ANSI C80.

6-2005

American National Standard

for Electrical Intermediate Metal

Conduit (EIMC)

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 ANSI C80.6-2005
Revision of
ANSI C80.6-1994

American National Standard

For Electrical Intermediate Metal Conduit (EIMC)

Secretariat:
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National Electrical Manufacturers Association

Approved September 16, 2005

American National Standards Institute, Inc.

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 ANSI C80.6-2005

NOTICE AND DISCLAIMER

The information in this publication was considered technically sound by the consensus of persons
engaged in the development and approval of the document at the time it was developed.
Consensus does not necessarily mean that there is unanimous agreement among every person
participating in the development of this document.

NEMA standards and guideline publications, of which the document contained herein is one, are
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Approval of an American National Standard requires verification by

AMERICAN ANSI that the requirements for due process, consensus, and other
NATIONAL criteria for approval have been met by the standards developer.

STANDARD Consensus is established when, in the judgment of the ANSI Board of

Standards Review, substantial agreement has been reached by directly
and materially affected interests. Substantial agreement means much
more than a simple majority, but not necessarily unanimity. Consensus
requires that all views and objections be considered, and that a
concerted effort be made toward their resolution.

The use of American National Standards is completely voluntary; their

existence does not in any respect preclude anyone, whether he has
approved the standards or not, from manufacturing, marketing,
purchasing, or using products, processes, or procedures not conforming
to the standards.

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The American National Standards Institute does not develop standards
and will in no circumstances give an interpretation of any American
National Standard. Moreover, no person shall have the right or
authority to issue an interpretation of an American National Standard in
the name of the American National Standards Institute. Requests for
interpretations should be addressed to the secretariat or sponsor whose
name appears on the title page of this standard.

Caution Notice: This American National Standard may be revised or

withdrawn at any time. The procedures of the American National
Standards Institute require that action be taken periodically to reaffirm,
revise, or withdraw this standard. Purchasers of American National
Standards may receive current information on all standards by calling or
writing the American National Standards Institute.

Published by

National Electrical Manufacturers Association

1300 North 17th Street, Rosslyn, VA 22209

 Copyright 2005 by National Electrical Manufacturers Association.

All rights reserved including translation into other languages, reserved under the Universal Copyright
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International and Pan American Copyright Conventions.

No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without
the prior written permission of the publisher.

Printed in the United States of America

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Contents
Page

Foreword ........................................................................................................................ v
1 Scope ..........................................................................................................................1
2 Normative References ...................................................................................................1
3 Definitions ......................................................................................................................2
4 Units of Measurements ..................................................................................................2
5 General Requirements ...................................................................................................2
5.1 Circular cross section........................................................................................2
5.2 Wall thickness ...................................................................................................2
5.3 Interior surface ..................................................................................................2
5.4 Welding .............................................................................................................2
5.5 Cleaning ............................................................................................................2
5.6 Protective coating for corrosion resistance.......................................................2
5.7 Surface treatment..............................................................................................2
6 Detailed Requirements...................................................................................................3
6.1 Exterior coating .................................................................................................3
6.1.1 Zinc coating..........................................................................................3
6.1.2 Alternative corrosion resistant coating (ACRC) ...................................3
6.2 Interior coating ..................................................................................................3
6.3 Threading and chamfering ................................................................................3
6.4 Identification ......................................................................................................3
6.5 Dimensions .......................................................................................................3
6.6 Threads .............................................................................................................3
6.7 Couplings ..........................................................................................................3
6.8 Elbows .............................................................................................................4
7 Test Procedures.............................................................................................................4
7.1 Bending properties ............................................................................................4
7.1.1 Ductility of steel ....................................................................................4
7.1.2 Ductility of coatings ..............................................................................5
7.2 Thickness of zinc coating..................................................................................5
7.3 Alternate corrosion resistant coatings (ACRC) .................................................5
7.4 Quality of organic coating for use on interior surface .......................................5
8 Examination of Product ..................................................................................................6
8.1 Place of inspection ............................................................................................6
8.2 Visual inspection of conduit ..............................................................................6

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8.3 Retests .............................................................................................................6

9 Markings .............................................................................................................6
9.1 General .............................................................................................................6
9.2 Alternate corrosion resistant coating marking...................................................6
9. 3 Supplementary coating marking .......................................................................7

Tables
1 Dimensions of threads for intermediate metal conduit...................................................7
2 Dimensions of intermediate metal conduit .....................................................................8
3 Dimensions of couplings ................................................................................................9
4 Minimum acceptable dimensions of elbows and other bends ....................................10

Figures
1 Test apparatus for bending conduit ...............................................................................5
2 Conduit bend................................................................................................................11
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 ANSI C80.6-2005

Foreword (This Foreword is not part of American National Standard C80.6-2005.)

