AMERICAN
NATIONAL STANDARD
PRACTICES
DRAFTING
INTERCONNECTION
DIAGRAMS
ANSI Y14.15.a - 1971
SECTION 15 - 11
SECRETARIAT
American Society for Engineering Education
The American Society of Mechanical Engineers
PUBLISHED BY
THE
AMERICAN
SOCIETY
United Engineering Center
OF
MECHANICAL
345 East 47th Street
ENGINEERS
New York, N. Y. 10017
ACCEP TANCE NOTICE
The following Industry Standardization Documents were adopted on 15 May 1967 and 15 March 1971,
respectively, for mandatory use by the Department of Defense. The indicated industry group has
furnished the clearances required by existing regulations. Copies of the documents are stocked by
DoD Single Stock Point, U.S. Naval Publications and Forms Center, Philadelphia, Pa. 19120, for
issue to Mi litary Activities only.
Title of Documents: (a) Electrical and Electronics Diagrams*
(b) Interconnection Diagrams
Document No: (a) ANSI Y 14.15-1966
(b) ANSI Y14.15a-1970
Date of Specific Issue Adopted: (a) 2 December 1966
(b) 4 November 1970
Releasing Industry Group: American National, Standards Institute, Inc.
Custod ians:
Army-EL
Navy-SH
Air Force-26
Mi litary Coordinating Activity:
Army-EL
(a) Project DRPR-0123
(b) Project DRPR-0154
Review Activities:
Army-AV, MI, AT, MU, WC
Navy-AS, EC,
YD
Air Force-ll, 17, 71
as,
User Activities:
Army-CE, ME
Navy-MC
*Sections 10 and 12 of the basic standard ANSI Y14.15·1966 were adopted on 15 May 1967 for mandatory use by the Department of Defense, but were not so identified by the acceptance notice.
I,
Certain Provisions of this standard are the subject of international standardization agreement, ABC
NAVY STD 28A - Symbols and abbreviations for Electrical and Electronic Drawings, to which the
US Army also subscribes. When amendment, revision, or cancellation of this standard is proposed
which wi II effect or violate the international agreement concerned, the preparing activity wi II take
appropriate reconciliation action through military international standardization channels including
departmental standardization offices, if required.
Copyright, @) 1971 by
THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS
Printed in U.S.A.
Foreword
Subcommittee 15 - Electrical and Electronic Diagrams - was formed on April
26, 1954, as a subcommittee of Standards Committee Yl4-Standards for Drawings
and Drafting. When formed, this subcommittee was charged with the responsibility
of preparing a drafting standard covering "electrical schematic, wiring and block
diagrams for use in the communications, electronic, electric power, industrial
control, telephone, telegraph and allied industries!' A natural addition to this
scope was the inclusion of military considerations through participation by representatives of the Department of Defense.
The creation of such a standard, acceptable to the manufacture of electrical
equipment and to industrial, military and utility users, often in areas which were
themselves undergoing development, has been an exercise in cooperation and
compromise. The overriding purpose of all of the participants has been to issue
a single American staridard which could be used as a reference in purchasing
equipment, cited as authority in contract and military specifications and applicable as a guide for drafting and design personnel responsible for drawings for
production or for use wholly within a plant or company.
F or this standard to be so widely applicable it had to be made broad and
permissive; therefore compromise was essential, particularly in terminology,
but such compromise had the beneficial effect of expediting its issue and of
making it generally available. The preparing committee hopes its effect is to unify
drafting practices and that future revisions will reflect this uniformity by eliminating material and establishing preferred methods and nomenclature.
Section 15-11 wa s approved on Apri I 22, 19t58 by the Standards Committee. It
was later approved by the Secretariat and the American National Standards. Institute, and was designated an American National. Standard on November 4, 1970 to
supplement the previously issued ANSI YI4.15-1966.
No part of this document may be reproduced in any form. in an
electronic retrieval system or otherwise. without the prior
written permission of the publisher.
