AS/NZS 3008.1.1:1998
Electrical installations - Selection of cables - Cables for alternating voltages up to and including 0.6/1 kV - Typical Australian installation conditions
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 C and ambient soil temperature is 25 degrees C. Criteria given are current-carrying capacity, voltage drop and short-circuit temperature rise.
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AS/NZS 3008.1.1:2009 ELECTRICAL INSTALLATIONS-SELECTION OF CABLES - CABLES FOR ALTERNATING VOLTAGES UP TO AND INCLUDING 0...
PREFACE
CONTENTS
SECTION 1 SCOPE AND APPLICATION
1.1 SCOPE
1.2 APPLICATION
1.3 ALTERNATIVE SPECIFICATIONS
1.4 REFERENCED AND RELATED DOCUMENTS
1.4.1 Referenced documents
1.4.2 Related documents
1.5 DEFINITIONS
1.5.1 Ambient temperature
1.5.2 Continuous loading
1.5.3 Installation wiring
1.5.4 Ladder support
1.5.5 Perforated tray
1.5.6 Route length
SECTION 2 CABLE SELECTION PROCEDURE
2.1 GENERAL
2.2 SELECTION PROCESS
2.3 DETERMINATION OF MINIMUM CABLE SIZE BASED ON CURRENT-CARRYING CAPACITY CONSIDERATIONS
2.4 DETERMINATION OF MINIMUM CABLE SIZE BASED ON VOLTAGE DROP CONSIDERATIONS
2.5 DETERMINATION OF MINIMUM CABLE SIZE BASED ON THE SHORTCIRCUIT TEMPERATURE CONSIDERATIONS
SECTION 3 CURRENTCARRYING CAPACITY
3.1 RATINGS
3.1.1 General
3.1.2 Basis
3.2 TYPES OF CONDUCTORS
3.2.1 Conductor material
3.2.2 Insulation material operating temperatures
3.3 TYPES OF CABLE
3.3.1 Sheathed or unsheathed thermoplastic, crosslinked elastomeric and XLPE insulated cables
3.3.2 Flexible cords and cables
3.3.3 Mineralinsulated metalsheathed (MIMS) cables
3.3.4 Aerial cables
3.3.5 Neutralscreened cables
3.3.6 High temperature crosslinked elastomeric, polymeric or fibrous insulated cables and flexible cords
3.3.7 Other cable types
3.4 INSTALLATION CONDITIONS
3.4.1 General
3.4.2 Cables installed in air
3.4.3 Cables installed in thermal insulation
3.4.4 Cables buried direct in the ground
3.4.5 Cables installed in underground wiring enclosures
3.4.6 Variation of installation conditions along cable run
3.5 EXTERNAL INFLUENCES ON CABLES
3.5.1 Application of rating factors
3.5.2 Effect of grouping of cables
3.5.3 Effect of ambient temperature
3.5.4 Effect of depth of laying
3.5.5 Effect of thermal resistivity of soil
3.5.6 Effect of varying loads
3.5.7 Effect of thermal insulation
3.5.8 Effect of direct sunlight
3.5.9 Effect of harmonic currents on balanced three-phase systems
3.5.10 Effect of parallel cables
3.5.11 Effect of electromagnetic interference
SECTION 4 VOLTAGE DROP
4.1 GENERAL
4.2 DETERMINATION OF VOLTAGE DROP FROM MILLIVOLTS PER AMPERE METRE
4.3 DETERMINATION OF VOLTAGE DROP FROM CIRCUIT IMPEDANCE
4.3.1 General
4.3.2 Singlephase, twowire supply system
4.3.3 Threephase, threewire or fourwire supply system
4.3.4 Two-phase, three-wire, earthed neutral 120degree supply system
4.3.5 Singlephase, threewire, earthed centretapped 180degree supply system
4.4 DETERMINATION OF VOLTAGE DROP FROM CABLE OPERATING TEMPERATURE
4.5 DETERMINATION OF VOLTAGE DROP FROM LOAD POWER FACTOR
4.6 DETERMINATION OF VOLTAGE DROP IN UNBALANCED MULTIPHASE CIRCUITS
SECTION 5 SHORT-CIRCUIT PERFORMANCE
5.1 GENERAL
5.2 FACTORS GOVERNING THE APPLICATION OF THE TEMPERATURE LIMITS
5.3 CALCULATION OF PERMISSIBLE SHORTCIRCUIT CURRENTS
5.4 INFLUENCE OF METHOD OF INSTALLATION
5.5 MAXIMUM PERMISSIBLE SHORTCIRCUIT TEMPERATURES
5.5.1 General
5.5.2 Insulating materials
5.5.3 Outer sheath and bedding materials
5.5.4 Conductor and metallic sheath materials and components
APPENDIX A - EXAMPLES OF THE SELECTION OF CABLES TO SATISFY CURRENTCARRYING CAPACITY, VOLTAGE DROP AND SHORTCIRCUIT...
