Bath Homeowners Guide to 18th Edition Amendment 4 Wiring Regulations

The "Orange Book" is Coming.

Why Bath Homeowners Need to Know About 18th Edition Amendment 4 Wiring Regulations

If you own a home or run a business in Bath, electrical safety regulations are probably the last thing on your mind. However, January 2026 marks a significant turning point in UK electrical safety standards that will directly impact how we power our properties moving forward.

The IET Wiring Regulations (BS 7671)—the “bible” for electricians across the UK—has just been finalised for its latest update. Known in the trade as the “Orange Book,” Amendment 4 is set for official release on April 15, 2026.

But why should a homeowner care about a technical rulebook? Because these rules dictate the safety, efficiency, and insurability of your property.

What’s Changing in 2026?

Unlike minor updates in the past, Amendment 4 is catching up with major shifts in technology that we are already seeing installed in homes across Somerset.

The most significant addition is a brand-new section dedicated to stationary battery storage. As more households in Bath install solar panels, the demand for storing that energy has skyrocketed. These systems are fantastic for lowering bills, but they carry unique risks. The new regulations provide strict guidelines on how batteries must be installed to prevent fire hazards and ensure safe operation.

Furthermore, the update addresses Power over Ethernet (PoE). If you are looking to install smart lighting, advanced security cameras, or integrated audio systems that draw power through data cables, the rules on how these are safely wired have just been tightened.

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Staying Compliant in Bath

When regulations change, it’s vital that your electrical installations change with them. Using outdated methods for modern technology—like EV chargers or battery walls—is a recipe for disaster.

This is why choosing a qualified Bath electrician who stays ahead of the curve is crucial. Any electrical work carried out after October 2026 must comply with these new standards.

At Darrington Electrical, we are already briefing our team on the “Orange Book” changes to ensure every job we do is future-proof. If you are planning a renovation or adding green tech to your home this year, make sure your project meets the gold standard of safety.

Are you looking for reliable, up-to-date electricians in Bath for your next project?

Contact the team at Darrington Electrical Services Bath today for a consultation.

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During our time serving the Bath area, Darrington Electrical has built a firm reputation as being a reliable and trustworthy company who complete the job on time and within budget.

When you get in touch, you will be dealt with quickly and professionally with all efforts made to meet your exacting requirements at a time to suit you. Let us take care of your electrical project, let us know how we can help you.

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tom@darringtonelec.co.uk

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