UL Standard | UL 651

Standard for Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings

UL Standard

Scope

006510-000000-000000

1 Scope

1 General

1 1.1 These requirements cover Schedule 40, Schedule 80, Type EB and Type A extruded rigid PVC (polyvinyl chloride) electrical conduit and fittings. These requirements also cover elbows, couplings, adapters, expansion, expansion-deflection, or deflection joints, and similar fittings that are constructed at least in part of rigid PVC. The designations "Schedule 40", "Schedule 80", "Type EB", "Type A" refer to USA trade sizes of conduit having iron pipe-size outside diameters and specific wall thicknesses. Couplings, adapters, expansion, expansion-deflection, or deflection joints, and similar fittings are intended to be used with Schedule 40, Schedule 80, Type EB and Type A rigid PVC conduit, and elbows in accordance with the National Electrical Code (NEC), NFPA 70.

1 1.2 Rigid PVC conduit and fittings covered in these requirements are intended for use as rigid nonmetallic raceway for wires and cables in accordance with the National Electrical Code (NEC), NFPA 70.

1 1.3 Conduit bodies (pull boxes) and covers, flush-device boxes and covers, and outlet boxes and covers that are constructed of rigid PVC or another nonmetallic material and are for use with the rigid PVC conduit and fittings covered in these requirements are covered separately in the Standard for Nonmetallic Outlet Boxes, Flush-Device Boxes, and Covers, UL 514C.

1 1.4 Rigid PVC conduit and fittings covered in these requirements are intended to be joined to each other and to rigid PVC boxes, conduit bodies, and fittings in the field by such means as a push-fit or a cement that is or contains a solvent for polyvinyl chloride.

1 1.5 Unless the wording of a requirement that applies to rigid PVC conduit and fittings specifically limits the requirement to Schedule 40, Schedule 80, Type EB or to Type A, each such requirement in this standard applies to all types.

1 1.6 Reinforced thermosetting resin conduit and associated fittings are covered separately in the Standard for Aboveground Reinforced Thermosetting Resin Conduit (RTRC) and Fittings, UL 2515 and the Standard for Belowground Reinforced Thermosetting Resin Conduit (RTRC) and Fittings, UL 2420.

Summary of Topics

Summary of Topics s0651_8_sum.html

Summary of Topics

This revision for ANSI/UL 651 dated March 24, 2020 includes editorial corrections for Section 6.4.

Standard 651, Edition 8

Edition Date: October 25, 2011

DOD Approved: August 05, 1983

ANSI Approved: March 24, 2020

$505.00-$1,258.00

Date
March 24, 2020	Redline	Revision
March 09, 2020	Redline	Revision
November 30, 2018	Redline	Revision
June 15, 2016	Redline	Revision
May 02, 2014	Redline	Revision
March 30, 2012		Revision

