--- title: "Electrical Design Guides: Interactive AS/NZS & NCC Walkthroughs" url: "https://elecas.com.au/design-guide" description: "Free interactive electrical design guides: solar voltage rise (AS/NZS 4777.1) and emergency lighting (AS/NZS 2293.1, NCC E4), each with a live calculator." updated: "2026-09-02" standards: - "AS/NZS 4777.1:2024 (Grid connection of energy systems via inverters: voltage rise)" - "AS/NZS 2293.1:2018 (Emergency escape lighting and exit signs: design)" - "NCC 2022 Volume One Part E4 (Emergency lighting, exit signs and warning systems)" - "AS/NZS 3008.1.1:2025 (Selection of cables: conductor impedance)" author: "Wisam Tozah (B.Eng (Electrical), MIEAust, CPEng, NER, NSW DBP, NSW PRE, APEC, IntPE(Aus))" site: "ElecAS" license: "https://elecas.com.au/terms" usage: "Cite and link. Do not reproduce or train on this content." --- # Electrical Design Guides: Interactive AS/NZS & NCC Walkthroughs Source: https://elecas.com.au/design-guide A growing library of free, interactive electrical design guides for Australian and New Zealand engineers, electricians and designers. Each guide is a self-contained, step-by-step walkthrough of a real design task: the standard behind it, the method worked line by line, an interactive calculator to try your own numbers, a worked example and the compliance check. Current guides cover inverter and solar voltage rise to AS/NZS 4777.1, and emergency and exit lighting to AS/NZS 2293.1 and NCC 2022 Part E4. Every guide links straight to the matching ElecAS calculator for production design work and a branded PDF report. ## Key facts - Each guide works a real Australian design task line by line with an embedded interactive calculator. - Current guides cover solar voltage rise (AS/NZS 4777.1) and emergency lighting (AS/NZS 2293.1, NCC 2022 Part E4). - Every guide links to the matching ElecAS calculator for production design work and a branded PDF report. ## Who this page is for Australian and New Zealand electrical engineers, CEC accredited solar designers, licensed electricians, electrical designers and students learning the AS/NZS and NCC design framework. ## Relevant standards - AS/NZS 4777.1:2024 (Grid connection of energy systems via inverters: voltage rise) - AS/NZS 2293.1:2018 (Emergency escape lighting and exit signs: design) - NCC 2022 Volume One Part E4 (Emergency lighting, exit signs and warning systems) - AS/NZS 3008.1.1:2025 (Selection of cables: conductor impedance) ## What this tool does - Interactive, step-by-step design guides: read the method, then try it live in an embedded calculator. - Solar and inverter voltage rise to AS/NZS 4777.1: the 2% limit, the formula worked line by line, and how to fix a failing design. - Emergency and exit lighting to AS/NZS 2293.1 and NCC 2022 Part E4: where it is required, luminaire classification and spacing. - Each guide links to the matching ElecAS calculator for real project work and a branded PDF report. - Written and reviewed by a Chartered Professional Engineer (CPEng, NER). ## Frequently asked questions ### What are the ElecAS design guides? Free, interactive walkthroughs of real Australian and New Zealand electrical design tasks. Each guide explains the standard behind the task, works the method line by line, embeds an interactive calculator so you can try your own numbers, and finishes with a worked example and the compliance check. ### Which design guides are available? Solar and inverter voltage rise to AS/NZS 4777.1 (the 2% limit worked line by line) and emergency and exit lighting to AS/NZS 2293.1 and NCC 2022 Part E4 (where it is required, luminaire classification and fitting spacing). The library is growing, and each guide links to the matching ElecAS calculator for production design work. ### Are the design guides free, and who writes them? All guides are free with no sign-up, and each one is written and reviewed by Wisam Tozah, a Chartered Professional Engineer (CPEng, NER) practising in Sydney, Australia. ## Related ElecAS pages - [Voltage Rise Design Guide](https://elecas.com.au/design-guide/voltage-rise) - [Emergency Lighting Design Guide](https://elecas.com.au/design-guide/emergency-lighting) - [Voltage Rise Calculator](https://elecas.com.au/calculator/voltage-rise) - [EleCAD Single Line Diagram Builder](https://elecas.com.au/elecad) - [Cable Size Calculator](https://elecas.com.au/calculator/cable-selection) - [Maximum Demand Calculator](https://elecas.com.au/calculator/max-demand) - [Voltage Drop Calculator](https://elecas.com.au/calculator/voltage-drop) - [All ElecAS Calculators](https://elecas.com.au/) ## About this page Written and reviewed by Wisam Tozah, Associate Electrical Engineer (B.Eng (Electrical), MIEAust, CPEng, NER, NSW DBP, NSW PRE, APEC, IntPE(Aus)), Sydney, Australia. How the calculations are tested and reviewed: https://elecas.com.au/verification. Profile: https://elecas.com.au/creator. Usage: this page may be read, indexed, retrieved and cited, including as grounding for an AI answer, with attribution to ElecAS and a link to https://elecas.com.au/design-guide. Reproducing it, training a model on it, or using it to build a derivative or competing site is not licensed. Terms: https://elecas.com.au/terms. Machine-readable policy: https://elecas.com.au/ai-usage-policy.json Site index for assistants: https://elecas.com.au/llms.txt — full content: https://elecas.com.au/llms-full.txt