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AS/NZS 3008.1.1:1998

AS/NZS 3008.1.1:1998

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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Electrical installations - Selection of cables - Cables for alternating voltages up to and including 0.6/1 kV - Typical Australian installation conditions

Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Superseded date

06-30-2017

Superseded by

AS/NZS 3008.1.1:2009

Language(s)

English

Published date

01-01-1998

Publisher

Standards Australia

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Hardcopy - English
PDF 1 User - English
PDF 3 Users - English
PDF 5 Users - English
PDF 9 Users - English
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1 - AS/NZS 3008.1.1:1998 ELECTRICAL INSTALLATIONS-SELECTION OF CABLES - CABLES FOR ALTERNATING VOLTAGES UP TO AND INCLUDING .....
4 - PREFACE
5 - CONTENTS
10 - FOREWORD
11 - SECTION 1 SCOPE AND GENERAL
11 - 1.1 SCOPE AND APPLICATION
11 - 1.1.1 Scope
11 - 1.1.2 Application
11 - 1.2 ALTERNATIVE SPECIFICATIONS
12 - 1.3 REFERENCED AND RELATED DOCUMENTS
12 - 1.3.1 Referenced documents
12 - 1.3.2 Related documents
13 - 1.4 DEFINITIONS
13 - 1.4.1 Ambient temperature
13 - 1.4.2 Continuous loading
13 - 1.4.3 Ladder support
13 - 1.4.4 Perforated tray
13 - 1.4.5 Route length
14 - SECTION 2 CABLE SELECTION PROCEDURE
14 - 2.1 GENERAL
14 - 2.2 SELECTION PROCESS
14 - 2.3 DETERMINATION OF MINIMUM CABLE SIZE BASED ON CURRENT-CARRYING CAPACITY CONSIDERATIONS
15 - 2.4 DETERMINATION OF MINIMUM CABLE SIZE BASED ON VOLTAGE DROP CONSIDERATIONS
16 - 2.5 DETERMINATION OF MINIMUM CABLE SIZE BASED ON THE SHORT-CIRCUIT TEMPERATURE CONSIDERATIONS
17 - SECTION 3 CURRENT-CARRYING CAPACITY
17 - 3.1 RATINGS
17 - 3.1.1 General
17 - 3.1.2 Basis
17 - 3.2 TYPES OF CONDUCTORS
17 - 3.2.1 Conductor material
17 - 3.2.2 Insulation material operating temperatures
18 - 3.3 TYPES OF CABLE
18 - 3.3.1 Sheathed and unsheathed thermoplastic, elastomer and XLPE cables
18 - 3.3.2 Flexible cords and cables
19 - 3.3.3 Mineral-insulated metal-sheathed (MIMS) cables
19 - 3.3.4 Aerial cables
19 - 3.3.5 Neutral-screened cables
20 - 3.3.6 High temperature elastomer, polymeric or fibrous cables and flexible cords
20 - 3.3.7 Other cable types
20 - 3.4 INSTALLATION CONDITIONS
20 - 3.4.1 General
20 - 3.4.2 Cables installed in air
21 - 3.4.3 Cables installed in thermal insulation
22 - 3.4.4 Cables buried direct in the ground
22 - 3.4.5 Cables installed in underground wiring enclosures
23 - 3.4.6 Variation of installation conditions along cable run
23 - 3.5 EXTERNAL INFLUENCES ON CABLES
23 - 3.5.1 Application of rating factors
23 - 3.5.2 Effect of grouping of cables
25 - 3.5.3 Effect of ambient temperature
26 - 3.5.4 Effect of depth of laying
26 - 3.5.5 Effect of thermal resistivity of soil
26 - 3.5.6 Effect of varying loads
26 - 3.5.7 Effect of thermal insulation
27 - 3.5.8 Effect of direct sunlight
67 - SECTION 4 VOLTAGE DROP
67 - 4.1 GENERAL
67 - 4.2 DETERMINATION OF VOLTAGE DROP FROM MILLIVOLTS PER AMPERE METRE
68 - 4.3 DETERMINATION OF VOLTAGE DROP FROM CIRCUIT IMPEDANCE
68 - 4.3.1 General
68 - 4.3.2 Single-phase, two-wire supply system
69 - 4.3.3 Three-phase, three-wire or four-wire supply system
69 - 4.3.4 Two-phase, three-wire, earthed neutral 120-degree supply system
69 - 4.3.5 Single-phase, three-wire, earthed centre-tapped 180-degree supply system
69 - 4.4 DETERMINATION OF VOLTAGE DROP FROM CABLE OPERATING TEMPERATURE
70 - 4.5 DETERMINATION OF VOLTAGE DROP FROM LOAD POWER FACTOR
72 - 4.6 DETERMINATION OF VOLTAGE DROP IN UNBALANCED MULTIPHASE CIRCUITS
92 - SECTION 5 SHORT-CIRCUIT PERFORMANCE
92 - 5.1 GENERAL
92 - 5.2 FACTORS GOVERNING THE APPLICATION OF THE TEMPERATURE LIMITS
93 - 5.3 CALCULATION OF PERMISSIBLE SHORT-CIRCUIT CURRENTS
93 - 5.4 INFLUENCE OF METHOD OF INSTALLATION
94 - 5.5 MAXIMUM PERMISSIBLE SHORT-CIRCUIT TEMPERATURES
94 - 5.5.1 General
94 - 5.5.2 Insulating materials
94 - 5.5.3 Outer sheath and bedding materials
95 - 5.5.4 Conductor and metallic sheath materials and components
96 - APPENDIX A - EXAMPLES ON THE SELECTION OF CABLES TO SATISFY CURRENT-CARRYING CAPACITY, VOLTAGE DROP AND SHORT-CIRCUIT....
96 - A1 EXAMPLE 1
96 - A1.1 Problem
96 - A1.2 Solution
97 - A1.3 Comparison of different methods
98 - A2 EXAMPLE 2
98 - A2.1 Problem
98 - A2.2 Solution
98 - A3 EXAMPLE 3
98 - A3.1 Problem
98 - A3.2 Solution
99 - A4 EXAMPLE 4
99 - A4.1 Problem
99 - A4.2 Solution
100 - A5 EXAMPLE 5
100 - A5.1 Problem
100 - A5.2 Solution
101 - A6 EXAMPLE 6
101 - A6.1 Problem
101 - A6.2 Solution
102 - A7 EXAMPLE 7
102 - A7.1 Problem
102 - A7.2 Solution
103 - A8 EXAMPLE 8
103 - A8.1 Problem
103 - A8.2 Solution
105 - APPENDIX B - RECOMMENDED CIRCUIT CONFIGURATIONS FOR THE INSTALLATION OF SINGLE-CORE CABLES IN PARALLEL

