UL 2158
Electric Clothes Dryers

DETAILS
Edition Number:5SCC Approved:--
Edition Date:2018-04-06DOD Approved: --
Price Code:CANSI Approved: 2018-04-06
Type:ulcsa

  • SCOPE

    1 Scope

    1.1 This Standard applies to electric clothes dryers intended to be used in nonhazardous locations in accordance with the Canadian Electrical Code, Part I (CE Code, Part I) and the (U.S.) National Electrical Code (NEC), on circuits having a nominal voltage not exceeding 600 V.

    Note: Wherever practical, for convenience, the term "appliance" has been used in lieu of "clothes dryer" or "machine".

    1.2 This Standard applies to both cord-connected and permanently connected appliances. The appliances covered by this Standard are intended for use by the general public not specifically trained in the use of the appliance, regardless of the mode by which its operation is initiated. They are for use in households and for commercial purposes, including appliances provided with coin-, ticket-, or card-operated mechanisms, laundry centers and combination washer-dryers. This Standard applies to tumbling clothes dryers and non-tumbling clothes dryers, such as drying cabinets, as well as both vented clothes dryers and non-vented clothes dryers, such as condensation-type and heat pump clothes dryers.

    1.3 This Standard does not apply to industrial and institutional type appliances. Industrial or institutional appliances are covered under the scope of Electric Commercial Clothes-Drying Equipment, UL 1240.

    Note: Industrial and institutional type appliances are not intended for use by the general public, but only by trained or supervised personnel.

  • TABLE OF CONTENTS
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    • Cover
    • Transmittal
    • UL Harmonized Standard Title Page
    • Table of Contents
      • Electric Clothes Dryers
        • 1 Scope
        • 2 Normative References
        • 3 Definitions
        • 4 General Requirements
        • 5 General Conditions for the Tests
          • 5.1 Voltage and frequency
          • 5.2 Test load
          • 5.3 Test fabric
          • 5.4 Thermocouples
          • 5.5 Laundry detergent
          • 5.6 Cheesecloth for heating and abnormal tests
          • 5.7 Test temperature
        • 6 Marking and Instructions
          • 6.1 Marking
          • 6.2 Instruction manual
        • 7 Protection Against Accessibility to Current-Carrying Parts
        • 8 Starting of Motor-Operated Appliances
        • 9 Power Input and Current
        • 10 Heating
          • 10.1 General
          • 10.2 Cord reels
          • 10.3 Appliances intended for closet installation
          • 10.4 Wall-insert or recessed appliances
          • 10.5 Appliances other than closet, wall-insert or recessed
          • 10.6 Household clothes dryer
          • 10.7 Commercial clothes dryer
          • 10.8 Drum light
          • 10.9 Exhaust duct system
          • 10.10 Surface temperatures
        • 11 Leakage Current and Insulation Resistance
          • 11.1 Leakage current
          • 11.2 Insulation resistance
        • 12 Cool Down Period
        • 13 Moisture Resistance
        • 14 Electric Strength
        • 15 Overload Protection of Transformers and Associated Circuits
        • 16 Abnormal Operation
          • 16.1 Grounded heating element
          • 16.2 Cord reels
          • 16.3 Wetting of electrical components
          • 16.4 Breakdown of belts or parts and the interruption of water supply
          • 16.5 Blockage of lint screen, exhaust, and condenser
          • 16.6 Load fire containment
          • 16.7 Base fire containment
          • 16.8 Nichrome wire test
        • 17 Stability and Mechanical Hazards
          • 17.1 Automatic restarting of motor
          • 17.2 Stability (freestanding appliances)
          • 17.3 Wall-mounted appliances
          • 17.4 Appliance stands
          • 17.5 Sharp edges, projections, and moving parts
          • 17.6 Entrapment
          • 17.7 Contact with rotating tumbler
        • 18 Mechanical Strength
          • 18.1 Frame and enclosure
          • 18.2 Back covers
        • 19 Construction
          • 19.1 Current-carrying parts
          • 19.2 Electrical insulation
          • 19.3 Thermal insulation
          • 19.4 Overflow pipes
          • 19.5 Bottom openings
          • 19.6 Plumbing requirements
          • 19.7 Condensation type dryers
          • 19.8 Ventilation openings
        • 20 Internal Wiring
          • 20.1 General
          • 20.2 Splices and connections
          • 20.3 Separation of circuits
          • 20.4 Overcurrent protection
        • 21 Components
          • 21.1 General requirements for components
          • 21.2 Mechanical assembly
          • 21.3 Capacitors
          • 21.4 Field-installed devices and accessories
          • 21.5 Heating elements
          • 21.6 Lampholders
          • 21.7 Motors
          • 21.8 Motor overload-protective devices
          • 21.9 Protective devices
          • 21.10 Receptacles
          • 21.11 Seals and diaphragms
          • 21.12 Switches
          • 21.13 Controls
          • 21.14 Solenoids
          • 21.15 Switches and controls
          • 21.16 Overcurrent protection
          • 21.17 Electrically operated valves
          • 21.18 Terminals and connectors
          • 21.19 Pumps
          • 21.20 Insulating devices
          • 21.21 Adhesives used to secure parts
          • 21.22 Transformers and power supplies
          • 21.23 Button or coin cell batteries of lithium technologies
        • 22 Supply Connection and External Flexible Cords
          • 22.1 General
          • 22.2 Permanently connected appliances
          • 22.3 Cord-connected appliances
          • 22.4 Bushings
        • 23 Terminals for External Conductors
        • 24 Provision for Grounding
          • 24.1 General
          • 24.2 Neutral-grounding link
          • 24.3 Bonding for grounding
          • 24.4 Continuity of grounding circuit
          • 24.5 Grounding terminals and leads
        • 25 Screws and Connections
        • 26 Creepage Distances, Clearances, and Distances Through Insulation
          • 26.1 Spacings
          • 26.2 Alternate spacings – clearances and creepage distances
        • 27 Resistance to Rusting and Corrosion
        • 28 Polymeric Materials
          • 28.1 General
          • 28.2 Mould stress relief
          • 28.3 Horizontal burning rate
          • 28.4 Flammability
          • 28.5 6.8 J impact (ambient and low temperature)
          • 28.6 Static load
          • 28.7 56.7 J impact
          • 28.8 Thermal cycling
          • 28.9 Crush resistance
          • 28.10 Hot-wire ignition
          • 28.11 Thermal aging
          • 28.12 Volume resistivity
          • 28.13 Enclosure flammability – large mass consideration
          • 28.14 Abnormal operation test on enclosures
          • 28.15 Abnormal operation test on functional polymeric parts
          • 28.16 High-current arc ignition
        • 29 Manufacturing and Production Tests
          • 29.1 Plumbing system leakage test
          • 29.2 Grounding continuity test
          • 29.3 Electric strength test
        • TABLES
        • FIGURES
    • Plumbing Requirements For Household Laundry Equipment
    • Annex A (informative)