1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 209 Cellular Metal Floor Raceways and FittingsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED
2、 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 issued as part of the Tenth Edition of UL 209: 1. Addition of the te
3、rms cell and trench header 2. Cellular oor units constructed with internal partitions The revised requirements are substantially in accordance with Proposal(s) on this subject dated October 14, 2011. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or
4、 transmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. UL provides this Standard as is without warranty of any kind, either expressed or implied, including but not limited to, the implied warranties of merchantability or tn
5、ess for any purpose. In no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss of prots, lost savings, loss of data, or any other damages arising out of the use of or the inability to use this Standard, even if UL or an authorized UL repres
6、entative 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 electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless
7、 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 Standard on the purchasers computer system. The requirements in this Standard are now in effect,
8、except for those paragraphs, sections, tables, gures, and/or other elements of the Standard having future effective dates as indicated in the note following the affected item. The prior text for requirements that have been revised and that have a future effective date are located after the Standard,
9、 and are preceded by a SUPERSEDED REQUIREMENTS notice. DECEMBER 20, 2011 UL 209 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL DECEMBER 20, 2011 UL 209 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTI
10、ON OR DISTRIBUTION WITHOUT PERMISSION FROM UL DECEMBER 20, 2011 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 February, 1987 Sev
11、enth 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. The most recent designation of ANSI/UL 209 as an American National Standard (ANSI) occ
12、urred on December 20, 2011. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, or effective date information. The Department of Defense (DoD) has adopted UL 209 on May 18, 1987. The publication of revised pages or a new edition of this Standard will not inva
13、lidate 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 are copyrighted by UL
14、. 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 2011 UNDERWRITERS LABORATORIES INC. ANSI/UL 209-2011UL COPYRIGHT
15、ED 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 PERMISSION FROM UL CONTEN
16、TS 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 .12 PERFORMANCE 10
17、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 and Instructions .22
18、 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 requirements cover cellular
19、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, surface metal raceway
20、s 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 mechanical strength.
21、 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 axis of the oor uni
22、ts. 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 the raceway and ma
23、y 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 may be the bottomless
24、 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 standard shall be interp
25、reted 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 values mentioned in thi
26、s 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 shall include the: a
27、) 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 installed at the point of
28、 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 the entire system.
29、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 metal oor raceways and
30、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 sheet steel and shal
31、l 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 surface. 3.6 Ordinaril
32、y, 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 surface of the unit o
33、r 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. 3.8 Duct or cell tt
34、ings (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 closures, and cell-to-cond
35、uit 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 individual cells,
36、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 or trench header,
37、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 header duct or trench
38、 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 intended manner. 4.2 T
39、he 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 interior and exterior surf
40、aces 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 corrosion on both the inter
41、ior 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 Both the inside and
42、 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 protection afforded by the c
43、oating 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 FITTINGS - UL 209
44、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 fabrication but, if the uppe
45、r 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 (25 mm) of concrete;
46、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 0.045 inch (1.14 m
47、m) 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 1.42 mm) that are ment
48、ioned 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 Test, Section 10. 6.4
49、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. 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
