UL 1242
Standard for Electrical Intermediate Metal Conduit - Steel

DETAILS
Edition Number:4SCC Approved:--
Edition Date:2006-02-16DOD Approved: 1984-05-21
Price Code:BANSI Approved: 2014-03-05
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover steel electrical intermediate metal conduit (IMC), nipples, elbows, and couplings. This conduit is provided in trade sizes 1/2 – 4 (16 – 103), for use as a metal raceway for the installation of wires and cables in accordance with the National Electrical Code (NEC), NFPA 70. The values in parentheses are metric designators of conduit.

    1.2 Steel intermediate metal conduit is provided both internally and externally with an acceptable level of corrosion resistance in normally corrosive environments. Reference 6.1 for details regarding protective coatings.


    1.2 revised March 5, 2014

  • TABLE OF CONTENTS
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    • Cover
    • Transmittal
    • Table of Contents
      • Body
        • INTRODUCTION
          • 1 Scope
          • 2 Units of Measurement
          • 3 References
          • 4 Glossary
        • CONSTRUCTION
          • 5 General
          • 6 Protective Coatings
            • 6.1 General
            • 6.2 Surface treatments
            • 6.3 Supplementary coatings
            • 6.4 Alternate corrosion-resistant coatings
          • 7 Threading and Chamfering
            • 7.1 General
            • 7.2 Protection of threads
            • 7.3 Dimensions of threads
            • 7.4 Taper of threads
          • 8 Thread Gauging
          • 9 Straight Conduit
          • 10 Nipples
          • 11 Elbows
          • 12 Couplings
        • PERFORMANCE
          • 13 Identification of Compounds
          • 14 Bending
            • 14.1 Ambient temperature
            • 14.2 Low temperature
          • 15 Protective Coatings
            • 15.1 Zinc coating
            • 15.2 Alternate corrosion-resistant coatings
            • 15.3 Organic coatings
          • 16 Tensile Strength and Adhesion
          • 17 Cold Impact Test
          • 18 Flammability Test
            • 18.1 General
            • 18.2 Preparations
            • 18.3 Conduct of the test
          • 19 Beam-Strength
          • 20 Threaded-Conduit Pullout
        • MARKINGS
          • 21 Details
        • EXAMINATION OF FINISHED PRODUCT BY MANUFACTURER
          • 22 General