SUN - UL 50 harmonized with CSA C22.2 No.94.1-07

Impact Statement: A review of all Listing Reports is necessary to determine which products comply with the new/revised requirements and which products will require re-evaluation and test. NOTE: Effective immediately, this revised standard will be exclusively used for evaluation of new products unless the Applicant requests in writing that current requirements be used along with their understanding that their listings will be withdrawn on the Effective Date of September 4, 2015 unless product is found to comply with the new/revised requirements.

Fees: So that production of your products bearing the Listing Mark will not be interrupted, at some point between 5 –10 months before the Effective Date, our Engineers will begin reviewing your Listing Report (s) for compliance with these new/revised requirements. Either the Listing Report (s) will be revised to show compliance or a Findings Letter will be prepared and sent to your attention along with a quote for necessary re-evaluation and testing. This initial review of your Listing Report (s) will be covered by a direct billing project:

Construction review: 1 day
Testing: 1-2 days

Overview: This revision for Safety for Enclosures for Electrical Equipment, Non-Environmental Considerations, UL 50 harmonized with CSA C22.2 No.94.1-07. 

This revision to ANSI/UL 50 is being issued to update the UL approval date per a ULStandards reaffirmation of ANSI/UL 50, CSA C22.2 No. 94.1-07 and to extend the effective date of Clauses 6.3.3.1, 6.10.2.1, 6.10.3.1, 7.8.1, 8.4.1 – 8.4.4, 8.9.1 – 8.9.2.1 and 10.1.3.

Specific details of the new/revised clauses of the standard are found in the table below.

Action Required:

Information – Please submit the following information to assist with determining compliance:
-Installation manual
-Differences and similarities if more than one model to select worse case model representation
-Markings

Samples – Please submit the following representative sample of product constructions to assist with determining compliance:

Two samples of worse case model representation of complete enclosures or sample plates that fulfill requirements of Figure 9 of standard.

Current Listings – Please immediately identify any current Listing Reports or products that are no longer active and should be removed from our records.