UL 38
Standard for Manual Signaling Boxes for Fire Alarm Systems

DETAILS
Edition Number:8SCC Approved:--
Edition Date:2008-07-03DOD Approved: --
Price Code:AANSI Approved: 2013-11-27
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover manual signaling boxes for fire alarm systems intended for permanent installation and used in ordinary locations in accordance with the National Electrical Code, NFPA 70, and the National Fire Alarm Code, NFPA 72.

    1.2 A manual signaling box is an assembly of a mechanism having electrical contacts designed to transmit a signal when an integral part is operated manually. The signaling contacts are intended to be connected to circuits of fire alarm systems. The types of boxes covered by these requirements are coded boxes and non-coded boxes, including signaling boxes, fire and guard's tour reporting stations, and guard's tour reporting stations for suppressed-signal tour combinations.

    1.3 A manual signaling box having a pre-wound signaling mechanism and equipped with a tripping electromagnet to permit automatic actuation by separate detectors, and similar combination devices, shall be evaluated with regard to compliance with the applicable requirements for both manual signaling boxes and electrically-actuated transmitters.

    1.4 A manual signaling box shall be constructed for use with system-control units, electrically-actuated transmitters, or similar units that will permit its application in compliance with applicable codes and standards of the National Fire Protection Association.

    1.5 These requirements do not cover electrically-actuated transmitters.

  • TABLE OF CONTENTS
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    • Cover
    • Transmittal
    • Table of Contents
      • Body
        • INTRODUCTION
          • 1 Scope
          • 2 General
            • 2.1 Components
            • 2.2 Units of measurement
            • 2.3 Undated references
        • CONSTRUCTION
          • 3 Enclosures
            • 3.1 General
            • 3.2 Cast metal enclosures
            • 3.3 Sheet metal enclosures
            • 3.4 Nonmetallic enclosures
          • 4 Electric Shock
          • 5 Corrosion Protection
          • 6 Field-Wiring System Connection
            • 6.1 General
            • 6.2 Field-wiring compartment
            • 6.3 Field-wiring terminals or leads
            • 6.4 Grounding terminals and leads
            • 6.5 Grounded supply terminals and leads
            • 6.6 Strain relief
          • 7 Internal Wiring
            • 7.1 General
            • 7.2 Wireways
            • 7.3 Splices
            • 7.4 Barriers
            • 7.5 Bushings
          • 8 Bonding for Grounding
          • 9 Components
            • 9.1 Current-carrying parts
            • 9.2 Coil windings
            • 9.3 Insulating material
            • 9.4 Printed-wiring boards
            • 9.5 Switches
            • 9.6 Lampholders and lamps
            • 9.7 Protective devices
            • 9.8 Mounting of components
            • 9.9 Operating components
            • 9.10 Capacitors
          • 10 Spacings
          • 11 Servicing Protection
          • 12 Outdoor-Use Signaling Boxes
        • PERFORMANCE
          • 13 General
          • 14 Normal Operation Test
            • 14.1 General
            • 14.2 Coded signaling boxes
            • 14.3 Non-coded signaling boxes
            • 14.4 Watchman's suppressed-signaling tour devices
          • 15 Circuit Emergency Operation
          • 16 Overcurrent and Undercurrent Operation Test
          • 17 Overload and Endurance Test
            • 17.1 General
            • 17.2 Watchman's suppressed-signaling tour devices
          • 18 Jarring Test
          • 19 Drop Test
          • 20 Temperature Test
          • 21 Electric Shock Current Test
          • 22 Corrosion Tests
            • 22.1 General
            • 22.2 Indoor-use signaling boxes
            • 22.3 Outdoor-use signaling boxes
          • 23 Transient Test
          • 24 Dielectric Voltage-Withstand Test
          • 25 Abnormal Operation Test
          • 26 Burnout Test
          • 27 Impact Test for Enclosures
          • 28 Polymeric Materials Tests
          • 29 Outdoor-Use Signaling Box Tests
            • 29.1 General
            • 29.2 Water spray test
            • 29.3 Variable temperature test
            • 29.4 Humidity test
        • MANUFACTURING AND PRODUCTION-LINE TEST
          • 30 Production-Line Dielectric Voltage-Withstand Test
        • MARKING
          • 31 General
          • 32 Installation Wiring Diagram
    • APPENDIX A