The following changes in requirements are being proposed:
1. For Preliminary Review Only: Revision of the Scope - Greater than 600 V Applications
2. For Preliminary Review Only: Clarification of the Requirements for Spacings
3. For Preliminary Review Only: Clarification of the Requirements for the Dielectric Voltage-Withstand Test
4. For Preliminary Review Only: Clarification of the Requirements for the Sequence of Testing
5. For Preliminary Review Only: Revision of the Requirements for Test Potential in the Dielectric Voltage-Withstand Test
6. For Preliminary Review Only: Revision of the Scope - Applicability to Other Standards
7. For Preliminary Review Only: Revision of the Requirements for Rubber Materials
8. For Preliminary Review Only: Clarification of the Requirements for Polymeric Materials
9. For Preliminary Review Only: Revision of Requirements for Class B Materials and the Addition of Requirements for Class A Materials
10. For Preliminary Review Only: Editorial Revision of the Requirements for the Accelerated Aging Test
11. For Preliminary Review Only: Clarification of the Requirements for the Temperature Test and for Markings
12. For Preliminary Review Only: Revision of the Requirements for the Flammability Test and Ratings
13. For Preliminary Review Only: Revision of the Marking Requirements for Devices for Disconnecting Use
14. For Preliminary Review Only: Addition of the Grounding Impedance Test
15. For Preliminary Review Only: Addition of the Ratings Section
16. For Preliminary Review Only: Revision of the Scope to Address UL 498 as a Supplement to this Standard
17. For Preliminary Review Only: Revision of the Requirements for Current-Carrying Parts