ScaleSet
Professional Australian Electrical Design Calculators to AS/NZS 3000 & 3008
ScaleSet is electrical engineering design software for professional electrical engineers, electrical designers and contractors working to Australian and New Zealand standards. It covers maximum demand, cable selection, voltage drop, voltage rise, conduit sizing, cable tray sizing and related design workflows, built around AS/NZS 3000 and AS/NZS 3008, and every calculator is free to use with a cited PDF report. EleCAD, its single line diagram (SLD) builder, is a separate tool within the suite.
Key facts
- ScaleSet offers 20 free electrical design calculators built to AS/NZS 3000:2018 and AS/NZS 3008.1.1:2025 for Australia and New Zealand.
- Every calculator is free to use with no sign-up required to calculate; branded PDF reports are free with a free account.
- Conduit and cable tray fill use the outer diameters of 380+ real Prysmian Australia and Olex catalogue products, not generic estimates.
- Every result cites the specific AS/NZS clause, table and formula used, ready for design submissions.
- ScaleSet is built and reviewed by a Chartered Professional Engineer (CPEng, NER) practising in Sydney.
Who this page is for
Professional electrical engineers, electrical designers, estimators, contractors and project teams working to Australian and New Zealand standards.
Relevant standards
- AS/NZS 3000
- AS/NZS 3008
- AS/NZS 4777
What this tool helps with
- Browse every live ScaleSet calculator from one directory.
- Move between demand, cable sizing and installation checks.
- Use standards-aware tools built for practical Australian workflows.
ScaleSet: electrical engineering software for Australian engineers
What ScaleSet is
ScaleSet is an online suite of 20 electrical design calculators built for professional electrical engineers, electrical designers and contractors in Australia and New Zealand working to AS/NZS 3000:2018 (the Wiring Rules) and AS/NZS 3008.1.1:2025 (cable selection), and every calculator is free to use. It covers maximum demand (AS/NZS 3000 Tables C1, C2 and C3), cable selection and sizing, voltage drop, voltage rise, conduit fill, cable tray fill, earthing cable sizing, current-carrying-capacity derating, power factor correction, UPS battery sizing and generator sizing, and more.
Every calculator runs in the browser with nothing to install: no sign-up to calculate, no paywall on the core calculation, and a branded PDF report included on the free tier (downloading the PDF requires only a free account). Paid Pro and AI Pro plans add cloud project sync, project workspaces, your own logo and accent colour on the PDF, and a monthly AI Mode allowance.
Built for Australian Standards
Unlike generic international calculators, ScaleSet encodes the specific tables, formulas and worked examples from the Australian and New Zealand standards. Cable selection works against the AS/NZS 3008.1.1:2025 tables: the current ratings and correction factors of Section 3 and the a.c. resistance, reactance and voltage drop of Section 4. Maximum demand follows AS/NZS 3000:2018 Appendix C exactly: Table C1 for single and multiple dwellings, Table C2 for non-domestic installations and Table C3 for the energy method.
The cable database ships with 380+ real Prysmian Australia and Olex (Nexans) catalogue products so conduit and cable tray fill calculations use manufacturer-published outer diameters and masses, not estimates.
Who uses ScaleSet
ScaleSet is used by electrical engineers (consulting, infrastructure, building services and renewables), licensed electrical contractors, electrical designers, certifiers, building surveyors and university students learning the AS/NZS framework. The interactive calculators are paired with citation-rich PDF reports that reference the standard, clause and table used for each result: suitable for inclusion in design submissions and design verification packages.
The author, Wisam Tozah, is an Associate Electrical Engineer (B.Eng Electrical, MIEAust, CPEng, NER, NSW DBP, NSW PRE, APEC, IntPE(Aus)) practising in Sydney, Australia.
What you get for free
All calculation engines, all standards references and all 20 calculators are free. The free tier includes a PDF report for every calculation, carrying your project details and citations to the relevant AS/NZS clause and table, with a small ScaleSet line in the footer. There is no calculation cap and no daily limit; downloading the PDF report requires only a free account.
Pro and AI Pro subscriptions add cloud save and sync of saved calculations, project workspaces and folders, your own logo and accent colour on the PDF in place of the ScaleSet footer, and a monthly AI Mode allowance.