iii
AMERICAN NATIONAL STANDARDS COMMITTEE Y14
STANDARDS FOR DRAWING AND DRAFTING PRACTICE
OFFICERS
F. L. Spalding, Chairman
R. F. Francioso, Vice Chairman
C. H. Koarns, Secretary
STANDARDS COMMITTEE
ALUMINUM ASSOCIATION, THE
W. G. Snyder, Reynolds Metals Company, Richmond, Virginia
F. A. Lewis, Alternate, The Aluminum Association, New York, N.Y.
AMERICAN INSTITUTE FOR DESIGN AND DRAFTING
F. E. Golightly, Westinghouse Electric Corporation, Youngwood, Pennsylvania
AMERICAN SOCIETY FOR ENGINEERING EDUCATION, THE
R. W. Bokenkamp, University of Illinois, Urbana, Illinois
K. E. Botkin, Purdue University, West Lafayette, Indiana
C. H. Kearns, Ohio State University, Columbus, Ohio
W. J. Luzadder, Purdue University, West Lafayette, Indiana
H. C. Spencer, Waco, Texas
C. H. Springer, North Fort Myers, Florida
C. L Svensen, Austin, Texas
AMERICAN SOCIETY OF CIVIL ENGINEERS
F. J. Kircher, Seelye, Stevenson, Value & Knecht, New York, N.Y.
AMERICAN SOCIETY OF HEATING, REFRIGERATING & AIR CONDITIONING ENGINEERS
Fritz Honerkamp, Anemostat Corporation of America, Scranton, Pennsylvania
H. J. Donovan, Alternate, Carrier Corporation, Syracuse, New York
H. P. Tinning, Alternate, American Society of Heating, Refrigerating & Air Conditioning Engineers, New York, N.Y.
AMERICAN SOCIETY OF MECHANICAL ENGINEERS, THE
N. L Bean, Dearborn, Michigan
A. R. Machell, Jr., Xerox Corporation, Rochester, New York
F. L Spalding, University of Illinois, Urbana, Illinois
ASSOCIATION OF AMERICAN RAILROADS
M. F. McCorcle, St. Louis-San Francisco Railway, Springfield, Missouri
BENDIX CORPORATION, THE (KANSAS CITY DIVISION)
L L Anderson, The Bendix Corporation, Kansas City Division, Kansas City, Missouri
BRITISH STANDARDS INSTITUTION
J. R. Tole, Liaison, A.E.I. (Rugby) Ltd., Rugby, Warwickshire, England
BUSINESS EQUIPMENT MANUF ACTURERS ASSOCIATION
W. T. Borton, International Business Machines Corporation, Endicott, New York
CANADIAN STANDARDS ASSOCIATION
E. A. Sprenger, Liaison, Dominion Engineering Works Ltd., Montreal, P.Q, Canada
ILLUMINATING ENGINEERING SOCIETY
L. E. Barbrow, National Bureau of Standards, Washington, D.C.
C. L Crouch, Alternate, Illuminating Engineering Society, New York, N.Y.
INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, THE
C. R. Muller, Western Union Technology Center, Mahwah, New Jersey
G. H. Pearsall, Consolidated Edison Company of New York, Inc., New York, N. Y.
C. A. Fricke, Alternate, Philco Corporation, Fort Washington, Pennsylvania
MANUF ACTURING CHEMISTS' ASSOCIATION, INC.
J. E. Ross, E. I. duPont de Nemours & Co., Inc., Wilmington, Delaware
MANUFACTURERS STANDARDIZATION SOCIETY OF THE VALVE AND FITTINGS INDUSTRY
R. V. Warrick, Manufacturers Standardization Society of the Valve & Fittings Industry, New York, N.Y.
iv
~
NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION
C. H. Bayer, General Electric Company, Schenectady, New York
W. A. Samsonoff, Alternate, National Electrical Manufacturers Association, New York, N. Y.
NATIONAL FLUID POWER ASSOCIATION
J. L. Fisher, Jr., Bellows-Valvair, Akron, Ohio
NATIONAL MACHINE TOOL BUILDERS' ASSOCIATION
L. G. Glesmann, Gleason Works, Rochester, New York
RADIO CORPORATION OF AMERICA
S. H. Watson, Radio Corporation of America, Camden, New Jersey
SOCIETY OF AUTOMOTIVE ENGINEERS
George Garcina, General Motors, Indianapolis, Indiana
Harold Guetz/aff, John Deere Waterloo Tractor Works, Waterloo, Iowa
R. F. Trowbric/ge, General Motors Technical Center, Warren, Michigan
John Long, Alternate, General Motors Technical Center, Warren, Michigan
Lee Porter, Alternate, General Electric Company, West Lynn, Massachusetts
SOCIETY OF MANUFACTURING ENGINEERS
Joe Penn, Indianapolis, Indiana
SOCIETY OF NAVAL ARCHITECTS AND MARINE ENGINEERS
G. R. Daniels, Quincy, Massachusetts
TECHNICAL DRAWING ASSOCIATES
W. Zbinc/en, Eltra Corporation, Toledo, Ohio
B. J. Rounc/, Alternate, Combustion Engineering, Inc., Windsor, Connecticut
TELEPHONE GROUP, THE
M. C. Berryman, Western Electric Company, Inc., Chicago, Illinois
C. H. Heller, Bell Telephone Laboratories, Inc., Holmdel, New Jersey
G. Sawyer, Alternate, Bell Telephone Laboratories, Inc., Murray Hill, New Jersey
TRADE AND HIGH SCHOOL GROUP
Frank Scott, Belleville Junior College, Belleville, Illinois
U.S. DEPARTMENTOF THE ARMY
C. A. Nazian, Frankford Arsenal, Philadelphia, Pennsylvania
U.S. DEPARTMENT OF COMMERCE
D. M. Mills, The Commissioner of Patents, Washington, D.C.
U.S. DEPARTMENT OF THE NAVY
Coc/e 6033, U.S. Navy Department, Washington, D.C.
