1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 209 Cellular Metal Floor Raceways and Fittings STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MAT
2、ERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Cellular Metal Floor Raceways and Fittings, UL 209 Tenth Edition, Dated December 20, 2011 Summary of Topics The following revisions are being issued for the Tenth Edition of UL 209: 1.
3、 Revision to Installation Instructions (19.1) Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. The revised requirements are substantially in accordance with Proposal(s) on this subject dated April 1, 2016. All righ
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6、t of the use of or the inability to use this Standard, even if UL or an authorized UL representative has been advised of the possibility of such damage. In no event shall ULs liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. Users of the elec
7、tronic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless from and against any loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Stand
8、ard on the purchasers computer system. MAY 27, 2016 UL 209 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 27, 2016 UL 209 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT
9、 PERMISSION FROM UL DECEMBER 20, 2011 (Title Page Reprinted: May 27, 2016) 1 UL 209 Standard for Cellular Metal Floor Raceways and Fittings First Edition December, 1956 Second Edition October, 1969 Third Edition July, 1973 Fourth Edition April, 1978 Fifth Edition November, 1981 Sixth Edition Februar
10、y, 1987 Seventh Edition November, 1995 Seventh Edition November, 1995 Eighth Edition December, 1998 Ninth Edition November, 2005 Tenth Edition December 20, 2011 This ANSI/UL Standard for Safety consists of the Tenth Edition including revisions through May 27, 2016. The most recent designation of ANS
11、I/UL 209 as an American National Standard (ANSI) occurred on May 27, 2016. ANSI approval for a standard does not include the Cover Page, Transmittal Pages and Title Page. The Department of Defense (DoD) has adopted UL 209 on May 18, 1987. The publication of revised pages or a new edition of this Sta
12、ndard will not invalidate the DoD adoption. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) at http:/. ULs Standards for Safety ar
13、e copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2016 UNDERWRITERS LABORATORIES INC. ANSI/UL 2
14、09-2016UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL DECEMBER 20, 2011 CELLULAR METAL FLOOR RACEWAYS AND FITTINGS - UL 209 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMIS
15、SION FROM UL CONTENTS INTRODUCTION 1 Scope .4 2 General 4 2.1 Undated references .4 2.2 Units of measurement .4 CONSTRUCTION 3 General 5 4 Grounding and Bonding .6 5 Protective Coating 6 6 Cellular Metal Floor Raceways .7 7 Header Duct or Trench Header .9 8 Duct or Cell Fittings 10 9 Outlet Fittings
16、 .12 PERFORMANCE 10 Load Test 13 11 Tension/Shear Test 14 12 Peel Test .15 13 Grounding and Bonding Test .16 14 Protective Coating Test Zinc 16 15 Protective Coating Test Enamel .17 16 Rigidity of Cover Test 18 17 Flame Test .18 MARKINGS AND INSTRUCTIONS 18 Markings .21 19 Installation Accessories a
17、nd Instructions .22 EXAMINATION OF FINISHED PRODUCT BY MANUFACTURER 20 General 22 DECEMBER 20, 2011 CELLULAR METAL FLOOR RACEWAYS AND FITTINGS - UL 209 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requireme
18、nts cover cellular metal oor raceway systems intended to be installed as an integral part of the building structure and constructed for the installation of wires and cables in accordance with the National Electrical Code (NEC), NFPA 70. 1.2 These requirements do not cover rigid or exible conduit, su
19、rface metal raceways and ttings, underoor raceways and ttings, or other products of a similar nature. 1.3 These requirements do not cover the structural aspects or properties of cellular metal oor units their load-carrying and re-resistant capabilities or their physical dimensions with relation to m
20、echanical strength. 1.4 Cellular metal oor raceways consist of the hollow spaces in cellular metal oors and associated ttings that serve as enclosures for wires and cables. A duct or cell is a single enclosed tubular space in a cellular oor unit with a longitudinal axis parallel to the longitudinal
21、axis of the oor units. Header duct is an enclosed transverse wire raceway that, by providing access to predetermined cells of a cellular metal oor, facilitates the installation of wiring from a distribution center to the cells. Cellular metal oor raceway is always installed with concrete poured over
22、 the raceway and may be installed on top of a concrete slab. Trench header is a transverse wire raceway that provides access to all cells of the cellular oor units it crosses. Trench header allows lay-in wiring along its length by providing removable cover plates at its top surface. Trench header ma
23、y be the bottomless type allowing direct access for wiring into cells with factory punched holes or it may incorporate a bottom pan requiring eld cut entry holes into cells. 2 General 2.1 Undated references 2.1.1 Any undated reference to a code or standard appearing in the requirements of this stand
24、ard shall be interpreted as referring to the latest edition of that code or standard. 2.2 Units of measurement 2.2.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 2.2.2 Unless otherwise indicated, all voltage and current valu
25、es mentioned in this standard are root-mean-square (rms). DECEMBER 20, 2011 CELLULAR METAL FLOOR RACEWAYS AND FITTINGS - UL 209 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONSTRUCTION 3 General 3.1 A cellular metal oor raceway system s
26、hall include the: a) Cellular oor units with the closures necessary to keep foreign material out of the cells, b) Header ducts or trench headers and accessories, c) Conduit-to-cell ttings, pull boxes and ttings for the introduction of wires into the cells, and d) All outlet ttings and devices instal
27、led at the point of power delivery. The system shall afford a complete enclosure for the conductors, and there shall be provision for the complete mechanical and electrical separation of different wiring systems. Parts shall be constructed to achieve complete mechanical and electrical continuity of
28、the entire system. 3.2 To determine whether a cellular metal oor raceways system complies with the requirements in this standard, a comprehensive study is to be made of an actual installation of the system or of a completely representative sample installation. 3.3 The materials used in cellular meta
29、l oor raceways and ttings shall be compatible with all other materials in the raceways and ttings system. 3.4 A component of a cellular metal oor raceways system shall comply with the requirements for the construction, performance, and use of that component. 3.5 Cellular oor units shall be made of s
30、heet steel and shall have a uniform wall thickness at all points. Both inside and outside surfaces of each unit shall be cleaned of all scale and rust. The cleaning process shall leave the surface of the unit in a condition that results in the protective coating adhering rmly and having a smooth sur
31、face. 3.6 Ordinarily, scale is identied as a sharply dened edge or a rough surface extending for some distance along the unit or sheet, causing a slight but noticeable decrease in the internal dimensions. At the ends of the unit or any portion of the sheet, scale shall be identied by scraping the su
32、rface of the unit or sheet and thus removing the hard brittle lm of the scale. 3.7 All header duct, trench header, duct, or cell ttings, and outlet (service) ttings shall be for use with the oor units of cellular metal oor raceways so that the complete assembly complies with the requirement in 3.1.
