Group D
For Group D, category is gas group; iec / atex designation is IIA; basis or note is MESG >0.90 mm, recorded from its source on 2026-08-06.
- Category
- gas group our reading
- North American designation
- Group D
- IEC / ATEX designation
- IIA verified
- Basis or note
- MESG >0.90 mm
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.
What the source says
D | IIA | Methane, propane, gasoline | >0.90 mm
— exknowledge.com, retrieved 2026-08-06
Sources disagree
More than one authority states this, and they do not state the same thing. Both are reproduced with the source each came from — deciding between them is yours, not ours.
Basis or note
exknowledge.com says basis or note is MESG >0.90 mm, as of 2026-08-06.
D | IIA | Methane, propane, gasoline | >0.90 mm
https://exknowledge.com/pages/nec-500-vs-atex-iec.html
ldpi-inc.com says basis or note is Gasoline, as of 2026-08-06.
Gasoline | D | 280 | 536 | 600 PSI | IIA
https://ldpi-inc.com/resources/classification-codes/class-1-locations/
inframena.com says basis or note is Propane, as of 2026-08-06.
D (Propane) | IIA
https://www.inframena.com/hazardous-area-classification-equivalency-guide/
Sources
- exknowledge.comhttps://exknowledge.com/pages/nec-500-vs-atex-iec.html
- ldpi-inc.comhttps://ldpi-inc.com/resources/classification-codes/class-1-locations/
- inframena.comhttps://www.inframena.com/hazardous-area-classification-equivalency-guide/