# UL 1581 — Which OSHA NRTL is recognized for which test standard: all 21 labs' scopes of recognition, cross-referenced

For UL 1581, laboratory is TUV Rheinland of North America, Inc; standard title is Standard for Electrical Wires, Cables, and Flexible Cords, verified against its source on 2026-08-10.

- **Laboratory:** TUV Rheinland of North America, Inc. _(verified: appears in the quote below)_
- **Standard number:** UL 1581 _(verified: appears in the quote below)_
- **Standard title:** Standard for Electrical Wires, Cables, and Flexible Cords _(verified: appears in the quote below)_

## What the source says

> UL 1581 | Standard for Electrical Wires, Cables, and Flexible Cords |

## Source

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

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/).