33、3.8 Duct or cell ttings (accessories or duct- or cell-system components) are ttings used in the duct or cell systems between a lighting or power panel and the individual cells of the oor units. These ttings include hand-hole and tee boxes, wall or vertical elbows, duct or cell couplings, end closure
34、s, and cell-to-conduit elbows and connectors. DECEMBER 20, 2011 CELLULAR METAL FLOOR RACEWAYS AND FITTINGS - UL 209 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3.9 Outlet (service) ttings are ttings used above the outlet openings in the
35、 individual cells, in connection with either present or afterset inserts. These ttings include oor-outlet inserts, receptacle outlets, receptacle covers, bushed outlets, afterset inserts, insert extensions, anges, oor markers, insert caps, and insert-marker caps. 3.10 The construction of header duct
36、 or trench header, and all ttings shall exclude the entrance of concrete mix wherever joints are made in the actual installation (either between sections of duct or cell, between duct or cell and cellular oor units, or between duct or cell and boxes or other ttings). 3.11 All interior surfaces of he
37、ader duct or trench header and ttings shall be smooth and without any burrs, ns, or other projections that can damage wires. 4 Grounding and Bonding 4.1 A path for electric current shall be provided between all parts of a system of metallic duct, cell or raceway and ttings while installed in the int
38、ended manner. 4.2 The connection of a metallic duct, cell or raceway with a tting shall be tested in accordance with the Grounding and Bonding Test, Section 13. 4.3 A sheet metal screw shall not be used for the connection of an equipment grounding conductor. 5 Protective Coating 5.1 Both the interio
39、r and exterior surfaces of a cellular oor unit and all broad surfaces of the accessories mentioned in 6.7 shall be protected against corrosion by a coating of zinc and tested to the requirements in Protective Coating Zinc, Section 14. The lower element of a oor unit may be protected against corrosio
40、n on both the interior and exterior by an enamel coating complying with the requirements in 15.1 15.3 if it is: a) Integral with a structural member that protects it from below against physical damage during installation and b) Constructed of sheet steel not less than 0.067 inch (1.7 mm) thick. 5.2
41、Both the inside and outside surfaces of header duct or trench headers shall be protected against corrosion. If zinc is used, the coating shall comply with the requirements in Protective Coating Zinc, Section 14. If a metal other than zinc or if a nonmetallic material is used, the corrosion protectio
42、n afforded by the coating shall not be less than that of the specied zinc coating. If enamel is used, the coating, at any time up to one year from the time of manufacture, shall comply with the requirements in Protective Coating Enamel, Section 15. DECEMBER 20, 2011 CELLULAR METAL FLOOR RACEWAYS AND
43、 FITTINGS - UL 209 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 6 Cellular Metal Floor Raceways 6.1 A cellular oor unit shall be made of sheet steel. 6.2 No element shall be thinner than 0.034 inch (0.86 mm) when measured after fabricati
44、on but, if the upper element is thinner than 0.056 inch (1.42 mm), the following restrictions apply to the unit: a) If the upper element is thinner than 0.056 inch (1.42 mm), the installation instructions mentioned in 19.1 shall specify that the upper element is to be protected by at least 1 inch (2
45、5 mm) of concrete; b) If the upper element is thinner than 0.045 inch (1.14 mm), it shall be strengthened so that a representative sample of the complete unit complies with the Load Test, Section 10. The cell width and cross-sectional area need not be specied; c) If the upper element is thinner than
46、 0.045 inch (1.14 mm) and is not strengthened so that a representative sample of the complete unit complies with the Load Test, Section 10, no cell shall be wider than 4 inches (102 mm) or larger in cross-sectional area than 10 inches 2 (64.5 cm 2 ). 6.3 The thicknesses of 0.034 0.056 inch (0.86 1.4
47、2 mm) that are mentioned in 6.2 are the minimum values for cellular oor units as raceways for electrical wiring. Units employing heavier steel are needed and are regularly furnished where greater mechanical strength is essential for structural purposes. These units shall be subjected to the Load Tes
48、t, Section 10. 6.4 The upper and lower elements of the cellular oor units shall be fastened by spot welds or other fastenings of sufficient quantity to give the nished unit strength for the conditions of use. Spot welds shall comply with the Tension/Shear Test, Section 11 and Peel Test, Section 12.
49、6.5 The following shall be constructed of zinc-coated sheet steel of the same thickness as the upper element of the unit (see 6.2 and 6.3 for the specic thickness): a) A cover plate for an end joint between units where the upper element is intentionally set back from the lower element, b) An end closure for any type of unit, and c) Flashing for any type of unit. 6.6 A cover plate for an end joint between units where the upper element is intent
