IEC updates its standards regularly. As of 2024-2025, the latest versions include amendments like IEC 60364-4-41:2005+AMD1:2017+AMD2:2024 (the "+AMD" indicates amendments). An outdated PDF (e.g., from 1990) may reference obsolete technologies like fuse-only protection, missing modern RCD requirements.
A project in Dubai, designed by a German engineer, using equipment from China, and inspected by a French firm—all can reference the same clauses. This eliminates ambiguity. iec 60364.pdf
Having a PDF file is only half the battle. Here is a professional workflow for using effectively: IEC updates its standards regularly