Folks,
This is an electronic version of Electronic Installation Practices Manual, Chapter 9, Cabling , NAVSHIPS 900171, 1951 with Change 2, 23 May 1952.
Museum ships stabilizing or restoring their electrical systems will appreciate many parts of the manual. Items such as the proper ways of working with armored cable, lacing, etc. are included.
Readers of this manual will also find a Unit Course in Marine Electricity Submarine Electrical Installations
In addition to errors we have attempted to preserve from the original
this text was captured by optical character recognition. This process creates errors that are compounded while encoding for the Web.
Please report any typos, or particularly annoying layout issues to
the Mail Feedback Form for correction.
Richard Pekelney
ELECTRONIC INSTALLATION
PRACTICES MANUAL
BUREAU OF SHIPS NAVY DEPARTMENT
Approved 27 June 1951
LIST OF EFFECTIVE PAGES
Page Numbers Change in Effect Page Numbers Change in Effect
Title Page Change 2 9-38 to 9-58 Original
A Page Change 2 9-59 Change 1
i to vi Original 9-60 to 9-94 Original
9-1 Original 9-95 Change 2
9-2 Change 2 9-96 Change 1
9-3 to 9-5 Original 9-97 to 9-99 Original
9-6 to 9-14 Change 2 9-100 Change 1
9-15 to 9-36 Original 9-101 to 9-110 Original
9-37 Change 2 i-1 to i-8 Change 2
A
ELECTRONIC INSTALLATION
This manual is intended for the use of the electronic
installation worker. It may be used as a reference book
on installation practices or in training beginners in Naval
electronic installation work.
Subject matter in this text is intended as supplementary
to, but not superseding existing and applicable specifications.
Appreciation is extended to the various Naval Shipyards,
Commercial Firms, Service Representatives and Manufacturers who were contacted and without whose cooperation this manual would not be possible.
TABLE OF CONTENTS
SECTION 1 - GENERAL DESCRIPTION
Paragraph Page
1. Introduction 9-1
2. Types of Cables 9-1
a. Heat and Flame Resistant Cables 9-1
b. Reduced-Diameter Cables 9-1
c. Cables for Repeated Flexing Service 9-1
d. Other Cable Types 9-2
e. Watertight and Non-Watertight Cable 9-2
3. Designation of Conductor Size 9-3
4. Multiple Conductor Cable Designations 9-3
5. Selection of Cable Size 9-3
6. Basic Cable Installation Data 9-3
a. Cable Connections 9-3
b. Cable Entrances 9-3
c. Passing Through Decks and Bulkheads 9-3
d. Cable Bends 9-3
e. Supporting Cable on Decks and Bulkheads 9-3
SECTION 2 - CHOOSING PROPER SIZE
1. Cable Service Ratings 9-4
a. General Cable Ratings 9-4
b. Restricted Cable Ratings 9-4
c. Isolated Cable Ratings 9-4
2. Choosing Cable Size 9-4
3. Use of Table 9-2 9-17
4. Mathematical Means of Determining Cable Length 9-17
SECTION - 3 INSTALLING CABLE STRAPS AND HANGERS
Paragraph Page
1. Utilization of Spares 9-20
2. Method of Making Straps 9-20
3. Mounting Cable Straps 9-20
SECTION 4 - INSTALLING IN WIRE WAYS
1. Introduction 9-31
2. Handling Cable 9-31
a. Bending 9-31
b. Low Temperatures 9-31
3. Grouping Cables 9-32
4. Laying Cable in Wireways 9-32
5. Passing Through Bulkheads 9-34
a. NWT Bulkheads 9-34
b. WT Bulkheads 9-34
6. Appliance Entrances 9-34
SECTION 5 - NUMBERING CABLES AND CONDUCTORS
1. Introduction 9-40
2. Identification of Cables 9-40
3. Electronic Cable Designations 9-40
4. Color Banding 9-40
5, Definitions 9-41
6. Classification 9-41
7. Tags 9-41
8. Conductor Marking 9-41
SECTION 6 - PREPARING FOR INSTALLATION
1. Introduction 9-49
2. Removing the Armor 9-49
i
SECTION 6 - PREPARING FOR INSTALLATION (Cont'd.)
