The standard ensures safety by preventing ambiguity in electrical installations. It covers:
The primary reason engineers seek out the IEC 60445 PDF is that compliance is not optional—it is a safety requirement. Incorrect identification of a neutral wire or a protective earth wire can lead to catastrophic results, including electric shock or fire.
Updated identification methods were established for combined conductors, such as Protective Earth and Neutral (PEN). How to Access IEC 60445 PDF
I can give you the precise application rules for your specific scenario.