Tag Archives: UL 508A 2nd Edition
UL 508A 2nd Edition Now Required for Industrial Control Panels
The requirements for Industrial Control Panels have been recently updated to the 2nd edition. The second edition changes made to UL 508A will take effect this month. Changes in the new edition are extensive. They include: Air conditioners installed in panels need to comply with UL 1995 and clause 26.3 When protectors (fuse, breaker, etc.)... Read More