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Official release version:

ElectricalOM - Download (2026.10.7.3)

Warning

Download the new version only if you have an active support/updates subscription

If you are asked for a password to install the software during the installation, please get in touch with your IT to provide the necessary permission

For any assistance please contact us

Note

Please anticipate several updates soon after a major release as we actively address your feedback and improve overall stability.

Update Troubleshooting

If you experience any problems during or after the update please see the Update Troubleshooting articles

See what's new in ElectricalOM v2026.10

BS 7671:2018+A4:2026 (Amendment 4)

24.07: BS 7671:2018+A4:2026 is available in the regulation selection

24.07: Earthing arrangement TN-C-S (PNB)

24.07: Reg. 551.7.2.2 - Assembly rating (InA) check with options (a) to (d) and a new assembly rating editor

24.07: Installation method D is now D1 / D2 following the BS 7671:2018+A4:2026 changes

24.07: Coordination of RCD types (AC, A, F, B) with the upstream RCD (531.3.3)

24.07: Installation method considerations (522.6.202, 522.6.204)

02.10: Lighting column - "Accessible to the public" option for additional RCD protection (Reg. 714.411.3.4)

03.10: UK Forms: EIC, Minor Works, EICR to Amendment 4:2026

New functionality

28.09: ElectricalOM now runs on .NET 10, bringing improved performance, reliability, and long-term support. The upgrade provides faster application startup and execution, better resource efficiency, enhanced security, and a more modern technology foundation for future development. With .NET 10, ElectricalOM is better positioned to deliver a smoother, more responsive experience while making future updates and new features easier to develop and maintain.

15.09: Busbar sections allow any number of tap-offs

09.09: Local Revit sync options per circuit / board, with a Revit Sync grid in the circuit details

28.09: Ability to search the templates by description

29.09: Ability to save the report selection in the project

09.09: Circuit details: Select Similar Extended - select the circuits that match several criteria at once (circuit kind, cable type, cores and size, installation method, CPC installation, protective device, equipment type)

29.09: UK Forms: Ability to copy observations

01.10: BESS load kind - a BESS charges as a load (charging current) and discharges as a source

01.10: Voltage rise check for renewable sources and BESS

01.10: Renewable sources and BESS fault contribution option

01.10: BESS schedule report

09.09: Transfer switches (ATS) schedule report

28.09: SPD schedule report listing every SPD in the project with its board and settings

01.10: Arc flash effective disconnection device option (Load side, Line side, Worst case)

01.10: New straight layout mode per board

02.10: Parallel connections can be selected from the closed switch

02.10: UK Forms: Emergency Lighting certificates to BS 5266-1:2025

06.10: MobileEOM export wizard - test results can be exported for all dates or between two dates

06.10: Arc flash labels - new option to show / hide all the arc flash labels in the schematic at once, over each label's own show setting

06.10: VSD fault clearing time - for a motor with a VSD starter at the distribution circuit, the VSD fault clearing time replaces the device disconnection time in the phase fault and earth fault checks, also for a junction box between the starter and the motor

06.10: NEC-USA voltage drop is calculated with the conductor resistance at its rated temperature by default (conservative). New option to apply the resistance temperature correction for the actual operating temperature (NEC Chapter 9, Table 8, Note 2)

Improvements & Bug fixes

24.07: Option for the Ics check basis (fault at the circuit origin or at the circuit end)

10.09: Option to force the adiabatic check for phase faults (max disconnection time 5 sec)

29.09: Improved selectivity study area - legend in columns, curve numbers on the curves and on the printout

29.09: Ability to select the circuits for the selectivity study in the report selections

30.09: Report selections: filter each list

28.09: Revit: Wiring through containment improved

29.09: Improvements in Revit sync - switchboard couplings, pages and figures are preserved

24.07: New Revit parameters: Assembly rating InA, Peak fault rating (kA), Fault rating (RMS) kA@1s

24.09: Copy / paste and templates keep coupled switchboard arrangements (couplers, pages and conductors)

