British Standard Bs 7671 =link= ❲VERIFIED - Full Review❳

⚠️ Amendment 2 introduced major changes, especially to Section 722 (EV charging), Section 753 (Induction hob & lighting connections), and Chapter 82 (Energy efficiency).

Every circuit must be equipped with protective devices (such as fuses, MCBs, or RCBOs) capable of interrupting currents before they cause damage to conductors or insulation. british standard bs 7671

| Requirement | Typical value / rule | |--------------|----------------------| | (earth fault loop impedance) | Depends on protective device (e.g., 1.44Ω for B6 MCB @ 0.4s) | | RCD protection | Required for socket outlets ≤32A (except specific exemptions) | | Maximum disconnection time | Final circuits ≤32A – 0.4s (TN), 0.2s (TT) | | Ring circuit length | 100m max (excluding protective conductor) | | CPC size | Same as line conductor (≤16mm²) or half (≥35mm²) | | Inspection frequency | Domestic: every 10 years (owner-occupied), 5 years (rented) | ⚠️ Amendment 2 introduced major changes, especially to