Ask any question about electrical regulations and get the specific BS 7671 regulation number, full text, and practical guidance. Covers the complete 18th Edition with Amendment 4:2026, the IET On-Site Guide, and all eight Guidance Notes.
Free for 7 days · No charge until day 8 · Cancel anytime · Used by 1,000+ UK electricians
1,000+
UK electricians
“Replaced three separate apps with Elec-Mate. Certs, quotes, and scheduling all in one place.”
The AI Regulations Lookup is one of eight specialist Elec-AI agents in the Elec-Mate platform. It gives you instant access to the complete content of BS 7671:2018+A4:2026 through a plain-English search interface. Instead of flipping through the book or searching an index, you ask a question and get the specific regulation, its full text, and a practical explanation.
Every electrician has experienced the frustration of trying to find a specific regulation on site. The book is in the van, or at home, or you know the topic but not the regulation number. The AI Regulations Lookup solves this by putting the entire content of BS 7671, the IET On-Site Guide, and all eight IET Guidance Notes in your pocket, searchable by question rather than by index.
The tool is particularly valuable for three use cases: looking up regulations during inspection and testing work (to verify the correct regulation reference for an observation), answering client questions with authority (citing the specific regulation rather than saying "it is in the regs somewhere"), and settling on-site discussions with other trades or building control inspectors by producing the actual regulation text.
The AI does not replace the BS 7671 book — it makes it accessible in a way that the book alone cannot. A book requires you to know where to look. The AI lets you describe what you need to know and finds the answer for you. It pairs particularly well with the AI Tutor when you want not just the regulation text but a full educational explanation.
You type a question in plain English. The AI analyses the question, identifies the relevant regulation(s), and returns a structured response that includes the regulation number, the full text, a plain-English explanation, practical examples, and cross- references to related regulations and tables.
The AI understands natural language, so you can phrase your question however feels natural: "What size earth do I need for a 10mm cable?", "Is RCD protection needed for bathroom socket outlets?", "Maximum Zs for a 20A Type B MCB", or "Can I use twin and earth in a bathroom?" — all of these will return accurate, specific answers.
When multiple regulations are relevant to your question, the AI returns all of them and explains how they interact. For example, if you ask about bathroom electrical requirements, the AI will reference Section 701 (special locations — bathrooms), Regulation 411.3.2 (additional RCD protection), the IP ratings required for equipment in different zones (Regulation 701.512.2), and the supplementary bonding requirements (Regulation 701.415.2). It explains which requirements are mandatory and which have been relaxed by recent amendments.
In the app
Open the Regulations Lookup agent and ask any question. Get the specific regulation number, full text, and practical guidance in under 10 seconds.
Knowing what a regulation says is one thing — knowing how to apply it correctly is another. The AI Regulations Lookup provides both. For every regulation it returns, it includes practical guidance on how to apply it in real-world situations.
This practical layer distinguishes the AI from simply reading the regulation text. BS 7671 is necessarily written in precise, formal language that covers every possible situation. The AI interprets this for the specific context of your question. For example:
The AI explains that Regulation 701.415.2 permits the omission of supplementary bonding in a bathroom if all circuits in the location are protected by 30 mA RCD and all final circuits comply with the automatic disconnection times of Regulation 411.3.2. It then explains what this means in practice: in most modern domestic installations with an RCBO or split-RCD consumer unit, supplementary bonding in the bathroom can be omitted. But in older installations without full RCD protection, supplementary bonding is still required.
The AI references the cable sizing requirements of Chapter 52 and Appendix 4, but then adds practical guidance: while 1.0mm cable may be adequate for the current- carrying capacity requirement of a low-wattage LED lighting circuit, the electrician must also consider voltage drop (particularly on long runs), the earth fault loop impedance at the furthest point (which increases with smaller conductors and longer runs), and the adiabatic equation for fault protection. For many practical installations, 1.5mm cable is the better choice even when 1.0mm satisfies the basic current requirement.
This practical guidance is informed by the IET On-Site Guide and Guidance Notes, which provide interpretation and application guidance for the formal regulations in BS 7671. The AI synthesises these sources to give you a complete, practical answer.
In the app
Run the calc, fill the certificate, and price the job in the same app — 70+ calculators, 16 certificate types, quoting with AI cost estimation. From £6.99/mo.
