backwards RU

From Noah.org
Revision as of 15:22, 27 September 2014 by Root (Talk | contribs) (Created page with 'Category:Engineering Category:Useless Trivia Why do you see this '''backwards RU''' mark on components? It's given by '''Underwriters Laboratories''' to indicate a compo…')

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search


Why do you see this backwards RU mark on components? It's given by Underwriters Laboratories to indicate a component has met their quality standards. It's the equivalent of the UL mark applied to the outside of a complete product (TV, refrigerator, blender, etc.) The backwards-R U is for components that make up a complete product. Normally, a consumer or end user would not see the RU mark.