Brian, Section 2.948 of Part 47 of the CFR requires the lab be accredited when doing certification testing. https://www.ecfr.gov/current/title-47/chapter-I/subchapter-A/part-2/subpart-J/subject-group-ECFRd5ad3b739dbf27a/section-2.948
As for whether it is a Class 1 or Class 2 Permissive change depends on what the change is. If you’re only changing out Y caps in the mains filter it is likely a Class 1, but you have to have data to back that up. Contact your test lab for a discussion about what they think is necessary. KDB 178919 has information about permissive changes https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?id=33013&switch=P Thanks, [cid:image123477.jpg@08059ED4.69696CEA] David Schaefer​ Technical Manager Element Materials Technology 9349 W Broadway Ave Brooklyn Park , MN 55445 , United States O +1 612 638 5136<tel:+1%20612%20638%205136> ext. 10461 david.schae...@element.com<mailto:david.schae...@element.com> www.element.com<https://www.element.com/> [cid:image524213.png@AE953472.A4E415A4]<https://www.linkedin.com/organization-guest/company/element-materials-technology?challengeId=AQFf9AemZ4SobwAAAXOQwivOsnkHiTt2ByoCkOxVQjOGOjRlivicVgYlN1dz5QXjId9bpa0keWzfVxhl8KPj78uD6-S6nfqRsg&submissionId=e49e0dc0-96a3-2516-27fa-ee2e8c42b177> [cid:image720428.png@D28D32F7.7A266FA3]<https://twitter.com/ElementTesting/> [cid:image053279.png@E9948F36.2CD8E261]<https://www.instagram.com/elementtesting/> [cid:image116871.png@518F7E7D.AC116B3E]<https://www.youtube.com/c/ElementTesting> [cid:image652679.jpg@967DC868.AF2EFED7]<https://elementmaterials.eu.qualtrics.com/jfe/form/SV_3xQqm84s6IydI5D> From: Brian Gregory [mailto:brian_greg...@netzero.net] Sent: Wednesday, August 9, 2023 5:20 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Necessary Lab accreditations, class 2 permissible change CAUTION:This email originated from outside of Element Materials Technology. DO NOT click links or open attachments unless you recognize the sender and know the content is safe. Please contact IT Service Desk if you are in any doubt about this email. Hello EMC experts, A question came up today about filing new results to FCC for our legacy product. 1. If the filing is only for FCC, then the lab providing the report does not need A2LA accreditation, 2. If the filing is for a safety report, then the lab does need A2LA accreditation. Have I got that right? We're filing some small board changes, including Y-caps and can't figure out if this is a Class 2 permissible change, defined as: " includes those modifications which degrade the performance characteristics as reported to the Commission" 3. How or who determines if our change is Class 2 (degraded performance) or Class 1? We think the results are better, but it's not like we got uniformly more margin across the board. Thanks! 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