J. E. Walter, Alternate, Naval Air Systems Command, Washington, D.C.
INDIVIDUAL MEMBER
R. F. Franciose, General Electric Company, Schenectady, New York
PERSONNEL OF SUBCOMMITTEE 15 ON ELECTRICAL AND ELECTRONIC DIAGRAMS
CHAIRMEN
S. H. Horowitz, Chairman, Y14.15 (1964-1967), American Electric Power Service Corp., New York, New York 10008
C. R. Muller, Chairman - Task Group, No. I, (1965), Western Union Technology Center, Mahwah, New Jersey
W. C. Fulton, Chairman - Task Group, No.2, Westinghouse Electric Corp., East Pittsburgh, Pennsylvania
TASK GROUP NO. 1 - MEMBERS
S. Alvine, Jr., Kearfott Products Div., General Precision, Inc., Little Falls, N.J.
V. W. Bennett, Chairman (1954-1964), Bell Telephone Laboratories, Inc., Holmdel, N.J.
V. W. Chabal, Radio Corporation of America, Camden, N.J.
E. M. Eckharc/t, Tawl-Ned, Picatinny Arsenal, Dover, N.J.
C. A. Fricke, Philco Corp., Tech. Rep. Div., Ft. Washington, Pa.
L. Green, Raytheon Company, Wayland, Mass.
L. E. Keogh, Grumman Aircraft Engrg. Corp., Bethpage, N. Y.
G. A. Knapp, General Electric Co., Utica, N.Y.
J. A. Lepore, Bell Telephone Laboratories, Inc., Whippany Rd., Whippany, N.J.
L. A. Meac/ows, Dept. of the Navy, Bureau of Ships, Washington, D.C.
E. Mi/ler, Westinghouse Electric Corp., Baltimore, Md.
O. I. Norc/rum, U.S. Army Electronics Laboratories, Ft. Monmouth, N.J.
B. N. Orr, Procurement and Production, Hq, U.S. Army Electronics Command, Ft. Monmouth, N.J.
v
T ASK GROUP NO. 1 - CORRESPONDING MEMBERS
C. J. Eiwen, American Machine and Foundry Co., Alexandria, Va.
J. M. Gloss, Hughes Aircraft Co., Culver City, Calif.
Y. C. Meigs, North American Aviation, Inc., Anaheim, Calif.
T. T. Robertson, Sandia Corp., Albuquerque, N.M.
TASK GROUP NO. 2 - MEMBERS
H. C. Barnes, American Electric Power Service Corp., New York, N.Y.
S. C. Ewing, General Electric Co., Salem, Virginia
R. B. Harvey, Ebasco Services, New York, New York
W. L. Healy, American Standards Association (formerly with General Electric Co., Philadelphia, Pa.)
J. P. Houck, Westinghouse Electric Corp., East Pittsburgh, Pa.
L L. MacDonald, Public Service Electric & Gas Co., Newark, New Jersey
L E. Markle, Westinghouse Electric Corp., Buffalo, New York
J. J. Moyer, Bureau of Ships, Washington, D.C.
H. Muller, American Electric Power Service Corp., New York, New York
D. L Pierce, Westinghouse Electric Corp., Buffalo, New York
D. A. Roberson, TSE, ARO Inc., Tullahoma, Tenn.
R. E. Seddon (formerly Chairman), E. I. duPont de Nemours & Co., Wilmington, Delaware
K. R. Walch, General Electric, Philadelphia, Pa.
J. Youngblood, Detroit Edison Co., Detroit, Michigan
PAST MEMBERS
R. C. Luca (1963-1965), Sperry Gyroscope Co., Great Neck, Long Island, N. Y.
J. L Kallas (1963-1967), Bell Telephone Laboratories, Whippany, N.J.
J. Kovac (1954-1963), Bell Telephone Laboratories, Whippany, N.J.
A. T. Nintze/, (1955-1963), Sperry Gyroscope Co., Great Neck, Long Island, N. Y.
D. C. Bowen (Chairman Y14.15 1954-1959), Radio Corp. of America, Camden, N.j.
S. Campagna (1954-1961), Sylvania Electric Products Inc., Buffalo, N.Y.
vi
CONTENTS
15-11 Interconnection Diagrams ....................................
15-11.1 Types of Interconnection Diagrams. . . . . . . . . . • . . . . . . . . . . . . .
Page
I
1
15-11.2 General Principles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . .
15-11.2.1 Layout.............................................
15-11.2.2 Identification of Major Items. . . . . . . . . . . . . . . . . • . . • . . . . .
15-11.2.3 Graphic Symbols ....................•................
15-11.2.4 Connecting Lines ................................... .
15-11.2.5 Terminals ..............................•...........
15-11.2.6 Connector Identification ............................. .
15-11.2.6.1 Connector Contact Identification ..................•.
15-11.2.7 Wire and Cable Identification ......................... .
