Clarification of Requirements in Clause 7.1.6 for Multi-unit Ganged Installation Derating Factors Addition of Requirements for Manufacturer’s Recommended Terminal Tightening to Paragraph 7.2.7 Inclusion of References to "Replacement or Retrofit Application Only" in Paragraph 7.2.6 Editorial corrections; Clauses 1.1, 5.5.11 and A1.1 As noted in the Commitment for Amendments statement located on the back side of the title page, UL and CSA are committed to updating this harmonized standard jointly.