Class III · dust group
What is the basis or note for Class III · dust group?
For Class III, category is dust group; basis or note is IEC considers fibers within the dust framework, recorded from its source on 2026-10-06.
Fiber hazards: NEC Class III (fibers/flyings) has no IEC equivalent. IEC considers fibers within the dust framework.
— exknowledge.com, retrieved 2026-10-06
- Category
- dust group our reading
- North American designation
- Class III verified
- Basis or note
- IEC considers fibers within the dust framework verified
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
Source
- exknowledge.comhttps://exknowledge.com/pages/nec-500-vs-atex-iec.html