Electrical · cabling, switchboards and lighting
It sizes the cable while you draw the run.
Design current, derated capacity, volt drop, earth size — and the check that decided the answer. Drag the run length below and watch it change.
Cabling & circuits
Cable sizing that shows its working.
Not a result — a derivation. Conductor size, derated current-carrying capacity, volt-drop percentage and minimum earth size, sized together, with the engine naming which check forced the step-up.
Indicative only. The AS/NZS 3008 ampacity and volt-drop tables behind this sizer are logic-anchors we built to exercise the engine, not the licensed Standards Australia values — this demo is not certified electrical design.
Circuit
Design current, breaker size and every check below come straight from the production sizing engine for this load and run.
Result
- Conductor size
- 4 mm²
- Derated CCC
- 32 A (×1)
- Voltage drop
- 6.89 V (2.99%, limit 5%)
- Earth conductor
- 2.5 mm²
- Why this size
- Sized by current-carrying capacity — the conductor had to grow to safely carry the load's current.
- Standard reference
- AS/NZS 3008.1.1:2017 Table 9, Column 4, It=32 A → Iz=32 A; VD per Table 42 ×1.000; AS/NZS 3000:2018 cl 3.4.1 & cl 3.6.2.
Data run — the 90 m channel gate
Within the 90 m permanent-link limit.
Lighting design
The lumen method, walked in 3D.
Room index, utilisation factor, luminaire count and achieved lux — the real chain AS/NZS 1680 describes. Set a target, then walk the room before it is built.
Indicative only. The room-index and utilisation-factor chain here runs the real production lumen-method engine, but its utilisation-factor and maintenance-factor tables are coarse planning approximations — not manufacturer photometric data or a licensed CIBSE/AS table. This is not certified lighting design. Wall bounce in the 3D view redistributes where light pools; it never moves the achieved-lux figure.
Room
Result
- Luminaires
- 13
- Achieved
- 341 lx
- Connected load
- 117 W
- Room index / UF
- 1.04 / 0.55
Meets the target for an AS/NZS 1680 lumen-method check — indicative, see the disclaimer above.
And the rest of it
Switchboards, smart wiring and the paperwork.
The parts of an electrical job that are not a cable run or a light, and that still have to come out of the same design.
The board sized from the circuits
Breaker schedules generated from the circuits you actually designed, not typed up separately afterwards, with DB notation that matches the circuit list it describes. Domestic, multi-residential and non-domestic demand factors size the mains and the board.
AS/NZS 3000 demand tables
Data, Wi-Fi and PoE, planned together
Every data run is checked against the 90 m permanent-link limit, and a run that fails the gate gets a proposed remedy rather than a silent pass. Coverage zones drawn on the plan materialise into the access points needed to fill them, and the PoE tally runs per switch against the IEEE 802.3 classes of what is actually plugged in.
AS/CA S009 · AS/NZS ISO/IEC 11801
Loads looked up, paperwork generated
Common appliance loads are looked up rather than re-typed on every job, feeding straight into the cable-run calculation. The compliance checklist and required-tests list are generated from the design that was actually submitted, and electrical symbols on an uploaded drawing are lifted into job data instead of retyped from the legend.
AS/NZS 3000
Standards and limitations
Everything below is what the engines are actually written against, and what they are not. A licensed electrician still signs the design — this is the working, shown.
Referenced directly
- AS/NZS 3000:2018MandatoryWiring rules — volt drop limits, maximum demand factors, earthing and the compliance checks.
- AS/NZS 3008.1.1MandatoryCable selection method — current-carrying capacity, derating and volt-drop calculation.
- AS/CA S009:2020MandatoryCustomer cabling installation — termination, separation from power, earthing.
- Cabling Provider Rules 2025MandatoryWho is permitted to perform customer cabling work, and under which registration.
- AS/NZS 1680VoluntaryInterior lighting — the lumen method, maintenance factors and target illuminance.
- AS/NZS ISO/IEC 11801.x:2019VoluntaryGeneric cabling — channel classes and the permanent-link length limits.
Indicative, and why
Cable current-carrying capacity
Built to exercise and validate the sizing chain, not transcribed from the licensed AS/NZS 3008.1.1 tables — those are Standards Australia copyright.
Luminaire utilisation factor
A planning approximation, not a manufacturer's photometric data. Real photometry comes from the fitting maker and is theirs.
The METHOD is the published one; two lookup tables behind it are not, because they are copyright and cannot be reproduced from public sources. Every screen that shows a number from one says so on the screen. Licence the tables and the same engines run on the real figures.
Everything else
Every module an electrical contractor can turn on.
Generated from the product's own registry, so it cannot claim something that does not ship.
Electrical
6Cabling, switchboards, lighting and smart wiring. Electrical trade only.
Cabling & circuitsSwitchboardLighting design3D lighting designerSmart wiringElectrical compliance
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Drawings & AI
10Read, marked, measured and asked questions of.
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Catalogue & pricing
6Your own products and your own rates, priced consistently.
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Getting paid
7Quote, variation, invoice, payment — nothing retyped between them.
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Out on site
4Site measures, QC and install sign-off, done from a phone.
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Platform
4The unglamorous parts that decide whether you can trust it.
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E electrical only. Everything unmarked is available to every trade.
Run it against a job you have already priced.
The fastest way to judge an engine is to give it something you already know the answer to.