UL 1838
Standard for Low Voltage Landscape Lighting Systems

DETAILS
Edition Number:3SCC Approved:--
Edition Date:2003-01-13DOD Approved: --
Price Code:AANSI Approved: 2017-04-12
Type:ulstd

  • SCOPE

    1 Scope

    1.1 The requirements in this standard apply to a low-voltage landscape lighting system and components that consist of an isolating type power unit, low voltage cable or flexible cord, and luminaires. The equipment is intended to be installed in accordance with the National Electrical Code, ANSI/NFPA 70, Article 411.


    1.1 revised February 24, 2014

    1.2 Landscape lighting power units covered by this standard have a maximum output circuit voltage as specified in Table 2a.1.


    1.2 revised effective August 7, 2009

    1.3 This standard covers power units where each output circuit is rated maximum 25 A and 300 VA.


    1.3 revised August 7, 2007

    1.4 This standard covers landscape lighting system luminaires and other system components that are intended for use on circuits rated maximum 25 A 300 VA, and the voltage specified in Table 2a.1.


    1.4 added August 7, 2007

    1.5 The luminaires and low voltage system components covered by this standard are intended for garden, walkway, patio areas, or similar outdoor locations and for certain indoor locations such as atriums and shopping malls. The power units are to be installed indoors or outdoors in accordance with the marking on the product.


    1.5 revised January 13, 2015

    1.6 This standard covers luminaires and low voltage system components intended for use submersed in or floating on:

    a)    portable self-contained fountains; and

    b)    ponds and other natural and artificially made body of water within the scope of Article 682 “Natural and Artificially Made Bodies of Water” of the National Electrical Code, NFPA 70.


    1.6 added effective August 7, 2009

    1.7 Throughout this standard, all requirements identified as applicable to luminaires and low voltage system components used submerged in or floating on ponds also apply to luminaires and low voltage system components intended for use in other bodies of water covered by Article 682 of the National Electrical Code, ANSI/NFPA 70. Further, markings, instructions, and other product specific information shall be permitted to refer to one or more bodies of water covered by Article 682 in addition to ponds or instead of ponds.


    1.7 added effective August 7, 2009

    1.8 The luminaires and low voltage system components covered by this standard are not suitable for use in swimming pools, spas, other bodies of water intended to contain immersed persons, or permanent fountains covered by Part V of Article 680 of the National Electrical Code, ANSI/NFPA 70. Luminaires intended for use in these locations are covered by the Standard for Underwater Luminaires and Junction Boxes, UL 676. Fountains covered by Part V of Article 680 of the National Electrical Code, ANSI/NFPA 70 are permanent, not self-contained, not portable, or exceed 5 feet (1.5 m) in any dimension.


    1.8 added effective August 7, 2009

    1.9 Fluorescent and high intensity discharge lighting systems will be investigated in accordance with the applicable requirements in this standard and with the applicable requirements in the Standard for Luminaires, UL 1598, as intended.


    1.9 added August 7, 2007

    1.10 Light emitting diode (LED) components and subassemblies, such as drivers, control gear, and LED arrays, shall comply with the applicable requirements of the Standard for Lighting Emitting Diode (LED) Equipment for Use in Lighting Products, UL 8750.


