# IEEE C37.74 — Which OSHA-recognized labs (NRTLs) can certify to a given test standard

For IEEE C37.74, standard title is Subsurface, Vault, and Pad-Mounted Load-Interrupter Switchgear and Fused Load-Interrupter Switchgear for Alternating Current Systems Up to 38 kV Switchgear; status is listed as appropriate, recorded from its source on 2026-08-10.

- **Test standard:** IEEE C37.74 _(verified: appears in the quote below)_
- **Standard title:** Subsurface, Vault, and Pad-Mounted Load-Interrupter Switchgear and Fused Load-Interrupter Switchgear for Alternating Current Systems Up to 38 kV Switchgear _(verified: appears in the quote below)_
- **Status:** listed as appropriate _(our reading, not quoted from the source)_

## What the source says

> IEEE C37.74 | Subsurface, Vault, and Pad-Mounted Load-Interrupter Switchgear and Fused Load-Interrupter Switchgear for Alternating Current Systems Up to 38 kV Switchgear |

## Source

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

Last verified: 2026-08-10. Review by: 2026-11-08.
Part of [Which OSHA-recognized labs (NRTLs) can certify to a given test standard](https://referencesource.org/nrtl-recognized-test-standards/).