15-11.2.7.1 Wire Color Information ............................ .
15-11.2.7.2 Wire Size (area) .................................. .
15-11.2.8 Supplementary Information ........•..................•.
1
1
1
15-1l.3 Wiring Type Diagrams .................................. .
15-11.3.1 Continuous Line (Point-to-Point) ..................... .
15-11.3.2 Continuous Line (Highway) .......................... .
15-11.3.2.1 Branched Highways .............................. .
15-11.3.2.2 Unbranched Highways ...•....•............•.......
15-11.3.3 Interrupted Line .................................... .
15-11.3.4 Tabular .......................................... .
15-11.3.5 Wire Run Code ........................••.•..........
2
2
15-1l.4 Cabling Type Diagrams .............•....................
15-11.4.1 Diagrammatic .. -.................................... .
15-11.4.2 Tabular ........................................... .
15-11.4.3 Identification of Cables .....•...•....................
vii
1
1
2
2
2
2
2
2
3
3
3
3
3
3
4
4
4
4
FIGURES
Page
11-1
Simple Continuous Line (Point-to-Point) Interconnection Diagram
(Electronics or Communication Application Illustrated). . . . . .. . . . .
4
Typical Industrial Control Schematic Diagram Showing Terminal and
Interconnection Designations
(Power Switchgear or Industrial Control Application Illustrated) . . .
5
Typical Continuous Line (Point-to-Point) Interconnection Diagram
(Power Switchgear or Industrial Control Application Illustrated) . . .
5
Simple Continuous Line (Highway Unbranched) Interconnection
Diagram
(Electronics or Communication Application Illustrated). . . . . . . . . . .
6
Simple Continuous Line (Highway Branched) Interconnection Diagram
(Electronics or Communication Application Illustrated). . . . . . . . . . .
6
Typical High~ay Interconnection Diagram With Cable Route Numbers
(Power Switchgear or Industrial Control Application Illustrated) . . .
6
Portion of Typical Tabular Wiring Information - Unit Oriented
(Electronics or Communication Application Illustrated). . . . . . . . . . .
7
Portion of Typical Tabular Wiring Information - Circuit Oriented
(Electronics or Communication Application Illustrated) . . . . . . . . . . .
8
Portion of Typical Tabular Form of Interconnection Wiring
Information
(Power Switchgear or Industrial Control Application Illustrated) . . .
8
11-10 Interconnection Cabling Information in Diagrammatic Form
(Electronics or Communication Application Illustrated) . . . . . . . . . . .
9
11-11 Interconnection Cabling Information in Tabular Form
(Electronics or Communication Application Illustrated). . . . . . . . . . .
9
11-2
11-3
11-4
11-5
11-6
11-7
11-8
11-9
viii
ANSI Y14.l5a - 1971
AMERICAN NATIONAL STANDARD
DRAFTING PRACTICES
Electrical and Electronics Diagrams
(b) Reference Designation or equivalent
notation, if assigned
(c) Nomenclature or Identification Number,
if required.
Additional information, such as Schematic
Diagrams or Internal Connection Diagram identifications may also be shown. Device designations
on diagrams for Power Switchgear and Industrial
Control shall be applied as described in 15-9.2.3.
Reference designations shall be in accordance
with American National Standard Y32.16.
15-11 Interconnection Diagrams
The following subparagraphs. contain information on the preparation of Interconnection Diagrams. This material is a supplement of the
general material of Section 15-3.
15-11.1 Types o/Interconnection Diagrams
Interconnection Diagrams showing connections
between major items (assemblies, units, equipment, etc.) may be prepared in two types, each
of which may be prepared by different methods,
as follows:
1. . Wiring Type (showing each wire)
(a) Diagrammatic
1) Continuous Line
a) Point-to-Point
b) Highway
2) Interrupted Line
(b) Tabular
2. Cabling Type (showing primarily only
cables)
(a) Diagrammatic
(b) Tabular
Within each type anyone or combinations of
the methods may be used. Combinations of the
two types and of the methods are permitted, if
clarity is maintained.
Internal connections within the major items
are usually omitted on Interconnection Diagrams.
For convenience or clarity, partial internal connection, schematic, or circuit function information
may be included on the Interconnection Diagram.
15-11.2 General Principles
15-11. 2.1 Layout
Major items shall be represented by squares,
rectangles, or circles.
The arrangement of items on the diagram
should provide the utmost in clarity for the
detailed interconnection information.
Views should be shown as though all connections are in one plane. If the relative location
of major items, terminals, tenninal boards, connectors, etc. is not clear, a physical-location
diagram shall accompany or be referenced on the
diagram or tabular list (see 15-10.6.6).
15-11.2.2 Identification of Major Items
Each major item shall be identified by the
following:
(a) Functional Title
15-11.2.3 Graphic Symbols
Graphic symbols shall be in accordance with
15-3.6. A selection of symbols frequently used
to designate cabling details is shown in Figure
10-8. (See also 15-10.3.19.) On wiring type diagrams, for multi-conductor or shielded cable,
coaxial cable, and waveguide, the transmission
path recognition symbol shall be shown at least
once on each path and at additional points as
needed for clarity.
