UL 6-2010 pdf download

UL 6-2010 pdf download.Electrical Rigid Metal Conduit – Steel.
2 Normative references 2.1 Products covered by this standard shall comply with the reference installation codes and standards as appropriate for the country where the product is to be used. When the product is intended for use in more than one country, the product shall comply with the installation codes and standards for all countries where it is intended to be used. A ″Reference Item No.″ is provided at the point of use for each reference in this standard. See Annex A for a list of reference publications and the correlating list of reference item numbers to applicable country publications. 2.2 For undated references to standards, such reference shall be considered to refer to the latest edition and all revisions to that edition up to the time when this standard was approved. For dated references to standards, such reference shall be considered to refer to the dated edition and all revisions published to that 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 alternate corrosion-resistant coating and having a separate coupling. 3.3 Coating(s), alternate corrosion-resistant. A primary coating(s) other than one consisting solely of zinc, which upon evaluation has demonstrated the ability to provide the level of corrosion resistance required 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, upon evaluation, has demonstrated the ability to provide the level of corrosion resistance necessary where the 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 has demonstrated the ability to provide the level of corrosion resistance required on the exterior or interior of conduit as applicable.
3.7 Electrical rigid metal conduit – steel (ERMC-S). ERMC-S is a threadable steel raceway of circular cross-section designed for the physical protection and routing of wire conductors and use as an equipment grounding conductor when installed utilizing appropriate fittings. 3.8 Finished conduit. A straight conduit with one coupling attached. 3.9 Nipple. A straight section of ERMC-S generally not more than 0.6 m (2 ft) long and threaded on each end. 3.1 0 Primary coating. A coating on the outside of the conduit for protection against corrosion. See Clause 5.3.1 .1 . 3.1 1 Sleeved coupling. A steel threaded coupling with a PVC coating that extends beyond the ends of the coupling to provide corrosion protection to the joints. 3.1 2 Straight conduit. A straight length of ERMC-S with the protective coating applied but without coupling. 3.1 3 Supplementary coating. A coating on the outside of the conduit, in addition to the primary coating, for protection against severe corrosive conditions. See Clause 5.3.5. 3.1 4 Threaded coupling. An internally threaded cylinder that connects two sections of ERMC-S. 4 Units of measurement 4.1 In Canada and Mexico, the values given in SI (metric) units shall be normative. Any other values given shall be for information purposes only. In the United States, the values stated in either SI units or inch-pound units shall be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems can result in nonconformance with the standard.
5.2 Finished conduit 5.2.1 The length of straight conduit, and the weight of finished zinc-coated conduit or bare threaded tube to be coated with an alternate corrosion-resistant coating with one coupling, shall be as indicated in Clause 5.2.2 and Table 5.2. Typical dimensions of conduit complying with the requirements in this standard are provided for information only in Annex B. 5.2.2 The production of lengths shorter or longer than the standard length specified in Table 5.2 shall be allowed, whether threaded or unthreaded and with or without couplings. Lengths other than standard lengths shall have a minimum acceptable weight proportional to the weights specified in Table 5.2. The length tolerances in Table 5.2 shall be applicable for standard and non-standard lengths. 5.2.3 Standard lengths of finished conduit with a primary coating of zinc shall be provided with one threaded coupling attached or shall have one assembled-on integral coupling. Conduit produced from bare threaded tube provided with an alternate corrosion-resistant coating shall have one separate coupling. 5.2.4 The exterior and interior surfaces of the finished conduit shall be free of poor coatings, hard scale, burrs, fins, or other defects. See Annex D.UL 6 pdf download.