This standard was developed by the Accredited Standards Committee on Raceways for Electrical Wiring
Systems, C80. The objective of the committee is to produce a comprehensive specification that would
establish uniform dimensions and standard construction requirements for Electrical Steel Metal Conduit,
Electrical Metallic Tubing, Electrical Intermediate Metal Conduit and Electrical Rigid Aluminum Conduit
raceway products and their associated components.

The standard was originally approved in 1986 and revised in 1994 and 2005.

Suggestions for improvement of this standard will be welcomed. They should be sent to:

National Electrical Manufacturers Association

1300 North 17th Street, Suite1847
Rosslyn, VA 22209.

This standard was processed and approved for submittal to ANSI by the Accredited Standards
Committee on Raceways for Electrical Wiring Systems, C80. Committee approval of the standard does
not necessarily imply that all committee members voted for its approval. At the time it approved this
standard, the C80 Committee had the following members:

J. A. Gruber, Chairman
J. P.Collins, Jr., Secretary

Organization Represented: Name of Representative:

Aluminum Association P. Pollak

American National Standards Institute H. Benko
American Iron and Steel Institute J. A. Gruber
American Iron and Steel Institute M. J. Brett, Jr.
American Iron and Steel Institute J. Robbins
American Pipe Fittings Association D. Thompson
International Association of Electrical Inspectors W. Lilly
International Brotherhood of Electrical Workers H. Hickman
National Electrical Contractors Association B. Stauffer
National Electrical Manufacturers Association A. W. Ballard
National Electrical Manufacturers Association S. Blais
National Electrical Manufacturers Association T. McNeive
National Electrical Manufacturers Association E. Thompson
National Electrical Manufacturers Association J. Dodds
Steel Tube Institute K. Carroll
Steel Tube Institute G. Scartozzi
Underwriters Laboratories, Inc G. Walbrecht
Unaffiliated D. Gearing
Unaffiliated R. Loyd
Unaffiliated H. E. Harper, Jr.

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AMERICAN NATIONAL STANDARD ANSI C80.6-2005

For Electrical Intermediate Metal Conduit (EIMC)—

1 Scope

This standard covers the requirements for steel electrical intermediate metal conduit for use as a raceway
for wires or cables of an electrical system. Finished conduit is produced in nominal 10 ft (3.05 m) lengths,
threaded on each end with one coupling attached. It is protected on the exterior surface with a metallic
zinc coating or an alternate corrosion protection coating (See UL 1242 Third edition Clauses 1.3, 1.4,
16.2, 17, 18, 19, 22.6 and 22.7) and on the interior surface with a zinc or organic coating.

This standard also covers conduit couplings, elbows, and conduit lengths other than 10 ft (3.05 m).

Properly assembled systems of conduit, couplings, elbows and nipples manufactured in accordance with
this standard, and other identified fittings, provide for the electrical continuity required of an equipment
grounding conductor.

2 Normative References
The following standards contain provisions which, through reference in this text, constitute requirements
of this American National Standard. At the time of this publication, the editions indicated were valid. All
standards are subject to revision, and parties to agreements based on this American National Standard
are encouraged to investigate the possibility of applying the most recent editions of the standards
indicated below unless otherwise specified.

ANSI/ASME B1.20.1, Pipe Threads, General Purpose (Inch)

ASTM A 239 – 95(1999), Standard Practice for Locating the thinnest Spot in a Zinc (Galvanized)
Coating on Iron or Steel Articles

ASTM B 499 – 96, Standard Test Method for Measurement of Coating Thicknesses by the Magnetic
Method: Nonmagnetic Coatings on Magnetic Basis Metals

UL 1242, Electrical Intermediate Metal Conduit – Steel

3 Definitions
3.1 electrical intermediate metal conduit (EIMC): A threadable steel raceway of circular cross-
section designed for the physical protection and routing of conductors and cables and for use as an
equipment grounding conductor.