15-11. 2.4 Connecting Lines
Connecting lines (whether representing wires
individually, grouped, or cabled) shall be drawn
as straight lines running vertically or horizontally. Parallel lines shall be spaced at intervals
which will not be less than 0.06 inches when the
diagram is reduced to ultimate use size. The
longer parallel lines shall be arranged in groups,
preferably three to a group, with approximately
double spacing between groups. Routing should
be shown in a direct and logical path between
tenninals.
15-11. 2. 5 Terminals
Terminals may be shown in symbol form or
the symbols may be omitted and the individual
connecting lines terminated at the item outline.
In either case, the terminal shall be identified.
Reference designations, if assigned, shall be
shown for individual terminals, terminal boards,
connectors, etc. Individual terminals of a device
shall be identified:
(a) According to the markings on the device,
if assigned.
(b) According to the markings assigned on
the Schematic or Connection Diagrams if designations have been arbitrarily assigned.
1
AMERICAN NATIONAL STANDARD
INTERCONNECTION DIAGRAMS - SECT. 15-11
ANSI Y14.l5a - 1971
(c) If no prior assignment exists, according
to an arbitrary system explained in the interconnection information.
to put it in general notes. In other cases, the
informacion may be shown inserted in a break in
the individual connecting lines, once (in the
center) if the lines are short, near each end for
moderate length connecting lines, or if the lines
are long as many times as necessary to preserve
continuity. The highway or interrupted methods
may also be used or the information may be shown
in tabular form on the diagram.
15-11.2.6 Connector Identification
Each connector shall be identified by its
reference designation, if assigned, or by its part
number or an equivalent identification adjacent
to its symbol unless:
(a) The connectors are part of a prefabricated
or field fabricated cable assembly whose reference
designation, part number or other identification
is referenced in the interconnection information
and this supplementary information is available
to fully identify the connectors at each end of
the cable.
(b) The connectors are of only one type
covered by an explanatory note in the interconnection information.
If cable assembly numbers are not referenced
or not made available with the interconnection
information, the information provided for each
connector shall include identification of its accessories such as adaptors, cable clamps, sealing cups, etc. together with any special assembly instructions which may be required.
Connector reference designations need not
be shown consecutively. See ANSI Y32.16.
See ANSI Y32.16 for more extensive information on the use of reference designations to
identify cables under various conditions.
15-11.2.7.1 Wire Color Information
Wire colors shall be identified in accordance with 15-3.11 .. Equivalent designations
printed on the wire may also be used.. On highway and point-to-point diagrams, this data shall
be shown inserted in a break in the connecting
lines, or keyed to a tabular list shown or referenced on the diagram.
15-11.2.7.2 Wire Size {area}
The wire size shall be stated using the
gauge size (for example AWG) or for larger sizes,
the area in thousands of circular mils followed
by the multiplier symbol k (e.g. 300k, 1500k).
For thermocouple leads add the wire type .. For
coaxial cables, wave guides, etc., the wire size
should be replaced by a type designation.
15-11.2.6.1 Connector Contact Identification
15-11.2.8 Supplementary Information
Connector contacts shall be identified:
(a) According to the markings on the connector, if assigned,
(b) According to the markings assigned
on the Schematic or Connection Diagrams if designations have been arbitrarily assigned,
(c) If no prior assignment exists, according to an arbitrary system explained in the interconnection information.
Supplementary data, such as wire lengths,.
wire end preparation requirements, in~~allation
instructions, etc .. may also be included in the
interconnection information.
15-11.3 Wiring Type Diagrams
The wiring type of an Interconnection Diagram shall show individually, each connection to
be made between major items represented on the
diagram to facilitate the tracing of an electrical
circuit from one major item to another. It may also
be used as a planning guide for establishing
interconnecting cable requirements. It may also
be prepared for any type of circuit (signal, power,
or control) or level of a system; in its simplest
form it may show the wiring between only two
major items. See Figures 11-1 and 11-7. Special
requirements for the point-to-point, highway,
interrupted line, and tabular methods are given
in the following paragraphs. A combination of
diagrammatic and tabular methods may be used.
15-11. 2.7 Wire and Cable Identification
Interconnection Diagrams shall, when required, include the following:
For individual wires:
(a) Wire color information if the wire is so
identified.
(b) Wire size (area).
(c) Wire type (voltage rating, construction,
shielding, specification, etc.).
For cables:
(a) Nomenclature, if assigned, or part
number.
(b) Reference designation or equivalent
identification if assigned.
(c) Cable type designation.
Where this information is common to a large
number of connections, it may be more convenient
15-11.3.1 Continuous Line Point-to-Point
In continuous line (point-to-point) diagrams,
an individual connecting line shall be shown
between each pair of terminals to be connected.
