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  • AS/NZS 3008.1.1:1998

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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    Superseded date:  30-06-2017

    Language(s):  English

    Published date:  01-01-1998

    Publisher:  Standards Australia

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    Table of Contents - (Show below) - (Hide below)

    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

    Abstract - (Show below) - (Hide below)

    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.

    Scope - (Show below) - (Hide below)

    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.

    General Product Information - (Show below) - (Hide below)

    Committee EL-001
    Document Type Standard
    Publisher Standards Australia
    Status Superseded
    Superseded By
    Supersedes
    Under Revision

    History - (Show below) - (Hide below)

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

    Standards Referenced By This Book - (Show below) - (Hide below)

    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)

    Standards Referencing This Book - (Show below) - (Hide below)

    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
    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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