One platform, four products
ScaleSet is an electrical engineering software platform for Australia and New Zealand. The 20 design calculators size cables, check voltage drop and voltage rise, assess maximum demand, fill conduits and cable trays, and document the result against AS/NZS 3000:2018 and AS/NZS 3008.1.1:2025, each with a cited, standards-referenced PDF report.
EleCAD is the single line diagram (SLD) builder on the same platform: the diagram is a calculation model, so every cable is sized and every circuit checked as it is drawn, and the drawing exports to PDF and DXF. AI Mode is a plain-English way into the same calculation engines: describe the job and the calculator runs it.
ScaleSet PDF is the platform's Windows desktop app for marking up, drafting on and taking quantities off PDF drawing sets: revision clouds, lengths, areas and counts to scale, and a compare of two issues of a drawing, for every building services trade. The reader is a free download, and drawings stay on your own computer.
Frequently asked questions
Is ScaleSet free for Australian electricians and engineers?
- Yes. Every calculator is free to use online: cable selection, voltage drop, maximum demand (AS/NZS 3000 Tables C1, C2 and C3), conduit fill, cable tray fill, earthing, derating, power factor correction, UPS battery, generator sizing and the others. Branded PDF reports are included in the free tier. Pro and AI Pro plans add cloud project sync and a monthly AI Mode allowance.
Which Australian Standards does ScaleSet implement?
- AS/NZS 3000:2018 (Wiring Rules): particularly Appendix B (fault loop), Appendix C (Circuit Arrangements: maximum demand Tables C1/C2/C3, and the Tables C10-C12 conduit capacity guides). AS/NZS 3008.1.1:2025 (Selection of cables): the Section 3 tables for current ratings and correction factors, and the Section 4 tables for a.c. resistance, reactance and voltage drop. AS/NZS 4777.1 for inverter voltage rise. AS/NZS 3017 testing references. IEEE 485, 1184 and 1189 for UPS battery sizing.
Do I need to sign up to use the ScaleSet calculators?
- No sign-up is required to run any calculator: the full calculation and all standards lookups are available immediately. A free account is needed to download the branded PDF or DXF report (the download itself stays free). Pro and AI Pro are optional paid tiers on top, adding cloud save, project workspaces and your own logo and accent colour on the report.
Can I trust the calculator outputs for design submissions?
- ScaleSet is a documented design tool. Every calculation and PDF report cites the specific AS/NZS clause, table and formula used. The tool is designed and maintained by a Chartered Professional Engineer (CPEng, NER) practising under the Australian framework, but final verification of design outputs remains the responsibility of the certifying engineer for each project, as required under the AS/NZS framework.
Does ScaleSet work offline?
- ScaleSet is a Progressive Web App (PWA): once loaded, the self-contained calculators (maximum demand, conduit and tray fill, switchboard sizing, lightning risk, arc flash and the rest) work offline. The cable selection, voltage drop, voltage rise and correction factor calculators, and EleCAD, compute on the ScaleSet server, which holds the AS/NZS 3008 tables, so they need a connection. Saved calculations sync to your cloud workspace the next time you are online. Add it to the home screen of a phone, or install it as an app from your desktop browser, to get the offline experience.
What does ScaleSet cover beyond cable sizing?
- Maximum demand under AS/NZS 3000 Tables C1, C2 and C3; voltage drop and voltage rise (AS/NZS 4777.1); conduit fill (AS/NZS 3000 Appendix C); cable tray fill; earth cable sizing (AS/NZS 3000 Table 5.1); current-carrying-capacity derating (AS/NZS 3008.1.1 Tables 3.33 to 3.48); time-current curve (TCC) protection coordination; power factor correction capacitor sizing; UPS battery sizing (IEEE 485 / 1184 / 1189); generator sizing; LED inrush current; and a free electrical CAD single-line-diagram builder.
Does ScaleSet have PDF markup and takeoff software?
- Yes. ScaleSet PDF is a Windows 10 and 11 desktop app for marking up, drafting on and taking quantities off PDF drawing sets: revision clouds, lengths, areas and counts to scale, and comparing two issues of a drawing. The reader is a free download; markup and takeoff come with a 90-day free trial for a new email, then a team licence. Drawings are opened and saved on your own computer and never uploaded. It is a markup and takeoff tool, separate from the web calculators and EleCAD.