Each connecting line shall be identified according to 15-11.2.7 and may include a Wire Run
Code (or an explanatory note describing the
2
AMERICAN NATIONAL STANDARD
INTERCONNECTION DIAGRAMS - SECT. 15-11
ANSI Y14.l5a - 1971
destination of the wires) and the circuit function
of the connection (if applicable). These identifications shall be placed in breaks in the connecting line. This method is primarily useful for simple circuits with few connections. See Figures
11-1 and 11-3.
In Figure 11-3, the wire designations WI,
W2 and W3 were included only to relate the wires
with the interconnecting wires on the Schematic
Diagram in Figure 11-2.
15-11.3.2 Continuous Line - Highway
In continuous line (highway diagrams), each
connecting line shall be brought out from its
termination for a short distance, identified as
specified in the following paragraphs and then
gathered or grouped with others having the same
general destination, into a single common line.
Highway lines may be branched or unbranched.
The use of the 'highway method is preferred
when there is a large number of point-to-point
interconnecting lines which would otherwise
clutter the drawin~ and make it difficult to follow.
15-11.3.2.1 Branched Highways
Each connection shall have near one termination, shown in separate breaks, the following
type of information:
(a) Wire run code
(b) Opposite end destination
(c) Function (if applicable)
Near the other termination, the wire run
code and opposite end destination only shall be
shown in separate breaks. See Figure 11-4.
(a) According to 15-11.2.7
(b) With its opposite end destination, and
with additional optional information such as wire
run code or function.
Interrupted line methods require convenient
destination designations to precede actual terminal designations. Either of the following may
be used:
(a) If reference designations are assigned,
complete or partial reference designations (as
required for clarity) may be shown prominently at
each major item. The destination reference designation shall precede the terminal designation,
thus: lA7TB3-24.
(b) An arbitrary letter or number may be
assigned and shown prominently at each major
item. The destination letter or number shall
precede the terminal designation, thus: E-24 or
5-24.
15-11.3.4 Tabular
Connections between terminals may be prepared as lines of information in a list. The recommendations of 15-10.6 also apply to tabular
Interconnection Di agrams.
Figure 11-7 and 11-8 are examples of unit
oriented and circuit oriented tabular Interconnection Diagrams respectively.
The information in the two illustrations is
not for the same equipment.
An illustration of the tabular method applied
in the Power Switchgear or Industrial Control
Field is shown in Figure 11-9. This is for the
same circuits shown in Figures 11-2 and 11-6.
Tabular listings should be supplemented
(as required) by the data listed in 15-10.6.6.
15-11.3.2.2 Unbranched Highways
Each connection shall have near one termination, shown in separate breaks, the following
type of information:
(a) Wire run code
(b) Function (if applicable)
Near the other termination, the Wire Run
Code only shall be shown in a break. See Figure
11-5.
For Power Switchgear and Industrial Control Diagrams, designations may be assigned
arbitrarily and shown inside or adjacent to the
grouping symbol as shown in Figure 11-6. These
arbitrary designations may also be used to indicate wire or cable route numbers, specific conduits or raceways, etc. If the terminal designations at each end are different, wire designations
shall be assigned.
15-11.3.5 Wire Run Code
A wire run code may be used to identify
each electrical wire, and its circuit function.
The code may range from a simple number used
for reference between diagrams, tabular lists,
and other instructions, to a combination of letters and numbers assigned according to an or-.
ganized system. It may include some or all of
the information required by 15-11.2.7. Wire run
codes are normally assigned on an overall systems basis. When used they shall be in agreement with the information shown on the Schematic
Diagram, and the Internal Connection Diagrams.
For examples of wire run codes see Figure 11-1.
11-4, and 11-5.
15-11.3.3 Interrupted Line
In interrupted line diagrams, each connecting
line shall be brought out from its termination for
a short distance and at the end of each connecting line identified as follows:
3
AMERICAN NATIONAL STANDARD
INTERCONNECTION DIAGRAMS - SECT. 15-11
15-11.4 Cabling Type Diagrams
The diagram shall show each cable to be run
between the various major items represented.
Special requirement~ for diagrammatic and tabularmethods are given in the following paragraphs.
A combination of diagrammatic and tabul~r methods may be used, if appropriate. Incidental
information primarily of a wiring form may also
be included, if desired.
15-11.4.1 Diagrammatic
This may be a continuous line or an interrupted line diagram (see Figure 11-10 for continuous line type). Each cable shall be represented by a single line running between two or
more items connected by the cable. Connectors,
terminal boards, etc. shall be represented by
the single-line form of graphic symbols. Identification of individual terminals of a connector,
terminal board or other device are usually omitted.
ANSI Y14.l5a - 1971
15-11.4.2 Tabular
Each cable shall be represented by one or
more lines of data in a list. The recommendations of· 15-10.6 in part also apply to tabular
cabling information. The connection data for the
individual wires of the cable are normally not
included as this tabular list is primarily a summary of interconnection cables. Figure 11-11 is
an example of an Interconnection Cabling Diagram
in tabular form. The tabular listings should be
supplemented (as required) by the data listed in
15-10.6.6.