3.2 threaded coupling: .An internally threaded steel cylinder for joining together the components of
an EIMC system.

3.3 elbow: A manufactured curved section of EIMC threaded on each end.

3.4 straight conduit: A straight length of EIMC without a coupling.

3.5 finished conduit: A straight length of EIMC with one coupling attached.

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3.6 alternate corrosion resistant coating (ACRC): A coating(s), other than one consisting solely of
zinc, which, upon evaluation, has demonstrated the ability to provide the level of corrosion resistance
required on the exterior of conduit. It is not prohibited that the coatings include zinc. (See UL 1242, third
edition, Clauses 1.3, 1.4, 16.2, 17, 18, 19, 22.6 and 22.7.)

4 Units of Measurements
The values stated in inch-pound units are to be regarded as the standard. The metric dimensions are
exact conversions for safety considerations.

5 General Requirements
5.1 Circular cross section

Electrical intermediate metal conduit shall have a circular cross section sufficiently accurate to permit the
cutting of threads in accordance with Table 1.

5.2 Wall thickness

The wall thickness shall be uniform throughout and in accordance with Table 2.

5.3 Interior surface

The interior surface shall be free from injurious defects.

5.4 Welding

The welding of all seams shall be continuous and done in a workmanlike manner.

5.5 Cleaning

The conduit shall be adequately cleaned before the application of the protective coating. The cleaning
process shall leave the exterior and interior surfaces of the conduit in such a condition that the protective
coating shall be smooth and adhere firmly.

5.6 Protective coating for corrosion resistance

5.6.1 The exterior surface shall be either thoroughly and evenly coated with metallic zinc or protected
with an alternate corrosion resistant coating (ACRC). (See UL 1242, third edition, Clauses 1.3, 1.4, 16.2,
17, 18, 19, 22.6 and 22.7).

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5.6.2 The interior surface shall be protected by a zinc or an organic coating. The interior coating shall
have a smooth continuous surface. An occasional variation due to uneven flow of coating shall be
acceptable.

5.7 Surface treatment

Any surface treatment not exceeding 0.00015 inch (0.038 mm) that is employed as a topcoat or
conversion coating is not required to meet the requirements for an ACRC or organic coating.

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6 Detailed Requirements
6.1 Exterior coating

6.1.1 Zinc coating

The zinc coating thickness on the outside surface shall be equivalent to a minimum thickness of 0.0008
inch (0.02 mm) as tested in accordance with 7.2.

6.1.2 Alternate corrosion resistant coating (ACRC)

(See UL 1242, third edition, Clauses 1.3, 1.4, 16.2, 17, 18, 19, 22.6 and 22.7.)

6.2 Interior coating

6.2.1 The zinc coating shall be tested in accordance with 7.1.2.

6.2.2 The organic coating shall not soften at a temperature of 120oF (49oC) and shall be sufficiently
elastic to meet the test described in 7.4.

6.3 Threading and chamfering

Each length of conduit and elbow shall be threaded on both ends, and each end shall be chamfered or
otherwise treated to remove burrs and sharp edges.

Threads shall comply with the requirements of 6.6. If threads are cut after the zinc coating has been
applied, the threads shall be treated with a protective coating to prevent corrosion before installation.
This treatment shall not impair electrical continuity through couplings or fittings after installation.

6.4 Identification

Each length of conduit and elbow shall be identified in accordance with 9.

6.5 Dimensions

The dimensions of EIMC shall be in accordance with Table 2.

6.6 Threads

The number of threads per inch (threads per 25.4 mm), and the length of the threaded portion at each
end of each length of conduit and elbow shall be as indicated in Table 1, and shall conform to American
National Standard for Pipe Threads, General Purpose (Inch) ANSI/ASME B1.20.1. The perfect thread
shall be tapered for its entire length, and the taper shall be 1 in 16.

6.7 Couplings

Couplings shall comply with the following requirements:

6.7.1 The exterior surface of couplings shall be protected against corrosion in the same manner as
required for conduit, and shall comply with the requirements of 6.1.1 and 6.1.2. The interior surface shall
be treated to inhibit corrosion from taking place prior to installation. This treatment shall not impair
electrical continuity between the couplings and conduit after installation.

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6.7.2 Couplings shall be so made that all threads on the conduit will be covered when the coupling is
made up “wrench tight” on conduit threads that met the requirements of 6.6.

