Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

Why did Underwriters Laboratories (UL) revise the 1449 standard?

April 26, 2017laboratories revise standard UL underwriters

0

Posted

Why did Underwriters Laboratories (UL) revise the 1449 standard?

1 Answer

0

Posted

A. UL revises its standards as a result of the industry’s awareness of potentially dangerous failure modes of UL listed or recognized products available in the market. Reported catastrophic failures of surge protection systems derived an initiative at UL to revise its UL 1449 2nd edition safety standard. Effective February 9, 2007 all UL listed or recognized surge protection devices sold in the market must meet the revised testing requirements of the standard.