15-11.4.3 Identification of Cables
Each cable assembly or field prepared cable
shall be fully identified in accordance with
15-11. 2.6 and 15-11. 2.7. If the information is not
provided on the diagram, the diagram shall reference the documents containing the information.
UNIT 2
r-----,
UNIT 1
I-I
AMPLIFIER
(PART NO.)
I
I
I
WS
1--_ _ _ _ _ _ n84A20 _ _ lUVAC
I
L__
I
I
t------- '1'R85A20 _ _ 1l5VAC
COMPUTER
(PART NO.)
1 - - - - - - - - TR86A20 - - -28VDC
1--_ _ _ _ _ _ '1'R87A20 _ _ +28VDC
WSPl
MSSl16FlO-6PW
I
I
WSP2
HSSl16FlO-6
__J
FIGURE 11-1
SIMPLE CONTINUOUS LINE (POINT-TO-POINT) INTERCONNECTION DIAGRAM
(ELECTRONICS OR COMMUNICATION APPLICATION ILLUSTRATED)
4
AMERICAN NATIONAL STANDARD
INTERCONNECTION DIAGRAMS - SECT. 15-11
ANSI Y14.15a - 1971
l1S VAC CONTROL SOURCE
DEVICE FUNCTION DESIGNATION
EQUIPMENT LOCATION
INTERCONNECTION WIRE DESIGNATION
TR-A
•
X n r---t
'\. TERMINAL
DESIGNATION
CR·S
--~
?2 -'A8 --1
.........
W3
W2
~--~--~--~
9
7
W2
~~~-""'1 M·A}---------n
4
lM·A
~----------~ ~I----------~------~
DEVICE LOCATIONS:
lM·A ON PANEL A
2M·A ON PANE L A
TR·A ON PANEL A
CR-B ON PANEL S
M·C ON PANEL C
FIGURE 11-2 - TYPICAL INDUSTRIAL CONTROL SCHEMATIC DIAGRAM SHOWING TERMINAL AND
INTERCONNECTION DESIGNATIONS
(POWER SWITCHGEAR OR INDUSTRIAL CONTROL APPLICATION ILLUSTRATED)
REAR VIEW
REAR VIEW
REAR VIEW
~~ELB
I~:NELA
I
r~:NELC
I
I
W1 W2
I
L_W L_-w-J
I
W3
W3
W1
W2 W3
W2
2/C 19/25 AWG
3/C 191 2S AWG
2-lIC 12 AWG
115 VAC
SOURCE
FIGURE 11-3 - TYPICAL CONTINUOUS LINE (POINT-TO-POINT) INTERCONNECTION DIAGRAM
(POWER SWITCHGEAR OR INDUSTRIAL CONTROL APPLICATION ILLUSTRATED)
5
AMERICAN NATIONAL STANDARD
INTERCONNECTION DIAGRAMS - SECT. 15·11
ANSI Y14.15a - 1971
:~16F8-4S\of
UNIT 1
ft75A20_2Jl-A.-115VAC
I
•AMPLIFIER
2Jl
ft7WO_2Jl_B-115VAC~'1'R76A20_1Jl-B
B
ft77A20-2J2-A.-Sl-B2
ft78A20-2J2-B-S2-B2
ft79A20 - 2J2-C- Sl-B2
(PART NO.)
r
1_ _-
UNIT 2
TR7SA20_1Jl-~A
i--
l
-
:
COMPUTER
CTR77A20_1Jl~-C(PART NO.)
'1'R78A20 _ lJl-D
B
TR79A20_1Jl-E
C
I
W1.P3
I
MS3116PlO-6
__ - l
W1
B
I
WlP1
MS311.6Pl2-10PW
2J2
FIGURE 11·4 - SIMPLE CONTINUOUS LINE (HIGHWAY BRANCHED) INTERCONNECTION DIAGRAM
(ELECTRONICS OR COMMUNICATION APPLICATION ILLUSTRATED)
UNIT 1
r~··:··
TRS0A20 --115VAC
'1'RSlA20 --l1SVAC
~t--~~----1E
'1'RSD.uO
.
