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1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1242 Electrical Intermediate Metal Conduit Steel Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Re
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4、gsten Road Northbrook, IL 60062-2096 UL Standard for Safety for Electrical Intermediate Metal Conduit Steel, UL 1242 Fourth Edition, Dated February 16, 2006 Revisions: This Standard contains revisions through and including July 27, 2007. Summary of Topics A revision to the Conduit Identifi cation Ma
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27、ted after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. New product submittals made prior to a specifi ed future effective date will be judged under all of the requirements in this Standard including those requirements with a specifi ed future effective date, unless the applica
28、nt specifi cally requests that the product be judged under the current requirements. However, if JULY 27, 2007 UL 1242tr2 Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 08/07/2007 00:29:57 MDTNo repro
29、duction or networking permitted without license from IHS -,-,- UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL the applicant elects this option, it should be noted that compliance with all the requirements in this Standard will be required a
30、s a condition of continued Listing and Follow-Up Services after the effective date, and understanding of this should be signifi ed in writing. Copyright 2007 Underwriters Laboratories Inc. This Standard consists of pages dated as shown in the following checklist: PageDate 1. . . . . . . . . . . . .
31、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . July 27, 2007 2-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Feb
32、ruary 16, 2006 26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . June 2, 2006 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33、 . . . . . . . . . . . . . . . . . . . . . . . . July 27, 2007 28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . February 16, 2006 JULY 27, 2007 UL 1242tr3 Copyright Underwriters Laboratories Inc. Pr
34、ovided by IHS under license with ULLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 08/07/2007 00:29:57 MDTNo reproduction or networking permitted without license from IHS -,-,- UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FRO
35、M UL JULY 27, 2007 UL 1242tr4 No Text on This Page Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 08/07/2007 00:29:57 MDTNo reproduction or networking permitted without license from IHS -,-,- UL COPYR
36、IGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL FEBRUARY 16, 2006 (Title Page Reprinted: July 27, 2007) 1 UL 1242 Standard for Electrical Intermediate Metal Conduit Steel First Edition October, 1983 Second Edition July, 1996 Third Edition July, 2000
37、 Fourth Edition February 16, 2006 The most recent designation of ANSI/UL 1242 as an American National Standard (ANSI) occurred on July 20, 2007. This ANSI/UL Standard for Safety, which consists of the Fourth Edition, with revisions through July 27, 2007 is under continuous maintenance, whereby each
38、revision is ANSI approved upon publication. An effective date included as a note immediately following certain requirements is one established by Underwriters Laboratories Inc. and is not part of the ANSI standard. The Department of Defense (DoD) has adopted UL 1242 on May 21, 1984. The publication
39、of revised pages or a new edition of this Standard will not invalidate the DoD adoption. Revisions of this Standard will be made by issuing revised or additional pages bearing their date of issue. A UL Standard is current only if it incorporates the most recently adopted revisions, all of which are
40、itemized on the transmittal notice that accompanies the latest set of revised requirements. 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 Syst
41、em (CSDS) at http:/. COPYRIGHT 2006, 2007 UNDERWRITERS LABORATORIES INC. ANSI/UL 1242-2007 Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 08/07/2007 00:29:57 MDTNo reproduction or networking permitted
42、 without license from IHS -,-,- UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL FEBRUARY 16, 2006ELECTRICAL INTERMEDIATE METAL CONDUIT STEEL - UL 12422 No Text on This Page Copyright Underwriters Laboratories Inc. Provided by IHS under licen
43、se with ULLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 08/07/2007 00:29:57 MDTNo reproduction or networking permitted without license from IHS -,-,- UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTIO
44、N 1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 2 Units of Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
45、. . . . . . . . . . .5 3 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 4 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
46、. . . . . . . . . . . . . . . . . . . . . . . . . .5 CONSTRUCTION 5 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 6 Protective Coatings . . . . . . . . . . . . . . . . . . . . . . .
47、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 6.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 6.2 Surface treatments . . . . . . . . . . . . . . . .
48、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 6.3 Supplementary coatings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 6.4 Alternate corrosion-resistant coatings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 7 Threading and Chamfering . . . . . . . . . . . . . . . . . . .