UL Standard

Standard for Electrical Rigid Metal Conduit - Steel

UL Standard

Scope

ulharm-6.14

Electrical Rigid Metal Conduit - Steel

UL 6

1 Scope

1.1 These requirements cover electrical rigid metal conduit - steel (ERMC-S), elbows, couplings, and nipples for use as a metal raceway for installation of wires and cables in accordance with CSA C22.1, Canadian Electrical Code, Part 1, NOM-001-SEDE, Standard for Electrical Installations, and NFPA 70, National Electrical Code (see Reference Item No. 1, Annex a). ERMC-S is provided with a zinc, zinc-based, nonmetallic, or other alternate corrosion-resistant exterior coating and an organic or zinc interior coating. It is the user's responsibility to determine the appropriate product for their application.

1.2 Non-ferrous and stainless steel conduit are covered by the standards listed in Reference Item No. 2, Annex a.

Summary of Topics

Summary of Topics s0006_14_sum.html

Summary of Topics

This revision of ANSI/UL 6 dated September 27, 2019 includes the following :

Annex A Normative References Update

Interpretation of Flammability Test Result for a Thin Nonmetallic Topcoat (Outermost Layer) of an Alternate Corrosion Protection System

Removal of Chamfer Angle Requirement for Couplings

Clarification to Elbow Requirements, Test Bend Radius, and Editorial Changes

Standard 6, Edition 14

Edition Date: November 30, 2007

DOD Approved: May 10, 1982

ANSI Approved: November 14, 2014

$798.00-$1,990.00

Date
September 27, 2019	Redline	Revision
November 14, 2014		Revision
November 30, 2010		Revision

Date

September 27, 2019

Redline

Revision

November 14, 2014

Revision

November 30, 2010

Revision

CSDS Proposal CSDS Proposals An electronic document associated with a UL Standard for Safety or Outline of Investigation, and issued by UL to propose: A revision of a single or multiple requirement(s). A complete new edition of an existing Standard or Outline. A new Standard or Outline that has not previously been published. CSDS Proposals provide access to view the proposal and submit comments within UL's Collaborative Standards Development System (CSDS) appropriately. ×	Summary of Topics (SOT)
January 18, 2019	View Summary of Topics b0006_14_20190118_sum.html Subject 6 Bulletin Dated: January 18, 2019 SUMMARY OF TOPICS The following changes in requirements to the Standard for Electrical Rigid Metal Conduit - Steel, UL 6, are being proposed: 1. Annex A Normative References Update 2. Interpretation of Flammability Test Result for a Thin Nonmetallic Topcoat (Outermost Layer) of an Alternate Corrosion Protection System 3. Removal of Chamfer Angle Requirement for Couplings 4. Clarification to Elbow Requirements, Test Bend Radius, and Editorial Changes
May 18, 2018	View Summary of Topics b0006_14_20180518_sum.html Subject 6 Bulletin Dated: May 18, 2018 SUMMARY OF TOPICS The following changes in requirements to the Standard for Electrical Rigid Metal Conduit - Steel, UL 6, are being proposed for preliminary review and comment only: 1. For Preliminary Review Only: Annex A Normative References Update 2. For Preliminary Review Only: Interpretation of Flammability Test Result for a Thin Nonmetallic Topcoat (Outermost Layer) of an Alternate Corrosion Protection System 3. For Preliminary Review Only: Removal of Chamfer Angle Requirement for Couplings 4. For Preliminary Review Only: Clarification to Elbow Requirements, Test Bend Radius, and Editorial Changes
March 28, 2014	View Summary of Topics b0006_14_20140328_sum.html Subject 6 Bulletin Dated: March 28, 2014 SUMMARY OF TOPICS The following changes in requirements to the Standard for Electrical Rigid Metal Conduit - Steel, UL 6, are being proposed: 1. Marking Limitation on Small Trade Size Elbows and Nipples
November 20, 2013	View Summary of Topics b0006_14_20131120_sum.html Subject 6 Bulletin Dated: November 20, 2013 SUMMARY OF TOPICS The following changes in requirements to the Standard for Electrical Rigid Metal Conduit - Steel, UL 6, are being proposed for preliminary review and comment only: 1. For Preliminary Review Only: Marking Limitation on Small Trade Size Elbows and Nipples
September 03, 2010	View Summary of Topics b0006_14_20100903_sum.html Subject 6 Bulletin Dated: September 3, 2010 SUMMARY OF TOPICS The following changes in requirements to the Standard for Electrical Rigid Metal Conduit - Steel, UL 6, are being proposed: 1. Use of Two or More Primary Corrosion Protection Systems
July 08, 2010	View Summary of Topics b0006_14_20100708_sum.html Subject 6 Bulletin Dated: July 8, 2010 SUMMARY OF TOPICS The following changes in requirements to the Standard for Electrical Rigid Metal Conduit - Steel, UL 6, are being proposed for preliminary review and comment only: 1. For Preliminary Review Only: Use of Two or More Primary Corrosion Protection Systems
July 13, 2007	View Summary of Topics b0006_14_20070713_sum.html Subject 6 Bulletin Dated: July 13, 2007 SUMMARY OF TOPICS The following changes in requirements are being proposed: 1. Proposed Trinational Standard for Electrical Rigid Metal Conduit - Steel, UL 6, 14th Edition, which includes: (a) The addition of Mexican requirements, (b) The updating of outside references in Annex A, (c) The correction of Figure 2 to match the tolerances noted in clause 5.6.3, (d) Clarification of manufacturer's identification marking in clause 7.1, and (e) New Annex E for alternative national markings.