A1 EXAMPLE 1
A1.1 Problem
A1.2 Solution
A1.3 Comparison of different methods
A2 EXAMPLE 2
A2.1 Problem
A2.2 Solution
A3 EXAMPLE 3
A3.1 Problem
A3.2 Solution
A4 EXAMPLE 4
A4.1 Problem
A4.2 Solution
A5 EXAMPLE 5
A5.1 Problem
A5.2 Solution
A6 EXAMPLE 6
A6.1 Problem
A6.2 Solution
A7 EXAMPLE 7
A7.1 Problem
A7.2 Solution
A8 EXAMPLE 8
A8.1 Problem
A8.2 Solution
APPENDIX B - LIST OF TABLES
APPENDIX C - EXAMPLES OF THE APPLICATION OF REDUCTION FACTORS FOR HARMONIC CURRENTS
APPENDIX D - RECOMMENDED CIRCUIT CONFIGURATIONS FOR THE INSTALLATION OF SINGLECORE CABLES IN PARALLEL
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References
Approval and test specification - Electric cables - Elastomer insulated - for working voltages up to and including 0.6/1 kV
Approval and test specification - Mineral-insulated metal-sheathed cables
Approval and test specification - Electric cables - XLPE insulated - For working voltages up to and including 0.6/1 kV
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AS/NZS 3008.1.1:2009 ELECTRICAL INSTALLATIONS-SELECTION OF CABLES - CABLES FOR ALTERNATING VOLTAGES UP TO AND INCLUDING 0...
PREFACE
CONTENTS
SECTION 1 SCOPE AND APPLICATION
1.1 SCOPE
1.2 APPLICATION
1.3 ALTERNATIVE SPECIFICATIONS
1.4 REFERENCED AND RELATED DOCUMENTS
1.4.1 Referenced documents
1.4.2 Related documents
1.5 DEFINITIONS
1.5.1 Ambient temperature
1.5.2 Continuous loading
1.5.3 Installation wiring
1.5.4 Ladder support
1.5.5 Perforated tray
1.5.6 Route length
SECTION 2 CABLE SELECTION PROCEDURE
2.1 GENERAL
2.2 SELECTION PROCESS
2.3 DETERMINATION OF MINIMUM CABLE SIZE BASED ON CURRENT-CARRYING CAPACITY CONSIDERATIONS
2.4 DETERMINATION OF MINIMUM CABLE SIZE BASED ON VOLTAGE DROP CONSIDERATIONS
2.5 DETERMINATION OF MINIMUM CABLE SIZE BASED ON THE SHORTCIRCUIT TEMPERATURE CONSIDERATIONS
SECTION 3 CURRENTCARRYING CAPACITY
3.1 RATINGS
3.1.1 General
3.1.2 Basis
3.2 TYPES OF CONDUCTORS
3.2.1 Conductor material
3.2.2 Insulation material operating temperatures
3.3 TYPES OF CABLE
3.3.1 Sheathed or unsheathed thermoplastic, crosslinked elastomeric and XLPE insulated cables
3.3.2 Flexible cords and cables
3.3.3 Mineralinsulated metalsheathed (MIMS) cables
3.3.4 Aerial cables
3.3.5 Neutralscreened cables
3.3.6 High temperature crosslinked elastomeric, polymeric or fibrous insulated cables and flexible cords
3.3.7 Other cable types
3.4 INSTALLATION CONDITIONS
3.4.1 General
3.4.2 Cables installed in air
