UL Approved Christmas Lights and CSA Approved Lights

About UL and CSA Certifications

What does UL mean?

Underwriters Laboratories Inc. (UL) is an independent product safety certification organization that controls and monitors lighting rules and safety regulations. A "UL-approved" designation means a product has been approved by this agency.
"UL has developed more than 1000 Standards for Safety. Our Standards for Safety are essential to helping ensure public safety and confidence, reduce costs, improve quality and market products and services. Millions of products and their components are tested to UL's rigorous safety standards with the result that consumers live in a safer environment than they would have otherwise."

What does CSA mean?

CSA stands for Canadian Standards Association. CSA certifications are used and accepted across North America and around the world, on over 1 billion products. And that number continues to grow.
In the United States, CSA International is accredited by the Occupational Health and Safety Administration (OSHA) as a Nationally Recognized Testing Laboratory (NRTL). Generally speaking, all OSHA accredited laboratories conduct their tests against the same sets of U.S. standards and codes, regardless of who authors or publishes them. CSA International tests are applicable to U.S. standards, which include ANSI, UL, CSA, NSF, and others. In Canada, CSA International is accredited as a Certification Organization (CO) and as a Testing Organization (TO) by the Standards Council of Canada (SCC).