Sets out the procedures to be followed for the selection of cables to satisfy typical Australian installation conditions where the ambient air temperature is 40 degrees Celsius and ambient soil temperature is 25 degrees Celsius. Criteria given are current-carrying capacity, voltage drop and short-circuit temperature rise.

Committee
EL-001
DocumentType
Standard
ISBN
0 7337 1709 8
Pages
95
PublisherName
Standards Australia
Status
Superseded
SupersededBy
Supersedes
UnderRevision

This Standard sets out a method for cable selection for those types of electrical cables and methods of installation which are in common use at working voltages up to and including 0.6/1 kV at 50 Hz a.c.Three criteria are given for cable selection, as follows:(a) Current-carrying capacity.(b) Voltage drop.(c) Short-circuit temperature rise.This Standard provides sustained current-carrying capacities and voltage drop values for those types of electrical cable and installation practices in common use in Australia. A significant amount of explanatory material is also provided on the application of rating factors which arise from the particular installation conditions of a single circuit or groups of circuits. Also, provided in Section 5 is information on cable selection based on short-circuit temperature limits.NOTE: A number of worked examples on cable selection are included in Appendix A.This Standard does not take into account the effects that may occur owing to temperature rise at the terminals of equipment and reference is necessary to AS 3000 and the individual equipment Standards.ApplicationThis Standard is intended to apply to installations made or carried out after the date of publication, but it is recommended that it not be applied on a mandatory basis until 6 months after the date of publication. However, if work on an installation commenced before publication of this edition, the inspecting authority may grant permission for the installation to be carried out in accordance with the superseded edition.

First published in Australia as AS 3008.1-1984.
Second edition 1989.
Jointly revised and redesignated AS/NZS 3008.1.1:1998.

