinouts: Ethernet wiring (RJ-45), Ethernet with PoE, RJ-9/11/14/25/48, Scart, USB, HDMI, VGA, DVI, RS-232, FireWire (IEEE1394), Molex, Sata, Apple Lightning, Apple Dock Connector, DisplayPort, PS/2, Fiber optic color code, led, Raspberry PI, ISO 10487 (Car audio), OBD II, XLR (Audio/DMX), MIDI, Jack, RCA color coding, Thunderbolt, SD Card, Sim Card, Display LCD 16x2, IO-Link. The app also contains a very useful form. Terms of service (EULA): https://www.egalnetsoftwares.com/terms_of_service_app/
Version History * ReFix: Crash in some converters * Fix: Crash in "UL/CSA Fuse Ratings" on iPad 9.0.8 May 7 * Fix: Crash in some converters 9.0.7 May 6 * Mod: Differentiation between HP (Imperial Horsepower) and CV (Metric Horsepower) * Fix: Selecting the type of installation in "Wire size with distributed loads (IEC)" * Fix: Added flowchart to wire size calculation formulas * Fix: Checking the ampacity when calculating the maximum cable length with voltage drop * Mod: Improved TableView efficiency 9.0.6 May 5 * Mod: Improved calculation of the bars ampacity * Mod: Improved IEC protection device selection when using fuses with rated current less than 16A * Add: Guide on safe operating currents for circuit breakers and fuses * Add: Support for IEC circuit breakers up to 6300 * Mod: Single power factor in settings * Fix: Corrected the layout "size and weight" of NEC cables * Upd: Arabic language (by Abd Al Aziz) * Upd: General update of the languages 9.0.5 Mar 3 * Imp: The standard is automatically selected (when possible) * Imp: Together with the type of installation, the type of cable (single-core / multi-core) is also shown * Upd: Updated some external libraries * Upd: Chatbot model updated to Gemini 2.5 * Upd: Russian language (by Djek-Energetik) * Upd: Macedonian language (by Dragančo Velkov) * Upd: General update of the languages 9.0.4 Jan 12 * Fix: Crash when selecting CEC standard in channel fill calculation 9.0.3 11/07/2025 * Mod: Improved data (size and weight) for CEI, IEC, and harmonized cables * Mod: Channel fill calculation now fully supports the CEI standard * Upd: Macedonian language (by Dragančo Velkov) 9.0.2 11/05/2025 * Upd: General update of the languages 9.0.1 09/30/2025 * Add: Full compatibility with iOS 26 * Fix: Updating of available wire sizes based on the type of installation when choosing the CEI protection device * Fix: Fixed a crash when calculating voltage drop with distributed loads using a multicore cable * Upd: Arabic language (by Majed Al-Shagdari) * Upd: Russian language (by Djek-Energetik) * Upd: Persian language (by Sajad Sahragard) * Upd: General update of the languages 9.0.0 09/22/2025 * New: The app now supports CEI standards in addition to the international IEC ones * New: Voltage drop calculation with equally distributed loads * New: Wire size calculation with equally distributed loads * New: Possibility to select 4 loaded conductors in the current carrying capacity calculation * Mod: Improved ground resistance calculation * Mod: Copper resistivity is now set to 0.01851 Ω*mm²/m for short-circuit current calculations * Fix: Ads volume * Upd: Macedonian language (by Dragančo Velkov) * Upd: Arabic language (by Hamad Houcine and هزيم الرعد) * Upd: Simplified Chinese language (by Jeven) * Upd: Romanian language (by Pătrașcu Laurențiu) 8.0.0 09/15/2025 * Mod: Minor graphic improvements * Upd: General update of the languages 7.5.2 07/15/2025 * Fix: Viewing the Tab Bar on iPad 7.5.1 06/24/2025 * New: Calculation of the maximum length of the cable protected from short-circuit * New: Device acronyms * Mod: The default load surcharge is now set to 0% to avoid oversizing the cable * Fix: Settings row height * Upd: Macedonian language (by Dragančo Velkov) * Upd: Arabic language (by Majed Al-Shagdari) 7.5.0 06/23/2025 * Upd: The guide is now also translated into other languages 7.4.3 06/11/2025 * Fix: The conductor resistance calculation did not take frequency into account * Upd: Updated some external libraries * Upd: Tamil language (by Tamizharasan) * Upd: Portuguese [BR] language (by Murillo Gumiero) * Upd: Polish language (by Adamszopki) * Upd: General update of the languages 7.4.2 05/26/2025 * Mod: Improved unit voltage drop table * Mod: Improved IEC cable reactance table * Mod: Improved cable resistance / reactance / impedance