| Standard | Region | Relationship to IEC 60364 | | :--- | :--- | :--- | | | International (Global) | The "Root" standard. | | HD 60364 | European Union | Harmonized document – technically identical to IEC 60364. | | BS 7671 (UK) | United Kingdom | Based on IEC 60364/HD 60364, with UK-specific appendices (e.g., for TT earthing in the UK). | | NBR 5410 | Brazil | Based on IEC 60364. | | NEC (NFPA 70) | USA | Not based on IEC 60364 (Uses different voltage, frequency, and philosophy). |
The standard covers several key aspects of electrical installations, including: iec 60364.pdf