W2
'1'RS1A20
TR82A20
TR83A20
V2P2
KS3106A-22-4S
V2Pl
MS3106A-22-4p
FIGURE 11·5 - SIMPLE CONTINUOUS LINE (HIGHWAY UNBRANCHED) INTERCONNECTION DIAGRAM
(ELECTRONICS OR COMMUNICATION APPLICATION ILLUSTRATED)
r--'
REAR VIEW
REAR VIEW
I
REAR VIEW
:--1
r---i
PANEL-A
:
PAN E L B
:
Irmrnl
W1W2W
ld;J
~
I
--rrr'rr-~101
I
PAN E L C
I
I
nrn
i
~rl~
W3Wl W2
02
TO 115 VAC
_J SOURCE
")2-lIC12AWG
;
L___ .JLC.J!t.2~~'!'t ___ J
W2 W3
10J
PANELL~
Bl
103
TO
__]PANEL
C
2/C 19/25 AWG
TO
FIGURE 11-6 - TYPICAL HIGHWAY INTERCONNECTION DIAGRAM WITH CABLE ROUTE NUMBERS
(POWER SWITCHGEAR OR INDUSTRIAL CONTROL APPLICATION ILLUSTRATED)
6
AMERICAN NATIONAL STANDARD
INTERCONNECTION DIAGRAMS - SECT. 15-11
ANSI Y14.l5a - 1971
TO
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FIGURE 11-7 - PORTION OF TYPICAL TABULAR WIRING INFORMATION - UNIT ORIENTED
(ELECTRONICS OR COMMUNICATION APPLICATION ILLUSTRATED)
r"
7
1
1
AMERICAN NATIONAL STANDARD
INTERCONNECTION DIAGRAMS - SECT. 15·11
ANSI Y14.15a - 1971
~
..-----------------------------------------------------------------------_._---------------------------------------------------+
•
.UV.
FROM
I
TO
~---+--------------------------+------------------------.TI FU.
COliN
ISGICIIITRM: FU I
Fino ISGICHITRMI
.....------...
--+--------+--------------...
-------+-----+----....-...------+
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CABLl
: Wllll I CABLlaCAaLlan: IIUN :
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lIT S'R
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..... flew
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3-202-2
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025-08 10001
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- - 1001
120IPOI-CR
.... SP. lC02
M20IPOZ-02
..... flew
3-202-2
t".
02!5-08 WOOOI
000012
- - 1001
11201 POI-03
... " I IC02
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3-202-2
t"l
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..... flew
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025-08 10001
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025-08 '10001
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• II. 5'. lOll
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lIT S'R
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-
FIGURE 11·8 - PORTION OF TYPICAL TABULAR WIRING INFORMATION - CIRCUIT ORIENTED
(ELECTRONICS OR COMMUNICATION APPLICATION ILLUSTRATED)
R
E
PANEL A
PANEL B
PANEL C
CONTROL SOURCE
GROUP
~
INT I L CONN REFEREN~
MFR
D\1G SH FIG.
2
XY'7. 12345 1
ABC 6789_0 _6 5
1810 GH
EQUIPMENT NAME
V
NO
101
PURPOSE
CONTROL
102
PWR SUP
103
CONTROL
-
-
--
-
ROUTING
-
CABLE
-
-
-
WIRE COLOR
VOLTAGE
FROM '.IlmM
TO
TERM DESIG CODE
DESCR
115 AC
PANEL A 2 EtHEL B
8
~/C 1Q/25
W1
BK
4
W2
R
TYPE TW
9
Y
W
600V
W3
7
115 AC
PANEL A X PONTROL
X
BK
2/VC 12
Y
SOURCE
Y
W
TYPE RH 6cg
115 AC
PANELE 7 ~ANEL C
2
W
W3
2/C 19L2~
1
W2
R
TYPE TWfnN
9
-
- --
l-.
~~.......--
-...r-.. . .---~
FIGURE 11·9 - PORTION OF TYPICAL TABULAR FORM OF INTERCONNECTION WIRING INFORMATION
(POWER SWITCHGEAR OR INDUSTRIAL CONTROL APPLICATION ILLUSTRATED)
8
AMERICAN NATIONAL STANDARD
INTERCONNECTION DIAGRAMS - SECT. 15·11
ANSI Y14.l5a - 1971
UNIT 3
:.: ::;l
__ J
II •I
CONTROL UNIT
(PART NO.)
2J1
W2
3J1
W2P2
W1P2
W1
W1 Pl .
UNIT 1
UNIT 4
I--~
RF UNIT
(PART NO.)
I
I
t
I
L ___. . . .
INDICATOR
(PART NO.)
I
I
__ ..J
I
FIGURE 11.10 - INTERCONNECTION CABLING INFORMATION IN DIAGRAMMATIC FORM
(ELECTRONICS OR COMMUNICATION APPLICATION ILLUSTRATED)
NO ~.-.
10
&0
140.
so
~O
-
c ••a.c
ITIM
.,..,.
-~
I~-
.'!lIz,
.t.
~-
IL • •,. ..
wa
..,~
_IT
4..
~"-}
-
1. ...M.l
MSTtlllAT......
MIl DI".
co....
wa"a
• •T ,
I_WS.
""..!'!_1I
....
-~ww.'"
..,
_~.,.s.
wap
+.,1
UNIT'
U"~
c_ .. ·
UMI-"",
~a
w ......
~;r~
a"';[,
•
..I.,Z:7.
FIGURE 11·11 - INTERCONNECTION CABLING INFORMATION IN TABULAR FORM
(ELECTRONICS OR COMMUNICATION APPLICATION ILLUSTRATED)
9