If it is of any additional interest, this is from AS/NZS 3000*EDIT. other jurisdictions do specify what accessible means. USA example:
https://www.electricallicenserenewa...ation-Courses/NEC-Content.php?sectionID=205.0
1.4.2 Accessible, readily
Capable of being reached quickly, and without climbing over or removing obstructions, mounting upon a chair, or using a removable ladder, and in any case not more than 2.0 m above the ground, floor or platform.