CANENA THC 23B1

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CANENA THC 23B-1

• IEC Work Program

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THC 23B-1 Work Program

• Objectives
• Work Phases
• Examples
• Current Status
• Plan implementation

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Objectives

• Single trinational standard, harmonized with IEC
  60670 to the maximum extent possible
• Develop appropriate changes to the national
  installation codes to facilitate the
  harmonization objective

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Work Phases

• Developmental
• Technical Review
• Implementation

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Current Status

• Now in the Technical Review stage
• Harmonizing of flammability requirements and
  tests
• Amendments to trinational metal box standard
• Future work Comparison of wet locations tests
  and IPX5 rating

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Examples of changes to be proposed for IEC 60670-1

• Surface condition
• Separately supplied box supports
• Boxes used outdoors

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National standard sheet considerations - Examples

• Dimensions
• Provisions for earthing
• Protection against ingress of solid objects

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Implementation Phase

• Maintenance cycle may not need to be observed.
• Proposals from THC ready in about 2 years
• Submitted through a National Committee

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Questions?