Surface Raceways and Fittings for Use With Data, Signal, and Control Circuits
standard by Underwriters Laboratories, 04/28/1998

Rigid Metal Conduit
standard by Underwriters Laboratories, 11/30/2007

Rotating Electrical Machines – Part 1: Rating and Performance
standard by Underwriters Laboratories, 09/18/2018

Rotating Electrical Machines – Part 2-1: Standard methods for determining losses and efficiency from tests (excluding machines for traction vehicles)
standard by Underwriters Laboratories, 02/21/2017

Standard for Audio, Video and Similar Electronic Apparatus – Safety Requirements
standard by Underwriters Laboratories, 09/30/2015

Explosive atmospheres – Part 0: Equipment – General requirements
standard by Underwriters Laboratories, 07/26/2013

Explosive atmospheres – Part 0: Equipment – General requirements
standard by Underwriters Laboratories, 03/26/2019

Explosive Atmospheres – Part 1: Equipment Protection by Flameproof Enclosures "d"
standard by Underwriters Laboratories, 09/18/2015

Explosive Atmospheres – Part 11: Equipment Protection by Intrinsic Safety 'i'
standard by Underwriters Laboratories, 02/15/2013