UL 50E
Enclosures for Electrical Equipment, Environmental Considerations

DETAILS
Edition Number:2SCC Approved:--
Edition Date:2015-10-16DOD Approved: --
Price Code:CANSI Approved: 2015-09-30
Type:ulcsance

  • SCOPE

    1 Scope

    1.1 This standard applies to enclosures for electrical equipment intended to be installed and used in non-hazardous locations in accordance with the Canadian Electrical Code, Part I, CSA C22.1, the provisions of the National Electrical Code, NFPA 70, and the provisions of Mexico's Electrical Installations, NOM-001-SEDE, as follows:

    a)    Enclosures for indoor locations, Types 1, 2, 5, 12, 12K, and 13; and

    b)    Enclosures for indoor or outdoor locations, Types 3, 3X, 3R, 3RX, 3S, 3SX, 4, 4X, 6, and 6P.

    1.2 This standard covers additional environmental construction and performance requirements for enclosures. The general requirements for enclosures are contained in CSA C22.2 No. 94.1, UL 50, and NMX-J-235/1-ANCE (See Annex b, Ref. No. 10) or the end-use product standards that are to be used in conjunction with this standard.

    1.3 This standard does not cover the requirements for protection of devices against conditions such as condensation, icing, corrosion, or contamination that may occur within the enclosure or that may enter via conduit or unsealed openings.

    1.4 Where an individual product standard contains requirements that are at variance with those of this standard, the requirements of the individual product standard take precedence.

  • TABLE OF CONTENTS
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    • Cover
    • Transmittal
    • UL Harmonized Standard Title Page
    • Table of Contents
      • Enclosures for Electrical Equipment, Environmental Considerations
        • 1 Scope
        • 2 Units of Measurement
        • 3 Components
        • 4 Normative References
        • 5 Definitions
        • 6 Enclosure Types and Applications
        • 7 Construction
          • 7.1 Polymeric materials
          • 7.2 Corrosion protection
          • 7.3 Openings
          • 7.4 Conduit connection
          • 7.5 External operating mechanisms
          • 7.6 Access to interior
          • 7.7 Gaskets
        • 8 Tests
          • 8.1 General
          • 8.2 Drip test
          • 8.3 Rain test
          • 8.4 Dust test
          • 8.5 External icing test
          • 8.6 Hosedown test
          • 8.7 Indoor corrosion protection
          • 8.8 Outdoor corrosion protection
          • 8.9 Additional corrosion protection for type 3X, 3RX, 3SX, 4X and 6P
          • 8.10 Submersion test
          • 8.11 Pressure test
          • 8.12 Oil exclusion test
          • 8.13 Gasket tests
          • 8.14 Rod entry test
          • 8.15 Misalignment test
          • 8.16 Water exposure and immersion
        • 9 Marking
          • 9.1 General
          • 9.2 Type designations
          • 9.3 Supplemental markings
          • 9.4 Location
          • 9.5 Orientation
          • 9.6 Equipment openings
          • 9.7 Drainage openings
          • 9.8 Screws and screw type fasteners
        • 10
        • 11
    • Annex A – Standards For Components(Normative)
    • Annex B – Reference Standards (Normative)
    • Annex C – Permanence Of Marking (Normative In The United States Only)
    • Annex D – Water Immersion Test (Normative)