UL Listing means that Underwriters Laboratories Inc. (UL) has tested representative samples of the product and determined that it meets UL's requirements. These requirements are based primarily on UL's published and nationally recognized Standards for Safety.
UL is an independent product safety certification organization that has been testing products and writing standards for safety for more than a century. UL evaluates more than 19,000 types of products, components, materials and systems annually with 20 billion UL Marks appearing on 66,000 manufacturers' products each year. UL's worldwide family of companies and network of service providers includes 68 laboratory, testing and certification facilities serving customers in 102 countries.
To help sign manufacturers continue to bring safer products to market, UL is enhancing its electric sign certification program. Developed in a highly collaborative fashion with our customers, code officials, sign industry associations and UL technical experts, our enhanced sign program gives customers the ability to select a certification path that best meets their business and safety needs. Plus, it gives code officials what they need to be confident that they're accepting safe, code-compliant products in their jurisdictions.
The new training program covers general requirements for supply connections and wiring; enclosures, openings and spacing’s; grounding and bonding; installation locations, resistance to moisture and drain openings; markings; section signs; and sign components. This training program includes modules specifically addressing requirements for LED, neon, fluorescent, incandescent and HID signs.