Date

March 24, 2020

Redline

Revision

March 09, 2020

Redline

Revision

November 30, 2018

Redline

Revision

June 15, 2016

Redline

Revision

May 02, 2014

Redline

Revision

March 30, 2012

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)
August 23, 2019	View Summary of Topics b0651_8_20190823_sum.html Subject 651 Bulletin Dated: August 23, 2019 SUMMARY OF TOPICS The following changes in requirements to the Standard for Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings, UL 651, are being proposed: 1. Removal of Low-Temperature Handling Test from Standard 2. Clarification of Socket Depth Construction and Testing Requirements
July 26, 2019	View Summary of Topics b0651_8_20190726_sum.html Subject 651 Bulletin Dated: July 26, 2019 SUMMARY OF TOPICS The following changes in requirements to the Standard for Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings, UL 651, are being proposed: 1. Clarifications to Schedule 40 and 80 for use with 90° Wire Performance Testing 2. Correct to Figure 6.9 3. Clarification of Impact Test after Cold Conditioning, 7.3.6A is for Service Entrance Head Style Only Push-Fit Fittings
July 12, 2019	View Summary of Topics b0651_8_20190712_sum.html Subject 651 Bulletin Dated: July 12, 2019 SUMMARY OF TOPICS The following changes in requirements to the Standard for Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings, UL 651, are being proposed for preliminary review and comment only: 1. For Preliminary Review Only: Removal of Low-Temperature Handling Test from Standard 2. For Preliminary Review Only: Clarification of Socket Depth Construction and Testing Requirements
July 06, 2018	View Summary of Topics b0651_8_20180706_sum.html Subject 651 Bulletin Dated: July 6, 2018 SUMMARY OF TOPICS The following changes in requirements to the Standard for Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings, UL 651, are being proposed: 1. Non-solvent type PVC Fittings (Push-Fit ) for use with PVC conduit 2. UL 651 Recycled Material Clause 4.1.3 Removal of Reference to Withdrawn Standard ASTM D5033
March 30, 2018	View Summary of Topics b0651_8_20180330_sum.html Subject 651 Bulletin Dated: March 30, 2018 SUMMARY OF TOPICS The following changes in requirements to the Standard for Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings, UL 651, are being proposed for preliminary review and comment only: 1. For Preliminary Review Only: Non-solvent type PVC Fittings (Push-Fit ) for use with PVC conduit
April 01, 2016	View Summary of Topics b0651_8_20160401_sum.html Subject 651 Bulletin Dated: April 1, 2016 SUMMARY OF TOPICS The following changes in requirements to the Standard for Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings, UL 651, are being proposed: 1. Exemption of Permanency of Printing Requirements for Schedule 40 and 80 Conduit when Laser Printed 2. Editorial Clarification for Paragraph 7.5.3.1 and Removal of Reference to Withdrawn ASTM D648
March 04, 2016	View Summary of Topics b0651_8_20160304_sum.html Subject 651 Bulletin Dated: March 4, 2016 SUMMARY OF TOPICS The following changes in requirements to the Standard for Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings, UL 651, are being proposed for preliminary review and comment only: 1. For Preliminary Review Only: Exemption of Permanency of Printing Requirements for Schedule 40 and 80 Conduit when Laser Printed 2. For Preliminary Review Only: Editorial Clarification for Paragraph 7.5.3.1 and Removal of Reference to Withdrawn ASTM D648
February 14, 2014	View Summary of Topics b0651_8_20140214_sum.html Subject 651 Bulletin Dated: February 14, 2014 SUMMARY OF TOPICS The following changes in requirements to the Standard for Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings, UL 651, are being proposed: 1. Nonmetallic Expansion-Deflection Fittings
January 10, 2014	View Summary of Topics b0651_8_20140110_sum.html Subject 651 Bulletin Dated: January 10, 2014 SUMMARY OF TOPICS The following changes in requirements to the Standard for Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings, UL 651, are being proposed for preliminary review and comment only: 1. For Preliminary Review Only: Nonmetallic Expansion-Deflection Fittings
January 20, 2012	View Summary of Topics b0651_8_20120120_sum.html Subject 651 Bulletin Dated: January 20, 2012 SUMMARY OF TOPICS The following changes in requirements to the Standard for Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings, UL 651, are being proposed: 1. Clarification of "End Bells" in UL 651
May 27, 2011	View Summary of Topics m0651_8_20110527_sum.html Subject 651 (651A) Bulletin Dated: May 27, 2011 SUMMARY OF TOPICS The following changes in requirements to the Standard for Schedule 40 and 80 Rigid PVC Conduit and Fittings, UL 651, are being proposed: 1. Proposed Eighth Edition of UL 651, Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings, which includes new requirements for underground PVC conduit

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)

August 23, 2019

View

Summary of Topics b0651_8_20190823_sum.html

Subject 651

Bulletin Dated: August 23, 2019

SUMMARY OF TOPICS

The following changes in requirements to the Standard for Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings, UL 651, are being proposed:

1. Removal of Low-Temperature Handling Test from Standard

2. Clarification of Socket Depth Construction and Testing Requirements

July 26, 2019

View

Summary of Topics b0651_8_20190726_sum.html

Subject 651

Bulletin Dated: July 26, 2019

SUMMARY OF TOPICS

The following changes in requirements to the Standard for Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings, UL 651, are being proposed:

1. Clarifications to Schedule 40 and 80 for use with 90° Wire Performance Testing

2. Correct to Figure 6.9

3. Clarification of Impact Test after Cold Conditioning, 7.3.6A is for Service Entrance Head Style Only Push-Fit Fittings

July 12, 2019

View

Summary of Topics b0651_8_20190712_sum.html

Subject 651

Bulletin Dated: July 12, 2019

SUMMARY OF TOPICS

The following changes in requirements to the Standard for Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings, UL 651, are being proposed for preliminary review and comment only:

1. For Preliminary Review Only: Removal of Low-Temperature Handling Test from Standard

2. For Preliminary Review Only: Clarification of Socket Depth Construction and Testing Requirements

July 06, 2018

View

Summary of Topics b0651_8_20180706_sum.html

Subject 651

Bulletin Dated: July 6, 2018

SUMMARY OF TOPICS

The following changes in requirements to the Standard for Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings, UL 651, are being proposed:

1. Non-solvent type PVC Fittings (Push-Fit ) for use with PVC conduit

2. UL 651 Recycled Material Clause 4.1.3 Removal of Reference to Withdrawn Standard ASTM D5033

March 30, 2018

View

Summary of Topics b0651_8_20180330_sum.html

Subject 651

Bulletin Dated: March 30, 2018

SUMMARY OF TOPICS

The following changes in requirements to the Standard for Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings, UL 651, are being proposed for preliminary review and comment only:

1. For Preliminary Review Only: Non-solvent type PVC Fittings (Push-Fit ) for use with PVC conduit

April 01, 2016

View

Summary of Topics b0651_8_20160401_sum.html

Subject 651

Bulletin Dated: April 1, 2016

SUMMARY OF TOPICS

The following changes in requirements to the Standard for Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings, UL 651, are being proposed:

1. Exemption of Permanency of Printing Requirements for Schedule 40 and 80 Conduit when Laser Printed

2. Editorial Clarification for Paragraph 7.5.3.1 and Removal of Reference to Withdrawn ASTM D648

March 04, 2016

View

Summary of Topics b0651_8_20160304_sum.html

Subject 651

Bulletin Dated: March 4, 2016

SUMMARY OF TOPICS

The following changes in requirements to the Standard for Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings, UL 651, are being proposed for preliminary review and comment only:

1. For Preliminary Review Only: Exemption of Permanency of Printing Requirements for Schedule 40 and 80 Conduit when Laser Printed

2. For Preliminary Review Only: Editorial Clarification for Paragraph 7.5.3.1 and Removal of Reference to Withdrawn ASTM D648

February 14, 2014

View

Summary of Topics b0651_8_20140214_sum.html

Subject 651

Bulletin Dated: February 14, 2014

SUMMARY OF TOPICS

The following changes in requirements to the Standard for Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings, UL 651, are being proposed:

1. Nonmetallic Expansion-Deflection Fittings

January 10, 2014

View

Summary of Topics b0651_8_20140110_sum.html

Subject 651

Bulletin Dated: January 10, 2014

SUMMARY OF TOPICS

The following changes in requirements to the Standard for Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings, UL 651, are being proposed for preliminary review and comment only:

1. For Preliminary Review Only: Nonmetallic Expansion-Deflection Fittings

January 20, 2012

View

Summary of Topics b0651_8_20120120_sum.html

Subject 651

Bulletin Dated: January 20, 2012

SUMMARY OF TOPICS

The following changes in requirements to the Standard for Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings, UL 651, are being proposed:

1. Clarification of "End Bells" in UL 651

May 27, 2011

View

Summary of Topics m0651_8_20110527_sum.html

Subject 651 (651A)

Bulletin Dated: May 27, 2011

SUMMARY OF TOPICS

The following changes in requirements to the Standard for Schedule 40 and 80 Rigid PVC Conduit and Fittings, UL 651, are being proposed:

1. Proposed Eighth Edition of UL 651, Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings, which includes new requirements for underground PVC conduit

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Certification Requirement Decision
January 31, 2014

Certification Requirement Decision

January 31, 2014

Standard	Edition	Title
514C	4	Standard for Nonmetallic Outlet Boxes, Flush-Device Boxes, and Covers
651A	5	Schedule 40 and 80 High Density Polyethylene (HDPE) Conduit
746D	8	Standard for Polymeric Materials - Fabricated Parts
969	5	Standard for Marking and Labeling Systems

Standard

Edition

Title

514C

Standard for Nonmetallic Outlet Boxes, Flush-Device Boxes, and Covers

651A

Schedule 40 and 80 High Density Polyethylene (HDPE) Conduit

746D

Standard for Polymeric Materials - Fabricated Parts

969

Standard for Marking and Labeling Systems

UL Standards Sales Site

Standard for Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings

Revisions and Related Documents

Standard for Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings

1 Scope

Summary of Topics

Revisions and Related Documents

Subject 651

Bulletin Dated: August 23, 2019

SUMMARY OF TOPICS

Subject 651

Bulletin Dated: July 26, 2019

SUMMARY OF TOPICS

Subject 651

Bulletin Dated: July 12, 2019

SUMMARY OF TOPICS

Subject 651

Bulletin Dated: July 6, 2018

SUMMARY OF TOPICS

Subject 651

Bulletin Dated: March 30, 2018

SUMMARY OF TOPICS

Subject 651

Bulletin Dated: April 1, 2016

SUMMARY OF TOPICS

Subject 651

Bulletin Dated: March 4, 2016

SUMMARY OF TOPICS

Subject 651

Bulletin Dated: February 14, 2014

SUMMARY OF TOPICS

Subject 651

Bulletin Dated: January 10, 2014

SUMMARY OF TOPICS

Subject 651

Bulletin Dated: January 20, 2012

SUMMARY OF TOPICS

Subject 651 (651A)

Bulletin Dated: May 27, 2011

SUMMARY OF TOPICS

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