01.10: The File menu lists up to 10 recent projects

02.10: Material costs: miscellaneous / spares quantities are kept per project

09.09: NEC 310.10(H)(1) check for parallel conductors smaller than 1/0 AWG

09.09: Socket-outlet RCDs to BS 7288 are considered for additional protection only (Reg. 531.3.4.1)

16.09: Improved Junction box in-between and DB / switchboard conversion functions

Devices

24.07: Siemens 3VA MCCBs ETU - tr setting fix

09.09: Siemens 5SV60 and 5SV63 AFDD devices

24.07: ABB Tmax XT TMG MCCBs

24.07: ABB Tmax XT2 Ekip - I2t setting fix

12.08: ABB EMAX 3 ACBs

09.09: ABB EMAX + PR122 DC

09.09: Eaton Bussmann 170M square body fuses

09.09: Eaton Bussmann MJ30-7 gG fuses

09.09: Eaton Bussmann BS88 fuses: AAO BS88 EN60269 gG

09.09: Eaton Bussmann BS88 fuses: AAO BS88 EN60269 gM

09.09: Eaton Bussmann BS88 fuses: BAO BS88 EN60269 gG

09.09: Eaton Bussmann BS88 fuses: BAO BS88 EN60269 gM

09.09: Eaton Bussmann BS88 fuses: NITD BS88 EN60269 gG

09.09: Eaton Bussmann BS88 fuses: NITD BS88 EN60269 aM

09.09: Eaton Bussmann BS88 fuses: DD Industrial HRC BS88 EN60269 gG

09.09: Eaton Bussmann BS88 fuses: DD Industrial HRC BS88 EN60269 gM

09.09: Ferraz Shawmut Protistor aR Size 31

09.09: FuseBox 3P MCBs, 3P+N RCBOs

09.09: Schneider (UL) PowerPacT M/P/R-Frame ET1.0

09.09: Schneider (UL) PowerPacT H/J-Frame I-Line

09.09: Schneider Easergy P5 relay

28.09: Contactum 3P+N Bi-directional RCBOs 10kA (Types B, C, D)

Cables

24.07: Doncaster/PV-Ultra 2C SWA, 4C, 4C SWA

24.07: EN/VFD 3+3PE PVC EN 60228 Class 5 Screened

24.07: Cleveland/TESLA NA2XY PVC 4 Core and Reduced Earth

09.09: EN/YMvK Single-core and Multicore Dca

02.10: Vodafone/1 Pair Power Trunk Cable

About Us

Modecsoft ElectricalOM is a Powerful, Fast & Accurate Software for Low Voltage Electrical Design, Modeling and Certification. Calculations and Checks Compliance with BS 7671:2018 and IEC 60364

Testimonials

Kilbryde Consulting Engineers have been using Electrical OM software for a while now on our projects and have found it to be really user-friendly and the output reports are of a high standard. Their technical team are great and always on hand to answer any queries. Highly recommended.

Rob McLernon, Chartered Electrical Engineer Kilbryde Consulting Engineers

Having used ElectricalOM for over 10 months, I have loved the Ease-of-Use. The user interface is great, with real time calculations showing you the errors in read as you design. Customer support is exceptional, with great help files to guide on how the calculations are carried out.

Kennedy Owino, BEng, PE, MIET CADG Engineering

Of all the electrical design packages we have used, ElectricalOM really does go leaps and bounds higher than others on the market. Not only for the incredible functionality and user interface of the software, but also for the absolute dedication and helpfulness of everyone that we have had the pleasure of dealing with, from the initial purchase to their continued support. I cannot recommend ElectricalOM enough!

Warrick Brew, Electrical Operations Manager Park Holidays UK Ltd

I've used various electrical design software that undertakes calculations in accordance with BS7671 and IEC 60364, but ElectricalOM stands out as my top choice. Its user-friendly interface and comprehensive background information make it easier for users to grasp the requirements for designing of electrical installations, which is especially advantageous for junior staff. Additionally, ElectricalOM streamlines the process by enabling the inclusion of transformers in the circuit, eliminating the need for separate calculations for varying voltage levels. The output data is also conveniently presented in a user-friendly format.