6.7.3 Both ends of the coupling shall be chamfered to prevent damage to the starting thread.

6.7.4 The outside diameter, length, pitch diameter, and chamfer diameter of couplings shall be as
indicated in Table 3.

6.7.5 Couplings shall be straight tapped.

6.7.6 Couplings shall be identified as in 9.1.3.

6.8 Elbows

Conduit elbows shall be made of a similar grade of steel to that employed in straight lengths of EIMC, and
shall be treated, coated, threaded, and marked for identification according to the applicable requirements
for EIMC. The dimensions of 90 degree elbows shall be as indicated in Table 4.

7 Test Procedures
7.1 Bending properties

7.1.1 Ductility of steel

Conduit shall be capable of being bent, at ambient temperature, 90 degrees around a mandrel, the radius
of which is shown in Table 4, without developing cracks at any portion of the bend and without opening
the weld.
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7.1.2 Ductility of the coatings at ambient temperature

The protective coatings used on the exterior and interior surfaces of EIMC shall be sufficiently elastic to
prevent their cracking or flaking off when a finished sample of trade size 1/2 (16) or the smallest trade
size manufactured is tested at ambient temperature. The test shall be performed within 1 year after the
time of manufacture, by bending trade size 1/2 (16) 180 degrees around a mandrel, the radius of which is
shown in Table 4. Samples of other trade sizes shall be bent 90 degrees around a mandrel, the radius of
which is shown in Table 4.

Compliance of trade sizes 1/2 (16) and 3/4 (21) shall be determined by bending the conduit with a form as
shown in Figure 1. Compliance of trade sizes larger than 3/4 (21) shall be determined by bending the
conduit with any suitable bending equipment.

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Figure 1 – Test apparatus for bending conduit

7.2 Thickness of zinc coating

One of the following test methods shall be employed for measuring the thickness or extent of the external
zinc coating on conduit:
(1) Magnetic test in accordance with ASTM B 499.
(2) Copper sulfate test (Preece Test) in accordance with ASTM A 239. Material that will withstand four 1-
minute immersions shall be considered as meeting the requirements of 6.1.1.
(3) Copper sulfate test method for zinc coating in accordance with UL 1242, third edition, Section 16.1.

7.3 Alternate corrosion resistant coatings (ACRC)

(See UL 1242, third edition, Clauses 1.3, 1.4, 16.2, 17, 18, 19, 22.6 and 22.7.)

7.4 Quality of organic coating for use on interior surface

Two test pieces of uncoated sheet steel, 3 in. x 5 in. x 0.010 in. (76.2 mm x 127.0 mm x 0.25 mm)
shall be cleaned with a suitable solvent to remove all grease and foreign material. Each piece shall
be dipped into the material used for the inside coating of the conduit. The coated test pieces shall be
allowed to air-dry for 30 minutes before being placed in the baking oven. Each piece shall be
suspended by means of short wires in the baking oven and the samples shall be baked for a period of
5 hours at the normal baking temperature used in production. If the normal baking temperature is

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 ANSI C80.6-2005

less than 275oF (135oC) or if the coating is regularly air-dried, the oven temperature shall be
maintained at 275oF to 302oF (135oC to 150oC).

At the end of the 5-hour period, the test samples shall be removed from the oven and allowed to air-
cool to room temperature. Each test piece shall be gripped in a vise and then bent from the opposite
side back and forth five times through an angle of 180 degrees, the radius of the bend being 1/16 inch
(1.59 mm). When so tested, the coating on the sample shall not crack or flake.

8 Examination of Product

8.1 Place of inspection

All tests and inspections shall be made at the place of manufacture prior to shipment, unless otherwise
specified, and shall be so conducted as not to interfere with normal manufacturing processes.

8.2 Visual inspection of conduit

Each length of conduit shall be examined visually, both on the exterior and interior surfaces to determine
if the product is free from slivers, burrs, scale, or other similar injurious defects, and if coverage of the
coating is complete.

8.3 Retests

If any sample of EIMC tested as prescribed in this specification fails, two additional samples shall be
tested, both of which shall comply with the requirements of this specification.

