OSHA regulates the USA workplace, but a lot of local USA jurisdictions (Los 
Angeles, California, for one) require NRTL approval for consumer products.  
There are many NRTL agencies (UL, CSA, Nemko, Intertek, TUV are a few) that can 
do the job.

Patty


From: Kevin Robinson <kevinrobinso...@gmail.com>
Sent: Tuesday, September 27, 2022 5:03 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [EXTERNAL] Re: [PSES] To NRTL or not NRTL, that is the question

[CAUTION: External Email]

OSHA requires any electrical product being used in the workplace to be tested 
and certified by an NRTL.  There is no lower voltage or power limit.

A "UL Listing" and "NRTL Certification" are the same thing.  The difference 
being the UL Listing is a NRTL Listing specifically from UL (similar to the 
difference between "Kleenex" and "facial tissue"

Kevin Robinson

Get Outlook for 
iOS<https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Faka.ms%2Fo0ukef&data=05%7C01%7CPatty.Knudsen%40Teradata.com%7C115a6b328a05434a84a708daa0804228%7C9151cbaafc6b4f4889bb8c4a71982138%7C0%7C0%7C637998769973197017%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=ySnb3rJt%2BBKJ2YdX%2FYR%2Fe8flLWTmWro16CvNdSpXSp4%3D&reserved=0>
________________________________
From: Dürrer Bernd <bernd.duer...@wilo.com<mailto:bernd.duer...@wilo.com>>
Sent: Tuesday, September 27, 2022 7:56:08 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG<mailto:EMC-PSTC@LISTSERV.IEEE.ORG> 
<EMC-PSTC@LISTSERV.IEEE.ORG<mailto:EMC-PSTC@LISTSERV.IEEE.ORG>>
Subject: [PSES] AW: [PSES] To NRTL or not NRTL, that is the question


Hello James,



I propose to check Annex A of the National Electrical Code NFPA 70 (NFPA 70®: 
National Electrical 
Code®<https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.nfpa.org%2Fcodes-and-standards%2Fall-codes-and-standards%2Flist-of-codes-and-standards%2Fdetail%3Fcode%3D70&data=05%7C01%7CPatty.Knudsen%40Teradata.com%7C115a6b328a05434a84a708daa0804228%7C9151cbaafc6b4f4889bb8c4a71982138%7C0%7C0%7C637998769973197017%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=nXBDZv1ceZH16GjMFzGLQyLm7K3D%2FP8ZA%2BOqdOSqR08%3D&reserved=0>)
 that contains a list of product safety standards used for product listing 
where listing is required by the NEC. If the equipment in question is in the 
scope of a standard mentioned there, it requires listing (i.e. certification by 
a NRTL as defined in NEC article 110.3(C)).



Kind regards,



Bernd



Von: James Pawson (U3C) 
<ja...@unit3compliance.co.uk<mailto:ja...@unit3compliance.co.uk>>
Gesendet: Dienstag, 27. September 2022 09:20
An: EMC-PSTC@LISTSERV.IEEE.ORG<mailto:EMC-PSTC@LISTSERV.IEEE.ORG>
Betreff: [PSES] To NRTL or not NRTL, that is the question



Hello experts,



I'm trying to understand what electrical products require NRTL approval for 
electrical safety for sale in the United States.



Looking on the OSHA website I find this page 
(https://www.osha.gov/nationally-recognized-testing-laboratory-program/products-requiring-approval<https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.osha.gov%2Fnationally-recognized-testing-laboratory-program%2Fproducts-requiring-approval&data=05%7C01%7CPatty.Knudsen%40Teradata.com%7C115a6b328a05434a84a708daa0804228%7C9151cbaafc6b4f4889bb8c4a71982138%7C0%7C0%7C637998769973197017%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=iCx%2FZk5P5x4XAejFLjamQ2Y%2B1vfPdnHood%2BhB6nGlOY%3D&reserved=0>)
 which links to this page (

https://www.osha.gov/nationally-recognized-testing-laboratory-program/1910-references#1910_303-307<https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.osha.gov%2Fnationally-recognized-testing-laboratory-program%2F1910-references%231910_303-307&data=05%7C01%7CPatty.Knudsen%40Teradata.com%7C115a6b328a05434a84a708daa0804228%7C9151cbaafc6b4f4889bb8c4a71982138%7C0%7C0%7C637998769973197017%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=wIjwXYAyHKykRDcgLHlBTPrkMMiEuJKO3TpPEWfNYsM%3D&reserved=0>)



Taking this at face value, particularly 303(g)(2)(i), does this mean that 
equipment operating at less than 50V (I'm assuming DC and AC RMS) does not 
require NRTL approval?



The question comes from a customer who was emailed by one of his US customers 
stating that he should have "UL listing". I understand that NRTL approval and 
the Listing process are different with the latter being more involved? Would 
appreciate any comments on this.



Thanks as always.



All the best

James


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