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