The revisions dated November 9, 2011 were issued to incorporate the following change in requirements:
• Proposal to Address Changes in the National Electrical Code.
• Calculating the Flexural Strength of the PVC Box Material.
• Clarification for the Nonmetallic Box Impact Acceptance Criteria.
• Editorial Correction.
• Revision to the Metric Equivalent of the Thread Diameter for the Number 8 Screw.
• Editorial Revisions to Add References to Sections 16A and 16B.
• Additional Requirements for Boxes Intended for Use in Finished Existing Structures Supplied with Clamps.
• Addition of Testing and Marking Requirements for Adjustable Fixture Rated Supporting Devices.
• Revision to Paragraph 31.1.4 Heat Conversion for the Flammability Test.
• Correct the Conversion of English to Metric Units in Paragraph 34.4.
• Clarification for Threaded or Unthreaded Holes for Screws in Molded Bosses in Paragraph 35.2.