Jacek Soroko, Principal Electrical Engineer SYSTRA

Currently migrating our electrical designs to use ElectricalOM. Feedback from all designers has been overwhelming positive. Excellent user interface which is easy to follow and intuitive, benefiting from CAD based modelling and real time calculations displaying errors as the system is built. Service and support from Modecsoft is reason alone to recommend this software and their quick response to queries and willingness to update the software to meet specific requirements raises them above all others

Dean Carmichael, Senior Engineer - Electrical Telent

We have been pleasantly surprised at the reaction your support teams have at addressing our queries and development requirements. Your response to queries and follow up has been exemplary. Not only have you provided fully functional software for our teams to evaluate, but as issues have come up where we have had functionality which would improve our productivity and usage of the software, these have been embraced and addressed with an impressive response time - in some instances a new software Beta version of the software released within a 24hr turnaround period.

Bruce Rudd, BSc Elec. Eng, GCC, GSSA AP
Electrical Engineering Lead, Buildings and Places, Africa AECOM

I have been extremely pleased with ElectricalOM software. As a small in-house design department with a large workload, we are often required to produce electrical designs for schemes at short notice, ElectricalOM is proving vital in being able to efficiently produce compliant and accurate electrical design information for our projects.

Philip Emmerson IEng MIET, Senior Electrical Engineer Wigan Council, Housing, Property and Corporate Assets

I love the software and am very happy that I proceeded with its purchase. It has made our work so much more detailed, exact and believe it or not, enjoyable!

Sean Mac Diarmada Cuilinn Group Ltd

This software is excellent, very stable when operating and implementing changes, and is improving all the time.

Roy Ball Premier Electrical Installations UK ltd

I taught myself to use Modecsoft ElectricalOM in an afternoon well enough to knock out a 5 board design with full discrimination studies. To say i am impressed is an understatement!

Paul Skyrme Abertawe Engineering Services Limited

Initial impressions, absolutely superb! Simple to use, simple to navigate, excellent detail & quality of end design

Bill Young MIET Director – Electrical Design Specialist, BYTC

Thanks for your helpful support. We have the impression that Modecsoft is able to respond to user requests to add new features and device data more quickly than other software vendors

Philip Wardle CEng FIET FBCS Blackwater Innovation Ltd

Thanks for all the hard work you are doing in developing this EXCELLENT electrical design software program. I am sure it will fast become the “go too package” for a lot of electrical contractors in the UK.

Alan Webb AW Electrical Services

The ElectricalOM undoubtedly is the best electrical design and calculations software in the industry made for BS 7671

Charalambos Flouri, BEng (EEE), MSc, MBA, MIET S. CHRISTOFIDES ELECTRICAL

Many thanks for the excellent program and the customer service!

Steve Lissamore MIET Southeast Electrical Solutions Ltd

We think this is a great product and are now relying on it for much of our work. The ability to change parameters in the design and show them immediately if the design will work (or not) is invaluable. Thank you for a great product, keep up the good work.

Mark Heeney, Electrical Engineering Manager Cornerstone

Using ElectricalOM not only ensures that you have met the requirements for BS 7671, but it also helps to ensure your business is efficient, productive and above all, technically correct.

Gary Parker Technical Manager, ECA

ElectricalOM is much more than a piece of electrical design software. This BIM-ready solution contains current (and accurate) data from numerous manufacturers ensuring that the golden thread of information is maintained throughout the entire process. The UK forms add-on provides contractors with the ability to produce and pre-populate elements of electrical paperwork. For designers, the high quality of reports that can be generated using ElectricalOM simply enhances your offering to clients. In one word, excellent!

Shahid Khan BSc (Hons) MIET Technical Manager, ECA