Originally Posted by edatlanta
CSA is also called CUL. I don't know if they officially changed the name or not and CSA might still appear on some products, but CSA/CUL is the Canadian version of UL in the U.S.A.
CSA and UL are separate bodies that have mutual agreements on certification. Devices/Products can be labelled as CSA and/or ULC (Underwriters Laboratories of Canada). cUL certification indicates that the device complies with the Canadian Electrical Code as tested by UL.
In general, when shopping in Canada if you don't see one of the CSA/ULC symbols, you know it is grey (er gray) market stuff, including improper imports from the United States (generally just marked UL).
The Presidents of CSA Group and UL signed an Agreement on Acceptance of Components and a Memorandum of Understanding.
The Memorandum of Understanding agreement between the two organizations simplifies the process for electrical industry customers desiring both CSA and UL marks obtain dual CSA and UL certification through a single test program.
That means if someone requires CSA or UL, in fact he requires the product to follow certain norms/standards. According to above explanation this can be approved by the "Canadian Standards Association" (CSA) or by the "Underwriters Laboratories Inc." (UL). To indicate a product being approved by UL for the compliance with the "Canadian Electrical Code" the product is
This is primarily for electrical devices. There are several areas of overlap between the two bodies, but CSA does certifications in areas not covered by UL.