calculation * Mod: Improved images of tripping curves * Mod: Improved and expanded IEC electrical symbols * Fix: Tripping curves with dark theme * Upd: Arabic language (by Majed Al-Shagdari) * Upd: Macedonian language (by Dragančo Velkov) * Upd: Tamil language (by Tamizharasan) * Upd: Portuguese [BR] language (by Murillo Gumiero) * Upd: Hebrew language (by Arken) * Upd: General update of the languages 7.4.1 05/05/2025 * New: Protection for emergency lighting lines 7.4.0 04/01/2025 * Fix: Fixed keyboard distance from safe area * Mod: Improved guidance on full load current of motors (NEC) 7.3.1 03/18/2025 * Add: Ability to search for installation method by name or description * Mod: Small improvements * Mod: Bottom sheet * Add: Support for floating keyboard * Mod: Improved license captions * Mod: Migration to Gemini 2.0 for chatbot * Mod: The terms of service are more prominent * Upd: Traditional Chinese language (by king) * Upd: Macedonian language (by Dragančo Velkov) * Upd: General update of the languages 7.3.0 03/10/2025 * Mod: Improved the calculation of the design current * Upd: Updated some external libraries 7.2.3 01/08/2025 * Fix: Reduced neutral and protection conductors in parallel when exceeding 6000A (NEC and CEC) * Fix: Displaying awg sizes in the picker * Mod: Improved purchase management * Upd: Simplified Chinese language (by wangwei) * Upd: Macedonian language (by Dragančo Velkov) 7.2.2 12/09/2024 * Fix: Crash when selecting an installation type when choosing a protective device * Fix: Crash when showing multiple conductors in parallel in advanced section calculation * Fix: Crash when the NEC wire size calculation results a neutral wire greater than 2000 kcmil * Upd: General update of the languages 7.2.1 11/28/2024 * New: Calculation of wire size and coordination of protection device * Add: Flowchart in wire size calculation formula * Mod: The short-circuit cosφ is automatically displayed when setting the upstream short-circuit current * Mod: Improved formula for selecting NEC/CEC protection device * Mod: Improved awg/kcmil conductor resistance calculation * Fix: In NEC/CEC calculations continuous loads or non-continuous loads can accept the value 0 * Fix: Reduction factor for conductors in parallel NEC/CEC * Fix: Calculated load according to Rule 8-104 (CEC) * Upd: Macedonian language (by Dragančo Velkov) * Upd: Arabic language (by Majed Al-Shagdari) * Upd: Czech language (by Skipy) * Upd: General update of the languages 7.2.0 11/25/2024 * Fix: Crash when viewing an advertisement 7.1.1 10/22/2024 * New: Cable protection from short-circuit * Mod: Improved calculation of minimum short-circuit current * Mod: Dark and Tint app icon * Mod: Improved some bar button icons * Fix: Closing interstitial ads * Add: Albanian and Uzbek languages * Upd: AdMob SDK 7.1.0 10/21/2024
Previous Versions
Here you can find the changelog of Electrical Calculations since it was posted on our website on 2021-12-14 11:43:23.
The latest version is 9.0.8 and it was updated on 2026-06-06 22:55:33. See below the changes in each version.
Electrical Calculations version 9.0.8
Updated At: 2026-06-06
Changes: Version History * ReFix: Crash in some converters
* Fix: Crash in "UL/CSA Fuse Ratings" on iPad 9.0.8 May 7 * Fix: Crash in some converters 9.0.7 May 6 * Mod: Differentiation between HP (Imperial Horsepower) and CV (Metric Horsepower)
* Fix: Selecting the type of installation in "Wire size with distributed loads (IEC)"
* Fix: Added flowchart to wire size calculation formulas
* Fix: Checking the ampacity when calculating the maximum cable length with voltage drop
* Mod: Improved TableView efficiency 9.0.6 May 5 * Mod: Improved calculation of the bars ampacity
* Mod: Improved IEC protection device selection when using fuses with rated current less than 16A
* Add: Guide on safe operating currents for circuit breakers and fuses
* Add: Support for IEC circuit breakers up to 6300
* Mod: Single power factor in settings
* Fix: Corrected the layout "size and weight" of NEC cables
* Upd: Arabic language (by Abd Al Aziz)
* Upd: General update of the languages 9.0.5 Mar 3 * Imp: The standard is automatically selected (when possible)
* Imp: Together with the type of installation, the type of cable (single-core / multi-core) is also shown
* Upd: Updated some external libraries
