Oh I dont know.....mabey for liability protection. Or the ability to sell a product that can not be sold any other way unles it has the UL or CSA or CSA/UL sticker.
I can only state that in Ontario, Canada the Ontario Electical Safety Code makes it illegal to advertise, display or offer for sale or other disposal, or sell or otherwise dispose of any electrical equipment unless it has been approved in accordance with Rule 2-024
Rule 2-024 is the Approval of Electrical Equipment and includes certification by the CSA or the UL/ULC
http://www.csa-international.org/ It is, I guess, a oint of view, n'est pas?
Doug....et al