CSDS Proposal

CSDS Proposals

An electronic document associated with a UL Standard for Safety or Outline of Investigation, and issued by UL to propose:

A revision of a single or multiple requirement(s).
A complete new edition of an existing Standard or Outline.
A new Standard or Outline that has not previously been published.

CSDS Proposals provide access to view the proposal and submit comments within UL's Collaborative Standards Development System (CSDS) appropriately.

Summary of Topics (SOT)

January 18, 2019

View

Summary of Topics b0006_14_20190118_sum.html

Subject 6

Bulletin Dated: January 18, 2019

SUMMARY OF TOPICS

The following changes in requirements to the Standard for Electrical Rigid Metal Conduit - Steel, UL 6, are being proposed:

1. Annex A Normative References Update

2. Interpretation of Flammability Test Result for a Thin Nonmetallic Topcoat (Outermost Layer) of an Alternate Corrosion Protection System

3. Removal of Chamfer Angle Requirement for Couplings

4. Clarification to Elbow Requirements, Test Bend Radius, and Editorial Changes

May 18, 2018

View

Summary of Topics b0006_14_20180518_sum.html

Subject 6

Bulletin Dated: May 18, 2018

SUMMARY OF TOPICS

The following changes in requirements to the Standard for Electrical Rigid Metal Conduit - Steel, UL 6, are being proposed for preliminary review and comment only:

1. For Preliminary Review Only: Annex A Normative References Update

SUMMARY OF TOPICS

The following changes in requirements are being proposed:

1. Proposed Trinational Standard for Electrical Rigid Metal Conduit - Steel, UL 6, 14th Edition, which includes: (a) The addition of Mexican requirements, (b) The updating of outside references in Annex A, (c) The correction of Figure 2 to match the tolerances noted in clause 5.6.3, (d) Clarification of manufacturer's identification marking in clause 7.1, and (e) New Annex E for alternative national markings.

Showing 10 of XX

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Standard	Edition	Title
6A	2	Standard for Electrical Rigid Metal Conduit - Aluminum, Red Brass, and Stainless Steel
514B	6	Standard for Conduit, Tubing, and Cable Fittings
746A	6	Standard for Polymeric Materials - Short Term Property Evaluations

Standard

Edition

Title

Standard for Electrical Rigid Metal Conduit - Aluminum, Red Brass, and Stainless Steel

514B

Standard for Conduit, Tubing, and Cable Fittings

746A

Standard for Polymeric Materials - Short Term Property Evaluations

UL Standards Sales Site

Standard for Electrical Rigid Metal Conduit - Steel

Revisions and Related Documents

Standard for Electrical Rigid Metal Conduit - Steel

Electrical Rigid Metal Conduit - Steel

UL 6

1 Scope

Summary of Topics

Revisions and Related Documents

Subject 6

Bulletin Dated: January 18, 2019

SUMMARY OF TOPICS

Subject 6

Bulletin Dated: May 18, 2018

SUMMARY OF TOPICS

Subject 6

Bulletin Dated: March 28, 2014

SUMMARY OF TOPICS

Subject 6

Bulletin Dated: November 20, 2013

SUMMARY OF TOPICS

Subject 6

Bulletin Dated: September 3, 2010

SUMMARY OF TOPICS

Subject 6

Bulletin Dated: July 8, 2010

SUMMARY OF TOPICS

Subject 6

Bulletin Dated: July 13, 2007

SUMMARY OF TOPICS

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