Amendment 3 to BS 7671:2018+A3:2024

Amendment 3 to BS 7671:2018+A3:2024

Complying with Amendment 3 BS 7671:2018+A3:2024: Key Updates for Consumer Units and Bi-Directional RCBOs

The latest Amendment 3 to BS 7671:2018+A3:2024 took effect on July 31, 2024, and introduces crucial updates to the IET Wiring Regulations. This amendment focuses on clarifying how to connect protective devices, especially in installations using solar PV systems or battery storage. At Electrical4Less, we ensure all our products, including consumer units and bi-directional RCBOs, fully comply with these new regulations.

What Is Amendment 3 BS 7671:2018+A3:2024?

This amendment updates safety and operational requirements for modern electrical systems. It introduces new definitions and guidelines to ensure the safe installation of protective devices in systems that involve alternative power sources.

Key Changes in Amendment 3 (2024)

New Definitions for Protective Devices

The amendment introduces two key terms:

  • Bidirectional Protective Device: These devices handle current flow in both directions and are essential for systems like solar PV or battery storage.
  • Unidirectional Protective Device: These devices are used for traditional power systems, where current flows in only one direction.

At Electrical4Less, our consumer units with bi-directional RCBOs ensure compliance with these updated regulations for alternative energy installations.

Immediate Implementation Required

Amendment 3 requires immediate implementation. Any new or modified electrical installations must follow these updated guidelines. Our product range at Electrical4Less ensures you have the tools to stay compliant.

The Role of Bi-Directional RCBOs

Live Electrical AMR110B-030 Live Electrical 30mA Type A 10A 6kA B Curve Bi-Directional RCBO 1
Live Electrical AMR110B-030 Live Electrical 30mA Type A 10A 6kA B Curve Bi-Directional RCBO 1

Bi-Directional RCBOs for Renewable Energy Systems

Bi-directional RCBOs are critical for installations where energy flows in both directions, such as solar PV systems or battery storage. These devices detect both AC and DC faults, offering enhanced protection for modern electrical systems. At Electrical4Less, we stock bi-directional RCBOs that meet all the Amendment 3 requirements.


Amendment 3: Availability and Feedback

You can download the full text of Amendment 3 for free from the IET and BSI websites. This update was prompted by a BEAMA bulletin that called for clearer guidelines on how to handle systems with alternative power sources.

The IET and BSI are currently collecting feedback from industry professionals, with the possibility of further adjustments based on this input. At Electrical4Less, we are committed to providing products that comply with current and future updates to the regulations.


FAQs – Amendment 3 BS 7671:2018+A3:2024

1. What is the main focus of Amendment 3 BS 7671:2018+A3:2024?

The amendment focuses on the correct installation of protective devices in systems using alternative power sources like solar PV and battery storage. It ensures that bi-directional RCBOs and SPDs are integrated into modern electrical systems.

2. What are bidirectional protective devices?

These devices handle current flow in both directions, making them essential for installations involving renewable energy sources where both AC and DC current may flow.

3. Is Amendment 3 mandatory immediately?

Yes, Amendment 3 requires immediate implementation in all new or modified installations. At Electrical4Less, we offer products that meet these updated standards.

4. Can I access Amendment 3 for free?

Yes, you can download the full document from the IET and BSI websites for free.

5. Are consumer units with bi-directional RCBOs compliant with Amendment 3?

Yes, consumer units with bi-directional RCBOs are fully compliant with Amendment 3 and are crucial for installations involving solar PV systems or battery storage.

6. Does Electrical4Less offer bulk discounts for Amendment 3 compliant products?

Yes, we offer bulk discounts on all Amendment 3 compliant products, including consumer units and bi-directional RCBOs.


Stay Compliant with Electrical4Less

At Electrical4Less, we provide a range of products designed to comply with Amendment 3 BS 7671:2018+A3:2024, including consumer units, bi-directional RCBOs, and SPDs. Contact us today for expert advice, bulk discounts, or to explore our product range.