Summary of Topics s508_19_sum.htmlSummary of Topics
This new Nineteenth Edition of ANSI/UL 508 dated October 28, 2024 includes the following changes in requirements:
– Revisions to Address Changes to UL 869A; Section 133.
– Clarification of Ambient for Tests; 44.3 and 44.4.
– Remove Exception to 72.5 for Definite Purpose Motor Controllers.
– Move Pressure Test to General Section 71 and Table 102.1.
– Remove Programmable Controllers from UL 508; 1.3, 1.12, 37.1, Table 77.1, and Index.
– Correction to Section 50; 50.2, Table 50.1, 73.41, and Table 77.1.
– Correction to UL 50 References; 7.3.1, 7.4.7, 7.5.2, 7.15.3, 7.15.14, 8.2.1, 9.2 – 9.4, 9.7, 9.8, 12.1, 12.2, 12.18, A2.4, A2.5, and A2.7.
– Editorial Update to Remove Standard for Components Appendix; 4.1, and Section 5.