UL 6:2004 pdf download Electrical Rigid Metal Conduit – Steel
1 Scope
1.1 These requirements cover electrical rigid metal conduit – steel (ERMC-S), elbows, couplings, andnipples for use as a metal raceway for installation of wires and cables in accordance with CSA C22.1Canadian Electrical Code, Part 1, and NFPA 70, National Electrical Code (see Reference ltem No. 1.Annex A), ERMC-S is provided with a zinc, zinc-based. nonmetallic, or other alternate corrosion-resistantexterior coating and an organic or zinc interior coating. lt is the user’s responsibility to determine theappropriate product for their application.
1.2 Non-ferrous or stainless steel conduit is covered by the standards listed in Reference ltem No. 2Annex A.
2 Normative references
2.1 Products covered by this standard shall comply with the reference installation codes and standardsas appropriate for the country where the product is to be used. When the product is intended for use inmore than one country, the product shall comply with the installation codes and standards for all countrieswhere it is intended to be used. A “Reference ltem No.” is provided at the point of use for each referencein this standard. See Annex A for a list of reference publications and the correlating list of reference itemnumbers to applicable country publications.
2.2 For undated references to standards. such reference shall be considered to refer to the latest editionand all revisions to that edition up to the time when this standard was approved. For dated references tostandards, such reference shall be considered to refer to the dated edition and all revisions published tothat edition up to the time the standard was approved
3 Definitions
3.1 The following definitions apply in this standard.
3.2 Bare threaded tube. A standard length of threaded tube intended to be coated with an alternatecorrosion-resistant coating and having a separate coupling.
3.3 Coating(s), alternate corrosion-resistant. A primary coating(s) other than one consisting solely ofzinc, which upon evaluation has demonstrated the ability to provide the level of corrosion resistancerequired on the exterior of conduit. See Clause 6.2.4.
Note: The coating(s) may include zinc.
3.4 Coating(s), organic. An interior coating(s), other than one consisting solely of zinc, which, uponevaluation, has demonstrated the ability to provide the level of corrosion resistance necessary wherethe coating is not subject to physical damage. See Clause 6.2.3.
Note: The coating(s) may include zinc.
3.5 Coating(s), zinc. A primary coating consisting solely of zinc, which upon evaluation hasdemonstrated the ability to provide the level of corrosion resistance required on the exterior or interior ofconduit as applicable. See Clause 6.2.2.
3.6 Elbow. A manufactured curved section of ERMC-S threaded on each end.