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Standard 1673, Edition 3

Standard for Electric Space Heating Cables

UL Bulletin
Standard 1673, Edition 3 Edition Date: July 27, 2012 $203.00-$254.00
Summary of Topics m1673_3_20120727_sum.html

Subject 1673 (1693)

Bulletin Dated: July 27, 2012


The following topics were discussed at the meeting of the Standards Technical Panel for Electric Radiant Heating Panels and Cables:

1. International Harmonization

2. Review of the Goal of UL Standards for Electric Radiant Heating Cables and Panels

3. Radiant Heating Products in the U.S.: a) Categorization of Product Types; b) Definition of Radiation vs. Other Means of Heat Transfer (e.g. Heated floor might be considered conductive or convective)

4. U.S. Requirements for Radiant Heating Products (UL 1673, UL 1693, UL 1683): Mapping of each product type to a Standard

5. NEC Requirements for Radiant Heating Equipment: a) NEC sections that address heating cables and panels; b) Alignment and gaps between NEC and UL 1673, 1683, 1693; c) Future proposals for NEC changes

6. CEC Requirements for Radiant Heating Equipment

7. CSA Standards/Canadian Requirements for Radiant Heating Equipment

8. IEC Requirements for Radiant Heating Equipment: Comparison of Standards developed by IEC, Japan and New Zealand

9. UL 1683 Scope and Approval Process

10. Specific Technical Topics: a) Grounding vs. Shielding, Functional vs. Operational; b) Wet Location, Damp Location, Outside; c) Wattage Rating Linear vs. Per Square (SI/Metric); d) Low Voltage and Isolated Secondary; e) Fault Protection, GFCIs, AFCIs, or Other; f) Thermostats and/or Control Device; g) Insulated Conductors; h) Cold Leads; i) R Value and Vapor Barrier Threshold of Safety and Enforcement of Installation Instructions; j) Adjacent Material Compatibility (Installation/Application); k) Product Construction Material Compatibility and MTBF; l) Flame Spread Rating; m) Dynamic and Static Mechanical Withstand

11. Identifying Known Field Product Issues Not Currently Covered in Associated Standard

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