Part of the SERT Blog Series: BS 7671 – The Road to Amendment 4 & Beyond
Understanding BS 7671 Amendment 4
BS 7671 Amendment 4 is the next update to the 18th Edition Wiring Regulations, expected in 2026. While it is not a full 19th Edition, it introduces technical changes that reflect modern electrical installations, including renewable energy, smart energy systems and low-voltage networks.
For Hampshire electricians working in Southampton, Portsmouth, Winchester, Basingstoke, and surrounding areas, staying informed early ensures you remain compliant, contract-ready and competitive in domestic, commercial and industrial electrical projects.
Key Technical Changes to Anticipate
Amendment 4 is expected to focus on:
- Battery storage and low-voltage (LV) generation systems: safe integration standards for homes and commercial sites
- Functional earthing and ICT bonding: updated requirements for data, communications, and smart installations
- PoE / Extra-Low-Voltage (ELV) DC systems: guidance for smart home and building automation
- Inspection and testing updates: new procedures for compliance checks and certification
- Safety, isolation, and emergency arrangements: improvements for hybrid and renewable energy systems
- Hybrid and smart energy system integration: clear requirements for combined traditional and renewable installations
These updates reflect the growing crossover between standard electrical work and EV charging, solar PV, battery storage and smart energy systems.
Why Hampshire Electricians Should Prepare Now
Delaying Amendment 4 awareness can result in:
- Non-compliance during audits or client inspections
- Missed contract opportunities in social housing, facilities management, EV charging or solar PV projects
- Falling behind competitors who proactively upskill
The recommended approach: complete BS 7671 18th Edition training now, then take a short, employer-ready Amendment 4 update in 2026. This ensures continuous compliance, reduces commercial risk and positions electricians for high-value projects.
Optional Technical Upskills to Boost Competitiveness
SERT also provides specialist modules to complement Amendment 4 preparation, targeting the Hampshire market:
- EV Charging Installation Training: domestic and commercial compliance
- Solar PV and Battery Storage Courses: safe integration into low-voltage networks
- Inspection and Testing Training: advanced competency for audits and client assurance
These courses help Hampshire electricians meet local employer demand and secure higher-value contracts in the renewable energy and smart home sector.
Key Takeaways
- BS 7671 Amendment 4 is a critical update for modern electrical installations.
- Early preparation ensures compliance, contract eligibility, and technical readiness.
- Completing the 18th Edition now allows a smooth Amendment 4 upgrade in 2026.
- Optional technical upskills increase marketability in EV charging, solar PV, battery storage and inspection work.
Prepare Now for Amendment 4
Stay fully compliant with BS 7671 and position yourself for Amendment 4 in 2026.
Book SERT’s BS 7671 18th Edition training today, available at our Whiteley training centre, designed specifically for electricians across Hampshire and the South-East.
Gain the technical knowledge and certification to take on high-value contracts in EV charging, solar PV, battery storage and inspection work.