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Standard 50, Edition 13

Enclosures for Electrical Equipment, Non-Environmental Considerations

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Standard 50, Edition 13 Edition Date: July 12, 2019 $0.00
Summary of Topics b0050_13_20190712_sum.html

Subject 50

Bulletin Dated: July 12, 2019


The following changes in requirements to the Standard for Enclosures for Electrical Equipment, Non-Environmental Considerations, UL 50, are being proposed:

1. Junction and Pull Boxes for Use in Air Handling Spaces

2. Adhesives Used to Secure Observation Windows

3. Add Definitions of Cabinet, Cutout Box, Junction Box, and Pull Box

4. Restrictions on Use of Sheet Metals Screws

5. Junction and Pull Boxes Less Than 100 Cubic Inches

6. Clarification of Annex C for Components

7. Clarification of Closure Opening for Polymeric Materials

8. New Annex E for Adhesives, Enclosures, Non-mechanical Means of Securement

9. Requirements for Encapsulated Enclosures

10. Exemption of Crush and Impact Tests if Using Safety or Wire Mesh Glass in Large Openings

Back to Standard 50, Edition 13

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