UL 1683
Outline of Investigation for Electric Heating Products For Installation Under Floor Coverings

DETAILS
Edition Number:2SCC Approved:--
Edition Date:2013-09-20DOD Approved: --
Price Code:AANSI Approved: --
Type:outline

  • SCOPE

    1 Scope

    1.1 These requirements cover fixed electric heating products for installation under floor coverings and above a subfloor, in accordance with the National Electrical Code, NFPA 70, Article 424, for use on system voltages not exceeding 600 V.

    1.2 These requirements cover electric heating products of the type specified in 1.3, only when installed per 1.4.

    1.3 These requirements cover the following product types:

    a)    Electric heating cables and cables on carriers;

    b)    Flexible and rigid electric heating panels, mats, and heating panel sets;

    c)    Electric flexible heating products, including carbon film-type constructions; and

    d)    Any combination of the above.

    1.4 These requirements cover one or more of the following installation types:

    a)    Above a subfloor, the subfloor being constructed of wood, concrete, or other material;

    b)    Directly underneath a floor covering such as tile, carpet, wood, laminate, sheet vinyl, decorative concrete, or other floor covering;

    c)    Embedded in and covered with a layer of thinset, mortar, or the like under a floor covering;

    d)    Not embedded, and in direct contact with combustible or combustion resistant material subfloor or floor covering, except as noted in 1.7(j);

    e)    In dry or damp locations per the National Electrical Code, NFPA 70; and

    f)    Any combination of the above.

    1.5 These requirements do not cover electric space, floor, or ceiling heating products that are fully addressed by individual requirements that are separate from this Outline, including:

    a)    Electric heating cables that are within the scope of the Standard for Electric Space Heating Cables, UL 1673; and

    b)    Electric heating panels and heating panel sets that are within the scope of the Standard for Electric Heating Panels and Heating Panel Sets, UL 1693.

    1.6 These requirements do not cover electric heating products that are covered by individual requirements that are separate from this Outline. Other related standards include:

    a)    Electrical Resistance Heat Tracing for Commercial and Industrial Applications, UL 515;

    b)    Movable and Wall- or Ceiling-Hung Electric Room Heaters, UL 1278;

    c)    Outline of Investigation for Mobile Home Pipe Heating Cables, UL 1462;

    d)    Outline of Investigation for Roof and Gutter De-Icing Cable Units, UL 1588;

    e)    Outline of Investigation for Residential Pipe Heating Cables, UL 2049;

    f)    Fixed and Location-Dedicated Electric Room Heaters, UL 2021; and

    g)    Electric Heating Appliances, UL 499.

    1.7 These requirements do not cover the following:

    a)    Heating products connected to the supply by use of a flexible cord with attachment plug;

    b)    Heating products that are movable after installation;

    c)    Heating products with integral means of producing air flow;

    d)    Heating products manufactured and sold as an integral part of a floor covering materials such as heated floor tiles, heated carpet, and heated laminate floor;

    e)    Heating products intended for use outdoors;

    f)    Heating products intended for installation on, in, or above a ceiling;

    g)    Heating products intended for installation in or under a concrete subfloor;

    h)    Heating products intended for installation under a wood subfloor;

    i)    Heating products employing self-regulating or positive temperature coefficient (PTC) heater design; and

    j)    Flexible film-type products not embedded, and installed directly in contact with rigid or flexible floor coverings.

    1.8 These requirements do not cover additional grounding or shielding that may be required during installation in accordance with local or national codes.

    1.9 These requirements do not cover switches, transformers, power supplies, controls (i.e. temperature) or protective devices (i.e. ground fault protection) that are installed separate from the heating equipment as part of the complete heating system installation, unless inherent to the heating product. Those devices are covered by individual requirements that are separate from this Outline.