9 Markings
9.1 General

9.1.1 Each length of conduit and elbow shall be marked “Intermediate Metal Conduit” or “IMC”, along
with the manufacturer’s name, trade name, or trademark or other descriptive marking by which the
organization responsible for the product can be identified. A traceable code can be used to identify the
manufacturer when a private labeler uses its own brand or trademark on the product. When a product is
produced in more than one factory, each length of conduit, elbow, and nipple shall bear a distinctive
marking by which it can be identified as the product of a particular factory. This marking may be in code.
Additionally, each piece shall be legibly and durably marked "Consult manufacturer for proper installation"
or equivalent wording.

9.1.2 Each length of conduit and elbow shall be marked "Intermediate Metal Conduit" or “IMC” at
maximum intervals of 5 feet (1.52 m), by a legible and durable means, such as by die stamping, ink
stamping with etching ink, or paint. This marking shall be in letters at least 1/8 inch (3 mm) high.

9.1.3 Each coupling shall be die-stamped “EC” (electrical coupling) in letters not less than 1/8 inch (3
mm) high.

9.1.4 Conduit marking shall be at a minimum of once every 10 feet (3.05 m) and no less than once
every piece.

9.2 Alternate corrosion resistant coating marking

(See UL 1242, third edition, Clauses 1.3, 1.4, 16.2, 17, 18, 19, 22.6 and 22.7.)

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9.3 Supplementary coating marking

Conduit and elbows provided with a supplementary coating, or coatings, that have not been evaluated for
providing corrosion resistance for the conduit shall be marked "Corrosion protection properties of the
[Insert type of supplementary coating applied] coating were not investigated” or equivalent wording.

Table 1 – Dimensions of threads for intermediate metal conduit

Inch-Pound Units Metric Units

Pitch diameter Length of Thread Pitch diameter Length of Thread
Threads at end of (in.) Threads at end of (mm)
Trade Metric
per thread Eo, per 25.4 thread Eo,
Size Designator
in. taper 3/4 in. Effective Overall mm taper 6.25 mm Effective Overall
per ft. L2 L4 per meter L2 L4
1/2 14 0.7584 0.53 0.78 16 14 19.3 13.46 19.81
3/4 14 0.9677 0.55 0.79 21 14 24.6 13.97 20.07
1 11-1/2 1.2136 0.68 0.98 27 11-1/2 30.8 17.27 24.89
1-1/4 11-1/2 1.5571 0.71 1.01 35 11-1/2 39.6 18.03 25.65
1-1/2 11-1/2 1.7961 0.72 1.03 41 11-1/2 45.6 18.29 26.16
2 11-1/2 2.2690 0.76 1.06 53 11-1/2 57.6 19.30 26.92
2-1/2 8 2.7195 1.14 1.57 63 8 69.1 28.96 39.88
3 8 3.3406 1.20 1.63 78 8 84.9 30.48 41.40
3-1/2 8 3.8375 1.25 1.68 91 8 97.5 31.75 42.67
4 8 4.3344 1.30 1.73 103 8 110.1 33.02 43.94

NOTE—Applicable tolerances:
Thread length (L4): ±1 thread, recommended practice +0, -1
Pitch diameter: +1 turn is the maximum variation permitted from the gauging face of the working thread gauges.

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Table 2 – Dimensions of intermediate metal conduit

Inch-Pound Units
Trade Reference Length
Size Outside Diameter (in.) Wall Thickness (in.) Nominal Without
Inside Coupling
Maximum Minimum Maximum Minimum Diameter (ft. and in.)
(in.)
1/2 0.820 0.810 0.085 0.070 0.659 9’11-1/4”
3/4 1.034 1.024 0.090 0.075 0.863 9’11-1/4”
1 1.295 1.285 0.100 0.085 1.104 9’11”
1-1/4 1.645 1.630 0.105 0.085 1.448 9’11”
1-1/2 1.890 1.875 0.110 0.090 1.683 9’11”
2 2.367 2.352 0.115 0.095 2.150 9’11”
2-1/2 2.867 2.847 0.160 0.140 2.575 9’10-1/2”
3 3.486 3.466 0.160 0.140 3.176 9’10-1/2”
3-1/2 3.981 3.961 0.160 0.140 3.671 9’10-1/4”
4 4.476 4.456 0.160 0.140 4.166 9’10-1/4”
Metric Units
Reference
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Length
Metric Outside Diameter (mm) Wall Thickness (mm) Nominal Without
Inside Coupling
Designator Maximum Minimum Maximum Minimum Diameter (mm)
(mm)
16 20.83 20.57 2.16 1.79 16.74 3030
21 26.26 26.01 2.29 1.90 21.94 3030
27 32.89 32.64 2.54 2.16 28.07 3025
35 41.78 41.40 2.67 2.16 36.75 3025
41 48.01 47.62 2.79 2.29 42.74 3025
53 60.12 59.74 2.92 2.41 54.59 3025
63 72.82 72.31 4.06 3.56 64.95 3010
78 88.54 88.04 4.06 3.56 80.67 3010
91 101.12 100.61 4.06 3.56 93.25 3005
103 113.69 113.18 4.06 3.56 105.82 3005

