Browse & Buy UL Standards
Standard 1008, Edition 8

Transfer Switch Equipment

UL CSDS Proposal
Standard 1008, Edition 8 Edition Date: January 19, 2018
Summary of Topics b1008_8_20180119_sum.html

Subject 1008

Bulletin Dated: January 19, 2018


The following changes in requirements to the Standard for Safety for Transfer Switch Equipment, UL 1008, are being proposed:

1. Revision to Add Recreational Vehicle Transfer Switches to the Scope of UL 1008

2. Revisions to Address the Grounding and Bonding of Neutral Circuits

3. Revision to the Overload, Endurance, and Short Circuit Testing

4. Miscellaneous Revisions Regarding Inlet Assemblies, Mechanical Interlocking of Single Pole Inlets and Readily Accessible Service Disconnect Switches

5. Revisions Regarding the Use of "Circuit Breaker Based" Transfer Switches and Compliance with Service Disconnecting Requirements

6. Revision for Consistency with UL 50E Rain Test

7. Revisions to Annex E to Cover Freestanding Complete Packaged Fire Pump Power Transfer Units

8. Revisions to Address System Available Fault Calculations for Momentary Paralleling Situations

9. Clarification of Marking Requirements

10. Revised Requirements for Monitoring the Temperature on Inlets

Back to Standard 1008, Edition 8

The cost to purchase this Standard varies depending on whether you are ordering a hardcopy, PDF or combination of the two. We also offer two different types of subscriptions: a one year and a three year.

You will be able to choose your purchase options on the following pages.


You have one or more subscriptions that will expire soon.


You have one or more licenses to assign