* Upd: Chatbot model updated to Gemini 2.5
* Upd: Russian language (by Djek-Energetik)
* Upd: Macedonian language (by Dragančo Velkov)
* Upd: General update of the languages 9.0.4 Jan 12 * Fix: Crash when selecting CEC standard in channel fill calculation 9.0.3 11/07/2025 * Mod: Improved data (size and weight) for CEI, IEC, and harmonized cables
* Mod: Channel fill calculation now fully supports the CEI standard
* Upd: Macedonian language (by Dragančo Velkov) 9.0.2 11/05/2025 * Upd: General update of the languages 9.0.1 09/30/2025 * Add: Full compatibility with iOS 26
* Fix: Updating of available wire sizes based on the type of installation when choosing the CEI protection device
* Fix: Fixed a crash when calculating voltage drop with distributed loads using a multicore cable
* Upd: Arabic language (by Majed Al-Shagdari)
* Upd: Russian language (by Djek-Energetik)
* Upd: Persian language (by Sajad Sahragard)
* Upd: General update of the languages 9.0.0 09/22/2025 * New: The app now supports CEI standards in addition to the international IEC ones
* New: Voltage drop calculation with equally distributed loads
* New: Wire size calculation with equally distributed loads
* New: Possibility to select 4 loaded conductors in the current carrying capacity calculation
* Mod: Improved ground resistance calculation
* Mod: Copper resistivity is now set to 0.01851 Ω*mm²/m for short-circuit current calculations
* Fix: Ads volume
* Upd: Macedonian language (by Dragančo Velkov)
* Upd: Arabic language (by Hamad Houcine and هزيم الرعد)
* Upd: Simplified Chinese language (by Jeven)
* Upd: Romanian language (by Pătrașcu Laurențiu) 8.0.0 09/15/2025 * Mod: Minor graphic improvements
* Upd: General update of the languages 7.5.2 07/15/2025 * Fix: Viewing the Tab Bar on iPad 7.5.1 06/24/2025 * New: Calculation of the maximum length of the cable protected from short-circuit
* New: Device acronyms
* Mod: The default load surcharge is now set to 0% to avoid oversizing the cable
* Fix: Settings row height
* Upd: Macedonian language (by Dragančo Velkov)
* Upd: Arabic language (by Majed Al-Shagdari) 7.5.0 06/23/2025 * Upd: The guide is now also translated into other languages 7.4.3 06/11/2025 * Fix: The conductor resistance calculation did not take frequency into account
* Upd: Updated some external libraries
* Upd: Tamil language (by Tamizharasan)
* Upd: Portuguese [BR] language (by Murillo Gumiero)
* Upd: Polish language (by Adamszopki)
* Upd: General update of the languages 7.4.2 05/26/2025 * Mod: Improved unit voltage drop table
* Mod: Improved IEC cable reactance table
* Mod: Improved cable resistance / reactance / impedance calculation
* Mod: Improved images of tripping curves
* Mod: Improved and expanded IEC electrical symbols
* Fix: Tripping curves with dark theme
* Upd: Arabic language (by Majed Al-Shagdari)
* Upd: Macedonian language (by Dragančo Velkov)
* Upd: Tamil language (by Tamizharasan)
* Upd: Portuguese [BR] language (by Murillo Gumiero)
* Upd: Hebrew language (by Arken)
* Upd: General update of the languages 7.4.1 05/05/2025 * New: Protection for emergency lighting lines 7.4.0 04/01/2025 * Fix: Fixed keyboard distance from safe area
* Mod: Improved guidance on full load current of motors (NEC) 7.3.1 03/18/2025 * Add: Ability to search for installation method by name or description
* Mod: Small improvements
* Mod: Bottom sheet
* Add: Support for floating keyboard
* Mod: Improved license captions
* Mod: Migration to Gemini 2.0 for chatbot
* Mod: The terms of service are more prominent
* Upd: Traditional Chinese language (by king)
* Upd: Macedonian language (by Dragančo Velkov)
* Upd: General update of the languages 7.3.0 03/10/2025 * Mod: Improved the calculation of the design current
* Upd: Updated some external libraries 7.2.3 01/08/2025 * Fix: Reduced neutral and protection conductors in parallel when exceeding 6000A (NEC and CEC)
* Fix: Displaying awg sizes in the picker
* Mod: Improved purchase management
* Upd: Simplified Chinese language (by wangwei)
* Upd: Macedonian language (by Dragančo Velkov) 7.2.2 12/09/2024 * Fix: Crash when selecting an installation type when choosing a protective device
* Fix: Crash when showing multiple conductors in parallel in advanced section calculation
* Fix: Crash when the NEC wire size calculation results a neutral wire greater than 2000 kcmil