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Table 3 – Dimensions of couplings

Inch-Pound Units
Trade Outside Minimum Pitch Diameter (in.) Chamfer Diameter (in.)
Size Diameter Length
(in.)1 Minimum Maximum Minimum Maximum
1/2 1.010 1-5/8 0.801 0.814 0.798 0.838
3/4 1.250 1-41/64 1.011 1.024 1.008 1.048
1 1.525 1-31/32 1.267 1.283 1.260 1.300
1-1/4 1.869 2-1/32 1.612 1.628 1.605 1.645
1-1/2 2.155 2-1/16 1.852 1.868 1.845 1.885
2 2.650 2-1/8 2.327 2.343 2.320 2.360
2-1/2 3.250 3-3/16 2.806 2.828 2.800 2.860
3 3.870 3-5/16 3.431 3.453 3.425 3.485
3-1/2 4.500 3-13/32 3.391 3.953 3.925 3.985
4 4.875 3-33/64 4.431 4.453 4.425 4.485
Metric Units
Metric Outside Minimum Pitch Diameter (mm) Chamfer Diameter (mm)
Diameter Length
Designator (mm)1 Maximum Minimum Minimum Maximum
16 25.7 41.3 20.35 20.68 20.27 21.29
21 31.8 41.7 25.68 26.01 25.60 26.62
27 38.7 50.0 32.18 32.59 32.00 33.02
35 47.5 51.6 40.94 41.35 40.77 41.78
41 54.7 52.4 47.04 47.45 46.86 47.88
53 67.3 54.0 59.11 59.51 58.93 59.94
63 82.6 81.0 71.27 71.83 71.12 72.64
78 98.3 84.1 87.15 87.71 87.00 88.52
91 114.3 86.5 99.85 100.40 99.70 101.20
103 123.8 89.3 112.60 113.10 112.40 113.90

NOTES—
1. Outside diameter tolerances:
plus tolerances: no requirements
minus tolerances -
for trade sizes smaller than 1-1/4 (35): -1/64 in. (-0.40 mm)
for trade sizes 1-1/4 (35) and larger: -1%
2. Chamfer angle shall be between 11 and 15 degrees.
3. All couplings shall have straight-tapped threads.

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9
Copyright National Electrical Manufacturers Association
Provided by IHS under license with NEMA
No reproduction or networking permitted without license from IHS Not for Resale
 ANSI C80.6-2005

Table 4 – Minimum acceptable dimensions of elbows and other bends

Inch-Pound Units Metric Units

Minimum Minimum Minimum Minimum
Radius R to Straight Radius R to Straight
Trade Metric
Center of Length Ls Center of Length Ls
Size Designator
Conduit at Each Conduit at Each End
(In.) End (In.) (mm) (mm)
1/2 4 1-1/2 16 102 38.10
3/4 4-1/2 1-1/2 21 114 38.10
1 5-3/4 1-7/8 27 146 47.63
1-1/4 7-1/4 2 35 184 50.80
1-1/2 8-1/4 2 41 210 50.80
2 9-1/2 2 53 241 50.80
2-1/2 10-1/2 3 63 267 76.20
3 13 3-1/8 78 330 79.38
3-1/2 15 3-1/4 91 381 82.55
4 16 3-3/8 103 406 85.73

NOTE—See figure 5.

10 --`,,```,,,,````-`-`,,`,,`,`,,`---

Copyright National Electrical Manufacturers Association

Provided by IHS under license with NEMA
No reproduction or networking permitted without license from IHS Not for Resale
 ANSI C80.6-2005

Figure 2 – Conduit bend

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11
Copyright National Electrical Manufacturers Association
Provided by IHS under license with NEMA
No reproduction or networking permitted without license from IHS Not for Resale