BS 7671:2018+A4:2026 is the current edition of the IET Wiring Regulations. Amendment 4 was the current amendment to the 18th Edition. (The free PDF supplement issued on 31 July 2024 was Amendment 3 — a common mix-up.) The AI Regulations Lookup includes the complete content of Amendment 4, so you always get answers based on the current requirements.
A key regulation here is Regulation 530.3.201, which introduces requirements for the selection and erection of bidirectional and unidirectional protective devices. This regulation is particularly relevant for installations incorporating:
The AI explains not just what Regulation 530.3.2 says, but how to apply it in practice: which protective devices need to be bidirectional, how to verify that existing devices are suitable, and what to specify when designing new installations with energy storage. It also notes that Amendment 4 is expected in 2026, so the regulations will continue to evolve.
The AI Regulations Lookup works offline, making it a practical tool for everyday use on site. Common on-site use cases include:
The AI maintains conversation context, so you can have a flowing discussion about a topic. Start with a broad question, then drill down into specifics. The AI remembers what you have already discussed and builds on it, saving you from repeating background information.
In the app
The AI Regulations Lookup puts the entire content of BS 7671:2018+A4:2026, the On-Site Guide, and all Guidance Notes in your pocket. Works offline.
Four steps from question to regulation reference. Ask, read, follow up, and apply.
Type a question such as "Do I need RCD protection on a 40A cooker circuit?" or "What is the maximum cable length for a 20A radial on a TT system?" The AI understands natural language — no need to know the regulation number.
The AI returns the specific regulation number, the full text from BS 7671, and a clear explanation of what it means in practice. Related regulations and table references are included automatically.
Drill deeper into the topic. Ask for more examples, clarification on a specific point, or how the regulation interacts with other requirements. The AI maintains context throughout the conversation.
Use the regulation reference on your inspection reports, certificates, and client communications. The AI gives you the exact regulation number for documentation purposes.
The fastest way to find any BS 7671 regulation. Search by question, get the answer with regulation number, full text, and practical interpretation.
Ask any question about electrical regulations in everyday language. No need to know the regulation number — the AI finds the relevant regulation for you.
Every answer includes the complete regulation text from BS 7671:2018+A4:2026, so you have the authoritative source alongside the practical explanation.
The AI explains what each regulation means in practice, with real-world examples of when it applies and common mistakes to avoid.
When regulations interact or modify each other, the AI shows the complete picture. No more missing a related regulation that changes the meaning.
Full coverage of the latest amendment including Regulation 530.3.2 for bidirectional and unidirectional protective devices.
Look up regulations without signal. Works in basements, plant rooms, and new-build sites. Your own portable reference library.
Verified reviews from the UK App Store.
Elec-Mate is my go to app for business and electrical work. It's feature rich without feeling cluttered. A true all in one app for quotes, certs, calculations, RAMS, EICRs, and more. I use it every day without fail, and it makes my workflow much smoother since I'm not jumping between apps anymore. The price-to-feature ratio is excellent. Any issues I've had, the developer responds within the hour and usually fixes them the same day. 100% recommend.
I've used the app and the web based version for a while now and it's well worth the investment. If you're an apprentice or experienced Spark give it a go, you won't be disappointed.
I've been using Elec-Mate for a while now, and honestly, it's one of the best apps I've ever downloaded. Every aspect of it feels thoughtfully designed, from the clean and intuitive interface to the powerful features that make everything so easy to manage. It's clear that a lot of care and attention went into building this app, and it shows in every detail.
Real feedback from real sparks
“Replaced three separate apps with Elec-Mate. Certs, quotes, and scheduling all in one place.”
Daniel Palmer
Sole Trader · DP Electrical
“I've won two contracts this month because I could turn quotes around same-day with the AI cost engineer.”
Nathan Perry
Electrician · NP Electrical Services
“The study centre got me through my AM2. Mock exams and flashcards are brilliant.”
Jake Pizey
3rd Year Apprentice · Apprentice
7-day free trial
Join 1,000+ UK electricians using Elec-Mate's AI Regulations Lookup. Ask any question, get the specific regulation with practical guidance. 7-day free trial, cancel anytime.
Start your free trialFrom £6.99/mo after the trial — no charge until day 8.
“Replaced three separate apps with Elec-Mate. Certs, quotes, and scheduling all in one place.”
Or download the app
We use cookies to improve the app and measure what works. Cookie Policy