# Group G — North American vs IEC/ATEX explosion protection designations

For Group G, category is gas group; basis or note is Grain / flour dust, recorded from its source on 2026-08-06.

- **Category:** gas group _(our reading, not quoted from the source)_
- **North American designation:** Group G
- **Basis or note:** Grain / flour dust _(verified: appears in the quote below)_

## What the source says

> G | Grain / flour dust

## Source

- https://www.inframena.com/hazardous-area-classification-equivalency-guide/

Last verified: 2026-08-06. Review by: 2028-08-05.
Part of [North American vs IEC/ATEX explosion protection designations](https://referencesource.org/ex-classification-system-crosswalk/).