# FM 3615 — Which OSHA NRTL is recognized for which test standard: all 21 labs' scopes of recognition, cross-referenced

For FM 3615, laboratory is CSA Group Testing and Certification Inc; standard title is Examination Standard for Explosionproof Electrical Equipment – General Requirements, verified against its source on 2026-08-10.

- **Laboratory:** CSA Group Testing and Certification Inc. _(verified: appears in the quote below)_
- **Standard number:** FM 3615 _(verified: appears in the quote below)_
- **Standard title:** Examination Standard for Explosionproof Electrical Equipment – General Requirements _(verified: appears in the quote below)_

## What the source says

> FM 3615 | Examination Standard for Explosionproof Electrical Equipment – General Requirements |

## Source

- https://www.osha.gov/nationally-recognized-testing-laboratory-program/csa

Last verified: 2026-08-10. Review by: 2026-12-08.
Part of [Which OSHA NRTL is recognized for which test standard: all 21 labs' scopes of recognition, cross-referenced](https://referencesource.org/nrtl-recognition-scopes/).