Paragraph Page
3. Stripping Insulation 9-53
4. End Sealing 9-59
5. Applying Terminal Lugs 9-90
6. Tests After Installation 9-92
a. Telephone Headsets 9-92
(1) Test for Continuity 9-92
(2) Test for Shorted Conductors 9-92
(3) Test for Grounded Conductors 9-92
b. Lamp or Buzzer and Battery 9-92
(1) Test for Continuity 9-92
(2) Test for Shorted Conductors 9-92
(3) Test for Grounded Conductors 9-92
c. The Megohmmeter 9-92
7. Special Cable Considerations 9-95
SECTION 7 - LACING AND BINDING
Paragraph Page
1. Introduction 9-98
2. Purpose of Lacing and Binding 9-98
3. Methods 9-98
4. Lacing Materials 9-98
5. Length of Cord 9-98
6. Spares 9-98
7. Starting 9-98
8. Lacing 9-103
9. Breakouts 9-103
10. Bends 9-103
11. An Alternate Method 9-103
12. Termination 9-103
13. Two or More Cables 9-103
ii
LIST OF ILLUSTRATIONS
SECTION 2-CHOOSING SIZE AND CALCULATING VOLTAGE
Figure Title Page
9-1 Resistivity Vs. Temperature 9-18
SECTION 3-INSTALLING CABLE STRAPS AND HANGERS
9-2 Method of Supporting Single Cables 9-21
9-3 Method of Supporting Cables 9-22
9-4 Method of Supporting a Single Row of Cables on Steel Decks and W. T. Bulkheads 9-23
9-5 Method of Supporting Multiple Rows of Cables on Steel Decks 9-23
9-6 Method of Supporting Two Rows of Cables on Steel Bulkheads 9-24
9-7 Method of Supporting Two Rows of Cables on Steel Bulkheads Having Insulation 9-25
9-8 Stud Secured by the Welding Process 9-26
9-9 Method of Supporting Cable Using Channel 9-28
9-10 Typical Kickpipe Assembly 9-29
9-11 Cable Strap Formation 9-30
SECTION 4-INSTALLATION IN WIRE WAYS
9-12 Arranging Cables in Wireways 9-33
9-13a Method of Running Cables Through N. W. T. Bulkheads 9-35
Figure Title Page
9-13b Method of Running Cables Through N. W. T. Bulkheads 9-36
9-13c Method of Running Cables Through N. W. T. Bulkheads 9-37
9-14 Methods of Making up Cable Ends, Cable Entering Bottom of Enclosure 9-38
9-15 Cable Clamps-Commercial Type 9-39
SECTION 5-NUMBERING CABLES AND CONDUCTORS
9-16 Typical Cable Tags 9-46
SECTION 6-PREPARING FOR INSTALLATION
9-17 Removing Armor from Cable (forming) 9-51
9-18 Removing Armor from Cable (diagonals cut) 9-52
9-19 Removing Insulation from Cable. 9-54
9-20 Removing Insulation from Cable (knife cut) 9-55
9-21 Removing Insulation from Cable (cutting strip) 9-56
9-22 Removing Insulation from Cable (use of side cutters) 9-57
9-23 Removing Insulation from Cable (pulling strip) 9-58
9-24 Methods of Making Up Cable Ends, Enclosed Equipment W. T. and N. W. T. 9-60
9-25 Methods of Making Up Cable Ends, Open Equipment 9-61
iii
LIST OF ILLUSTRATIONS
SECTION 6-PREPARING FOR INSTALLATION (Cont'd.)