  • TABLE OF CONTENTS
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    • Outline Title Page
    • Table of Contents
      • Body
        • INTRODUCTION
          • 1 Scope
          • 2 Units of Measurement
          • 3 References
          • 4 Glossary
        • CONSTRUCTION
          • 5 General
          • 6 Enclosure
          • 7 Flammability
            • 7.1 Flexible heating products, heating cables, and cables with carrier
            • 7.2 Rigid heating products with polymeric enclosures
            • 7.3 Heating products directly in contact with carpet
          • 8 Connectors
          • 9 Supplemental Insulation, Insulating Bushings and Assembly Aids
          • 10 Current-Carrying Parts
          • 11 Non-Heating Leads
          • 12 Free Non-Heating Leads
          • 13 Heating Leads
          • 14 Splices and Connections
          • 15 Electrical Insulation
          • 16 Electrical Spacings
          • 17 Grounding
            • 17.1 All products
            • 17.2 Heating cables
          • 18 Accessories
        • PERFORMANCE
          • ALL HEATING PRODUCTS
          • 19 General
          • 20 Test Voltage
          • 21 Normal Temperature Test
            • 21.1 General
            • 21.2 Wood subfloor installation
            • 21.3 Concrete subfloor installation
            • 21.4 Installation
            • 21.5 Test procedure
          • ELECTRIC HEATING CABLES (INCLUDES CABLES ON A CARRIER)
          • 22 Power Input Test
          • 23 Dielectric Voltage-Withstand Test
          • 24 Insulation Resistance Test
          • 25 Splice Test
          • 26 Grounding Component Ampacity Test
          • ALL ELECTRIC HEATING PANELS AND HEATING PANEL SETS (INCLUDES FLEXIBLE FILM-TYPE AND RIGID PANELS)
          • 27 Power Input Test
          • 28 Contact Loss Test
          • FLEXIBLE HEATING PANELS AND HEATING PANEL SETS (FILM-TYPE HEATERS)
          • 29 Dielectric Voltage-Withstand Test (Dry)
          • 30 Dielectric Voltage-Withstand Test (In Water)
          • 31 Cold Bend Test
          • 32 Mechanical Abuse Tests
            • 32.1 General
            • 32.2 Conditioning
          • 33 Scratch Test
          • 34 Non-heating Conductor (Busbar) Overload Test
          • RIGID HEATING PANELS AND HEATING PANEL SETS
          • 35 Dielectric Voltage-Withstand Test (Dry)
          • 36 Dielectric Voltage-Withstand Test (Water)
          • 37 Impact Bend Test
          • 38 Drop Test
          • EMBEDDED HEATING PRODUCTS
          • 39 General
          • 40 Performance
          • ELECTRIC HEATING PRODUCTS TO BE INSTALLED UNDER OR IN DECORATIVE CONCRETE FLOORING
          • 41 General
          • 42 Performance
          • ELECTRICAL HEATING PRODUCTS TO BE INSTALLED IN DIRECT CONTACT WITH SOLID SURFACE FLOOR COVERING (INCLUDES NON-EMBEDDED INSTALLATION UNDER TILE, LAMINATE, HARDWOOD)
          • 43 General
          • 44 Performance
          • ELECTRIC HEATING PRODUCTS TO BE INSTALLED IN DIRECT CONTACT WITH CARPET
          • 45 General
          • 46 Performance
          • 47 Overvoltage Test
          • 48 Continuous Static Loading Test
          • 49 Spot Load Temperature Test
          • 50 Impact Test
          • 51 Crush Test
          • 52 Cold Bend Test
          • 53 Cold Crease Test
          • 54 DC Resistance Test
          • 55 Mechanical Strength Test
          • 56 Immersion Test
          • 57 Penetration Test
          • 58 Connections Test
          • 59 Flame Retardant Tests
          • 60 Aging Test and Dielectric Voltage-Withstand Test (In Water)
          • 61 Dynamic Loading Test
          • WET LOCATION HEATING EQUIPMENT - HEATING CABLE BASED CONSTRUCTION
          • 62 General
          • 63 Performance
            • 63.1 Dielectric voltage-withstand test – in water (complete assembly)
            • 63.2 Long-term insulation resistance in water test (heating cable and non-heating cables)
            • 63.3 Long-term resistance to water test (complete assembly)
            • 63.4 Resistance to water test (complete assembly)
          • 64 Markings
          • 65 Instructions
        • MANUFACTURING AND PRODUCT TESTS - ALL PRODUCTS
          • 66 Details
        • RATINGS - ALL PRODUCTS
          • 67 Details
        • MARKINGS - ALL PRODUCTS
          • 68 Details
            • 68.1 General
            • 68.2 Electric Heating Cables and Cables on Carrier
            • 68.3 Electric heating panels
        • INSTALLATION AND OPERATING INSTRUCTIONS - ALL PRODUCTS
          • 69 Details