* Upd: General update of the languages 7.2.1 11/28/2024 * New: Calculation of wire size and coordination of protection device
* Add: Flowchart in wire size calculation formula
* Mod: The short-circuit cosφ is automatically displayed when setting the upstream short-circuit current
* Mod: Improved formula for selecting NEC/CEC protection device
* Mod: Improved awg/kcmil conductor resistance calculation
* Fix: In NEC/CEC calculations continuous loads or non-continuous loads can accept the value 0
* Fix: Reduction factor for conductors in parallel NEC/CEC
* Fix: Calculated load according to Rule 8-104 (CEC)
* Upd: Macedonian language (by Dragančo Velkov)
* Upd: Arabic language (by Majed Al-Shagdari)
* Upd: Czech language (by Skipy)
* Upd: General update of the languages 7.2.0 11/25/2024 * Fix: Crash when viewing an advertisement 7.1.1 10/22/2024 * New: Cable protection from short-circuit
* Mod: Improved calculation of minimum short-circuit current
* Mod: Dark and Tint app icon
* Mod: Improved some bar button icons
* Fix: Closing interstitial ads
* Add: Albanian and Uzbek languages
* Upd: AdMob SDK 7.1.0 10/21/2024
Electrical Calculations version 9.0.5
Updated At: 2026-03-03
Changes: * Mod: Improved calculation of the bars ampacity
* Mod: Improved IEC protection device selection when using fuses with rated current less than 16A
* Add: Guide on safe operating currents for circuit breakers and fuses
* Add: Support for IEC circuit breakers up to 6300
* Mod: Single power factor in settings
* Fix: Corrected the layout "size and weight" of NEC cables
* Upd: Arabic language (by Abd Al Aziz)
* Upd: General update of the languages
Electrical Calculations version 9.0.4
Updated At: 2026-01-12
Changes: * Imp: The standard is automatically selected (when possible)
* Imp: Together with the type of installation, the type of cable (single-core / multi-core) is also shown
* Upd: Updated some external libraries
* Upd: Chatbot model updated to Gemini 2.5
* Upd: Russian language (by Djek-Energetik)
* Upd: Macedonian language (by Dragančo Velkov)
* Upd: General update of the languages
Electrical Calculations version 9.0.1
Updated At: 2025-09-30
Changes: Sep 30, 2025
Version 9.0.1
* Upd: General update of the languages
Electrical Calculations version 7.5.2
Updated At: 2025-07-15
Changes: Jul 15, 2025
Version 7.5.2
* Mod: Minor graphic improvements
* Upd: General update of the languages
Electrical Calculations version 7.4.2
Updated At: 2025-05-26
Changes: May 26, 2025
Version 7.4.2
* Fix: The conductor resistance calculation did not take frequency into account
* Upd: Updated some external libraries
* Upd: Tamil language (by Tamizharasan)
* Upd: Portuguese [BR] language (by Murillo Gumiero)
* Upd: Polish language (by Adamszopki)
* Upd: General update of the languages
Electrical Calculations version 7.4.1
Updated At: 2025-05-05
Changes: May 5, 2025
Version 7.4.1
* Mod: Improved unit voltage drop table
* Mod: Improved IEC cable reactance table
* Mod: Improved cable resistance / reactance / impedance calculation
* Mod: Improved images of tripping curves
* Mod: Improved and expanded IEC electrical symbols
* Fix: Tripping curves with dark theme
* Upd: Arabic language (by Majed Al-Shagdari)
* Upd: Macedonian language (by Dragančo Velkov)
* Upd: Tamil language (by Tamizharasan)
* Upd: Portuguese [BR] language (by Murillo Gumiero)
* Upd: Hebrew language (by Arken)
* Upd: General update of the languages
Electrical Calculations version 7.4.0
Updated At: 2025-04-01
Changes: Apr 1, 2025
Version 7.4.0
* New: Protection for emergency lighting lines
Electrical Calculations version 7.3.1
Updated At: 2025-03-18
Changes: Mar 18, 2025
Version 7.3.1
* Fix: Fixed keyboard distance from safe area
* Mod: Improved guidance on full load current of motors (NEC)
Electrical Calculations version 7.3.0
Updated At: 2025-03-10
Changes: Mar 10, 2025
Version 7.3.0
* Add: Ability to search for installation method by name or description
* Mod: Small improvements
* Mod: Bottom sheet
* Add: Support for floating keyboard
* Mod: Improved license captions
* Mod: Migration to Gemini 2.0 for chatbot
* Mod: The terms of service are more prominent
* Upd: Traditional Chinese language (by king)
* Upd: Macedonian language (by Dragančo Velkov)
* Upd: General update of the languages