AS/NZS 3198:1996 Approval and test specification - Electric cables - XLPE insulated - For working voltages up to and including 0.6/1 kV
AS 3158-1994 Approval and test specification - Electric cables - Glass fibre insulated for working voltages up to and including 0.6/1 kV
AS 1125-1993 Conductors in insulated electric cables and flexible cords
AS/NZS 3155:1995 Approval and test specification - Electric cables - Neutral screened - For working voltages up to and including 0.6/1 kV
AS 3178-1991 Approval and test specification - Electric cables - Silicone rubber insulated - For working voltages up to and including 0.6/1 kV
AS 3560-1991 Electric cables - XLPE insulated - Aerial bundled - For working voltages up to and including 0.6/1 kV
AS 3000-1986 Electrical installations - Buildings, structures and premises (known as the SAA Wiring Rules)
AS 1746-1991 Conductors - Bare overhead - Hard-drawn copper
AS 3147-1992 Approval and test specification - Electric cables - Thermoplastic insulated - For working voltages up to and including 0.6/1 kV
AS/NZS 3116:1996 Approval and test specification - Electric cables - Elastomer insulated - For working voltages up to and including 0.6/1 kV
AS/NZS 3187:1995 Approval and test specification - Mineral-insulated metal-sheathed cables
AS/NZS 3191:1996 Approval and test specification - Electric flexible cords
AS 1531-1991 Conductors - Bare overhead - Aluminium and aluminium alloy (Reconfirmed 2016)

AS/NZS 3560.1:2000 Electric cables - Cross-linked polyethylene insulated - Aerial bundled - For working voltages up to and including 0.6/1(1.2) kV Aluminium conductors (Reconfirmed 2021)
AS/NZS 3018:2001 Electrical installations - Domestic installations
AS/NZS 3015:2004 Electrical installations - Extra-low voltage d.c. power supplies and service earthing within public telecommunications networks
AS/NZS 2832.1:1998 Cathodic protection of metals - Pipes and cables
AS 2239-2003 Galvanic (sacrificial) anodes for cathodic protection
AS/NZS 5000.1:2005 Electric cables - Polymeric insulated For working voltages up to and including 0.6/1 (1.2) kV (Reconfirmed 2017)
AS/NZS 3947.3:2001 Low-voltage switchgear and controlgear Switches, disconnectors, switch-disconnectors and fuse-combination units
AS 2832.1-2004 Cathodic protection of metals Pipes and cables
AS/NZS 61535.1(INT):2001 Installation couplers General requirements
AS/NZS 4026:2001 Electric cables - For underground residential distribution systems
AS 4722-2009 Passenger ropeways and passenger conveyors
AS 1674.2-2003 Safety in welding and allied processes - Electrical
AS/NZS 3191:2008 Electric flexible cords (Reconfirmed 2019)
AS/NZS 3003:1999 Electrical installations - Patient treatment areas of hospitals and medical and dental practices
AS/NZS 5033:2005 Installation of photovoltaic (PV) arrays
AS/NZS 3004.2:2008 Electrical installations - Marinas and recreational boats Recreational boats installations
AS/NZS 3003:2003 Electrical installations - Patient treatment areas of hospitals and medical, dental practices and dialyzing locations
AS/NZS 4026:2008 Electric cables - For underground residential distribution systems
AS/NZS 3191:2003 Electric flexible cords
AS/NZS 61535.1:2003 Installation couplers General requirements
AS/NZS 3000:2007 Electrical installations (known as the Australian/New Zealand Wiring Rules)
AS 2067-2008 Substations and high voltage installations exceeding 1 kV a.c.
DR 00391 Conductors - Covered overhead - For working voltages 6.35/11(12)kV up to and including 19/33(36)kV
AS/NZS 3012:2003 Electrical installations - Construction and demolition sites
AS/NZS 3947.3 SUPP 1:2001 Low-voltage switchgear and controlgear Switches, disconnectors, switch-disconnectors and fuse-combination units - Fuse-switch-disconnectors and switch-disconnectors for use with low-voltage aerial bundled cables (Supplement to AS/NZS 3947.3:2001)
AS 1049.1-2008 Telecommunication cables - Insulation, sheath and jacket Materials
AS 2832.2-2003 Cathodic protection of metals Compact buried structures
AS/NZS 3000:2000 Electrical installations (known as the Australian/New Zealand Wiring Rules)
AS/NZS 3560.2:2003 Electric cables - Cross-linked polyethylene insulated - Aerial bundled - For working voltages up to and including 0.6/1 (1.2) kV Copper conductors
AS/NZS 5000.1:2003 Electric cables - Polymeric insulated For working voltages up to and including 0.6/1 (1.2) kV
AS/NZS 4859.1:2002 Materials for the thermal insulation of buildings General criteria and technical provisions
AS/NZS 1768(INT):2003 Lightning protection
AS/NZS 3808:2000 Insulating and sheathing materials for electric cables (Reconfirmed 2017)
AS/NZS 3599.1:2003 Electric cables - Aerial bundled - Polymeric insulated - Voltages 6.35/11 (12) kV and 12.7/22 (24) kV Metallic screened (Reconfirmed 2021)
HB 301-2001 Electrical installations - Designing to the Wiring rules

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