    1.10 added July 16, 2012

  • TABLE OF CONTENTS
    Expand All

    • Cover
    • Transmittal
    • Table of Contents
    • UL Foreword
      • Body
        • Part
          • INTRODUCTION
          • 1 Scope
          • 2 Glossary
          • 2A Electric Shock
          • 3 Components
          • 4 Units of Measurement
          • 5 Undated References
          • 6 Organization and Application
        • PART 1 – POWER UNITS
          • MECHANICAL CONSTRUCTION
          • 7 General
          • 8 Enclosures
          • 9 Metal Thickness
            • 9.1 Sheet metal
            • 9.2 Extrusions
            • 9.3 Cast metal
          • 10 Corrosion Protection
          • 11 Open Holes
          • 12 Drain Holes
          • 13 Openings
          • 14 Gaskets and Bushings
          • ELECTRICAL CONSTRUCTION
          • 15 General
            • 15.1 Class 2 Circuits Within Power Unit
            • 15.1A Class 2 Power Units
            • 15.2 Wiring devices
            • 15.3 Internal wiring connections
            • 15.4 Insulation
            • 15.5 Prevention of wire damage
          • 16 Device and Conductor Ratings
            • 16.1 Voltage
            • 16.2 Current
          • 17 Switches and Relays
          • 18 Convenience Receptacles
          • 19 Wiring and Conductors
          • 20 Protective Devices
          • 21 Printed Wiring Boards
          • 22 Separation of Circuits
            • 22.1 General
            • 22.2 Separation of Conductors
            • 22.3 Output circuit isolation
          • 23 Electrical Spacings
          • 24 Power Supply and Output Circuit Connections
            • 24.1 Power supply connection method
            • 24.2 Power supply conduit connection and conductor connection provisions
            • 24.3 Power supply cord
            • 24.4 Output circuit connection provisions
            • 24.5 Deleted August 7, 2007
          • 25 Grounding and Bonding
            • 25.1 Grounding
            • 25.2 Bonding
          • 26 Water Shields
          • PERFORMANCE
          • 27 Test Parameters
          • 28 Input and Output Tests
            • 28.1 Input test
            • 28.2 Maximum output test
          • 29 Overload Test
          • 30 Burnout Test
          • 31 Endurance Test
          • 32 Dielectric Voltage Withstand Test
          • 33 Temperature Test
          • 34 Grounding Continuity Test
          • 35 Leakage Current Test
          • 36 Leakage Current Test Following Humidity Conditioning
          • 37 Weather Tests
            • 37.1 General
            • 37.2 Impact conditioning
            • 37.3 General – test conditions
            • 37.4 General – test results
            • 37.5 Sprinkler test
            • 37.6 Immersion test
            • 37.7 Gasket tests
            • 37.8 Gasket adhesion test
            • 37.9 Rain test
          • 38 Strain Relief Test
          • 39 Screw Torque Test
          • 40 Polymeric Enclosure Conduit Connection Tests
            • 40.1 General
            • 40.2 Pullout
            • 40.3 Torque
            • 40.4 Bending
          • 41 Tests on knockouts
          • 42 Impact Test on Units With Open Holes
          • 43 Component Fault Test
          • 44 Short Circuit Test
          • 45 Limited Short Circuit Test
          • MANUFACTURING AND PRODUCTION TESTS
          • 46 Dielectric Voltage Withstand Test
          • 47 Polarity Test
          • 48 Continuity of Grounding Connection Test
          • RATINGS
          • 49 Details
          • MARKING
          • 50 Details
          • 51 Installation Instructions
        • PART 2 – EQUIPMENT CONNECTED TO THE POWER UNIT OUTPUT
          • CONSTRUCTION
          • 52 General
          • 53 Output Circuit Wiring and Connections
            • 53.1 General
            • 53.2 Internal wiring
            • 53.3 Main low voltage cable
            • 53.4 Unit low voltage cable
          • PERFORMANCE
          • 54 Temperature
          • 55 Insulation-Piercing Terminal Temperature Test
          • MARKING
          • 56 General
          • 57 Installation Instructions
        • PART 3 – TUNGSTEN-HALOGEN LUMINAIRES
          • INTRODUCTION
          • 58 General
          • CONSTRUCTION
          • 59 Lamp Containment Barrier
          • PERFORMANCE
          • 60 Adhesively Secured Lamp Containment Barrier Test
          • 61 Lamp Containment Adhesive Support Test
          • 62 Abnormal Operation Tests
            • 62.1 General
            • 62.2 Severe condition
            • 62.3 Vertical surface
            • 62.4 Overlamping
          • 63 Polymeric Lamp Containment Barrier Test
            • 63.1 General
            • 63.2 Test method
          • MARKING
          • 64 General
          • 65 Instructions
        • PART 4 – POND AND SMALL DECORATIVE FOUNTAIN LUMINAIRES AND FITTINGS
          • INTRODUCTION
          • 66 General
          • CONSTRUCTION
          • 67 Water Barriers
            • 67.1 General
            • 67.2 Gaskets
            • 67.3 Adhesives and Sealants
          • 68 Immersed Low Voltage Cable
          • PERFORMACE
          • 69 Temperature Test
          • 70 Water Leakage Test
            • 70.1 General
            • 70.2 Impact conditioning
            • 70.3 Water leakage
          • MARKING
          • 71 General
          • INSTRUCTIONS
          • 72 Installation Instructions
    • Appendix A