Figure Title Page
9-26 Typical Assembly of Molded Packing in Tube, Size "A" 9-62
9-27 Typical Assembly of Molded Packing in Tube, Size "B" 9-63
9-28 Typical Assembly of Molded Packing in Tube, Size "C" 9-64
9-29 Typical Assembly of Molded Packing in Tube, Size "D" 9-65
9-30 Typical Assembly of Molded Packing in Tube, Size "E" 9-66
9-31 Arrangements for Sealing Cable Ends in Molded Packing Size "A" 9-67
9-32 Arrangements for Sealing Cable Ends in Molded Packing Size "A" 9-68
9-33 Arrangements for Sealing Cable Ends in Molded Packing Size "A". 9-69
9-34 Arrangements for Sealing Cable Ends in Molded Packing Size "B" 9-70
9-35 Arrangements for Sealing Cable Ends in Molded Packing Size "B" 9-71
9-36 Arrangements for Sealing Cable Ends in Molded Packing Size "B" 9-72
9-37 Arrangements for Sealing Cable Ends in Molded Packing Size "B" 9-73
Figure Title Page
9-38 Arrangements for Sealing Cable Ends in Molded Packing Size "B" 9-74
9-39 Arrangements for Sealing Cable Ends in Molded Packing Size "C" 9-75
9-40 Arrangements for Sealing Cable Ends in Molded Packing Size "C" 9-76
9-41 Arrangements for Sealing Cable Ends in Molded Packing Size "A" 9-77
9-42 Arrangements for Sealing Cable Ends in Molded Packing Size "A" 9-78
9-43 Arrangements for Sealing Cable Ends in Molded Packing Size "A" 9-79
9-44 Arrangements for Sealing Cable Ends in Molded Packing Size "B" 9-80
9-45 Arrangements for Sealing Cable Ends in Molded Packing Size "B" 9-81
9-46 Arrangements for Sealing Cable Ends in Molded Packing Size "C" 9-82
9-47 Arrangements for Sealing Cable Ends in Molded Packing Size "C" 9-83
9-48 Arrangements for Sealing Cable Ends in Molded Packing Size "D" 9-84
9-49 Arrangements for Sealing Cable Ends in Molded Packing Size "D" 9-85
iv
LIST OF ILLUSTRATIONS
SECTION 6-PREPARING FOR INSTALLATION(Cont'd.)
Figure Title Page
9-50 Arrangements for Sealing Cable Ends in Molded Packing Size "C" 9-86
9-51 Arrangements for Sealing Cable Ends in Molded Packing Size "C" 9-87
9-52 Arrangements for Sealing Gable Ends in Molded Packing Size "E" 9-88
9-53 Arrangements for Sealing Cable Ends in Molded Packing Size "E" 9-89
9-54 Features of Aircraft Marine Products Solderless Terminal 9-91
9-55 Typical Methods of Measuring Insulation Resistance of a Cable Circuit 9-94
9-56 Coaxial Line - TTRSA Coupler 9-96
9-57 Navy Type TTRS and TTRSA cables-Method of Finishing Ends of Shielded Pairs 9-97
SECTION 7-LACING AND BINDING
Figure Title Page
9-58 Lacing Shuttle 9-99
9-59 Telephone Hitch 9-100
9-60 Lacing Started With Square Knot and Two Lock Stitches 9-101
9-61 Starting a Lace With a Lock Stitch 9-102
9-62 Running the Lace 9-104
9-63 Method of Lacing at Breakouts 9-105
9-64 Method of Lacing Where Cable Divides into Branches 9-106
9-65 Method of Lacing at a Bend 9-107
9-66 Method of Lacing Cables using Individual Bindings 9-108
9-67 Method of Terminating the Lace 9-109
9-68 Method of Lacing Where Two or More Cables run together 9-110
v
LIST OF TABLES
SECTION 2-CHOOSING PROPER SIZE CALCULATING VOLTAGE DROP
Table Title Page
9-1a Heat and Flame Resistant, Non-Flexing Service 9-7
9-1b Heat and Flame Resistant, Non-Flexing Service 9-8
9-1c Heat and Flame Resistant, Non-Flexing Service 9-9
9-1d Special Purpose Cables 9-10
9-1e Twisted Pair Telephone, Armored 9-11
9-1f Heat, Flame, Oil Resistant, Repeated Flexing Service 9-12
9-1g Heat, Flame, Oil Resistant, Repeated Flexing Service 9-13
9-1h Heat, Flame, Oil Resistant, Repeated Flexing Service 9-14
9-1i Steel Stuffing Tube Information 9-15
9-2 Maximum Allowable Length of Cable Run for a Given Load with a 2% Voltage Drop 9-16
SECTION 5-NUMBERING CABLES AND CONDUCTORS
Table Title Page
9-3a Circuit Letters Designations (Radio, Countermeasures) 9-42
9-3b Circuit Letters Designations (Beacons, Sonar, Search Radar) 9-43
9-3c Circuit Letters Designations (F. C. Radar, IFF) 9-44
9-3d Circuit Letters Designations (I. C. and F. C.) 9-45
9-4 Color Identifications 9-47
9-5 Navy Standard Color Code for Conductors 9-48
vi