3.4.3 Cables installed in thermal insulation
3.4.4 Cables buried direct in the ground
3.4.5 Cables installed in underground wiring enclosures
3.4.6 Variation of installation conditions along cable run
3.5 EXTERNAL INFLUENCES ON CABLES
3.5.1 Application of rating factors
3.5.2 Effect of grouping of cables
3.5.3 Effect of ambient temperature
3.5.4 Effect of depth of laying
3.5.5 Effect of thermal resistivity of soil
3.5.6 Effect of varying loads
3.5.7 Effect of thermal insulation
3.5.8 Effect of direct sunlight
3.5.9 Effect of harmonic currents on balanced three-phase systems
3.5.10 Effect of parallel cables
3.5.11 Effect of electromagnetic interference
SECTION 4 VOLTAGE DROP
4.1 GENERAL
4.2 DETERMINATION OF VOLTAGE DROP FROM MILLIVOLTS PER AMPERE METRE
4.3 DETERMINATION OF VOLTAGE DROP FROM CIRCUIT IMPEDANCE
4.3.1 General
4.3.2 Singlephase, twowire supply system
4.3.3 Threephase, threewire or fourwire supply system
4.3.4 Two-phase, three-wire, earthed neutral 120degree supply system
4.3.5 Singlephase, threewire, earthed centretapped 180degree supply system
4.4 DETERMINATION OF VOLTAGE DROP FROM CABLE OPERATING TEMPERATURE
4.5 DETERMINATION OF VOLTAGE DROP FROM LOAD POWER FACTOR
4.6 DETERMINATION OF VOLTAGE DROP IN UNBALANCED MULTIPHASE CIRCUITS
SECTION 5 SHORT-CIRCUIT PERFORMANCE
5.1 GENERAL
5.2 FACTORS GOVERNING THE APPLICATION OF THE TEMPERATURE LIMITS
5.3 CALCULATION OF PERMISSIBLE SHORTCIRCUIT CURRENTS
5.4 INFLUENCE OF METHOD OF INSTALLATION
5.5 MAXIMUM PERMISSIBLE SHORTCIRCUIT TEMPERATURES
5.5.1 General
5.5.2 Insulating materials
5.5.3 Outer sheath and bedding materials
5.5.4 Conductor and metallic sheath materials and components
APPENDIX A - EXAMPLES OF THE SELECTION OF CABLES TO SATISFY CURRENTCARRYING CAPACITY, VOLTAGE DROP AND SHORTCIRCUIT...
A1 EXAMPLE 1
A1.1 Problem
A1.2 Solution
A1.3 Comparison of different methods
A2 EXAMPLE 2
A2.1 Problem
A2.2 Solution
A3 EXAMPLE 3
A3.1 Problem
A3.2 Solution
A4 EXAMPLE 4
A4.1 Problem
A4.2 Solution
A5 EXAMPLE 5
A5.1 Problem
A5.2 Solution
A6 EXAMPLE 6
A6.1 Problem
A6.2 Solution
A7 EXAMPLE 7
A7.1 Problem
A7.2 Solution
A8 EXAMPLE 8
A8.1 Problem
A8.2 Solution
APPENDIX B - LIST OF TABLES
APPENDIX C - EXAMPLES OF THE APPLICATION OF REDUCTION FACTORS FOR HARMONIC CURRENTS
APPENDIX D - RECOMMENDED CIRCUIT CONFIGURATIONS FOR THE INSTALLATION OF SINGLECORE CABLES IN PARALLEL
AS/NZS 3008.1.1:1998
Online Library subscription information
Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team.