您无需这样做。您只需访问 CSA 集团网站并查找列出的制造商即可。您也可以打印结果页面；产品上会显示 CSA 列出的认证。
UL和CSA是与美国保险实验室或加拿大标准协会相对应的第三方权威认证机构。虽然这两个机构的权威性都非常高，但一般来说，北美买家对UL的认可度更高，而加拿大买家对CSA的认可度更高。作为行业认证中最具挑战性的两家第三方机构，它们在认证期间不仅要审查制造商的生产设备和质量检测设备，而且还需要多次送样进行测试，以确保完全符合规范的相关要求。而且，UL甚至会不定期对制造商进行抽查，以确保其按照标准规范进行生产。所以这就是为什么选择UL或CSA的制造商的成本会高出很多的原因。因此，并不是所有的制造商都能通过UL或CSA的认证，所以买家需要查看制造商拥有的证书以及认证的产品类型。不过，ASTM或NEMA一般不提供认证服务，这里就不展开讨论了。
Ledes’s products are CSA FT4 & UL 94V-0 (ASTM D 3801) approved. It means our rigid or ENT electrical PVC conduit will self-extinguishing in 5 seconds after cutting off fire sources. Compared with CSA standard no more than 30s after cutting of fire sources, Ledes is hgher than the standard.
Ledes rigid PVC electrical conduit is CSA C22.2 No. 211.2 certified with an FT4 fire rating and is UL 651 listed. The DB2 rigid PVC conduit is CSA C22.2 No. 211.2 certified with FT4. The ENT tubing is UL1653 and CSA C22.2 No. 227.1 listed with FT4, too.
China is the Country of Origin for the export of Ledes products.
We do not provide CAD file drawings of products. Still, we can provide product catalogs and technical parameter documents, most of which are already available on the download page of our website. You can contact our business engineers for more information if you have other needs.
CSA standards have specify the fire resistance rating for electrical conduit, CSA C22.2 No. 211.0 is the Canadian standard that covers flame tests for wires and cables. This standard specifies the testing methods and performance requirements for various flame ratings, including FT4 and FT6.
Here are the details of the testing methods and assessment criteria:
Rating | Test Method | Assessment Criteria |
FT4 |
Vertical Tray Flame Test | 1.Flame spread distance: The flame should not spread more than 1.5 meters along the sample within 20 minutes. 2. Duration of flame application: The flame should be applied for a duration of 20 minutes. |
FT6 |
Steiner Tunnel Flame Test | 1. Flame spread index (FSI): The FSI value should be less than or equal to 30. 2. Smoke developed index (SDI): The SDI value should be less than or equal to 50. |
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