Underwriters Laboratories Inc.
     

5 Things to Know about Safely Hanging Decorative Lights

  1. Look for the UL Mark on light strings, electrical decorations and extension cords. Remember:


    • Green UL Mark = For indoor-only use
    • Red UL Mark = For indoor and outdoor use


  2. Make sure light strings do not contain any loose connections, frayed or bare wires, or broken or cracked sockets.


  3. Practice ladder safety when hanging lights. (Click here for more information on ladder safety.)


  4. Use plastic hooks or clips designed especially for hanging lights. Never nail or staple light strings.


  5. Decorative lights are only intended for short-term use. Take them down after 90 days to prevent possible damage from weather conditions and neighborhood animals.