It explicitly excludes:
Rules for clear identification, marking, and maintaining access for maintenance. iec 60364 part 551 pdf
This part of the IEC 60364 series establishes the "Common Rules" that must be followed before moving on to more specific equipment types covered in other chapters (like wiring or earthing). Electrical Installation Guide IEC 60364-5-51:2005 iec 60364 part 551 pdf
He considered the building's physical structure to ensure the equipment would fit safely. Selecting for Survival iec 60364 part 551 pdf