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AS/NZS 3000:2018

[Current]

Electrical installations (known as the Australian/New Zealand Wiring Rules)

Included in Electrical installation set
AS NZS 3000 2018 (known as the Australian/New Zealand Wiring Rules) specifies requirements for the design, construction and verification of electrical installations, including the selection and installation of electrical equipment forming part of such electrical installations. Part 1 provides provisions that constitute the minimum regulatory requirements for a safe electrical installation. Part 2 provides work methods and installation practices that are ‘deemed to comply’ with the requirements of Part 1.
Published: 26/06/2018
Pages: 574
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Foreword
1 Scope, application and fundamental principles
1.1 Scope
1.2 Application
1.3 Referenced documents
1.4 Definitions
1.4.1 Application of definitions
1.5 Fundamental principles
1.5.1 Protection against dangers and damage
1.5.2 Control and isolation
1.5.3 Protection against electric shock
1.5.3.1 General
1.5.3.2 Methods of protection
1.5.4 Basic protection
1.5.4.1 General
1.5.4.2 Methods of protection
1.5.4.3 Protection by insulation
1.5.4.4 Protection by barriers or enclosures
1.5.4.5 Protection by obstacles
1.5.4.6 Protection by placing out of reach
1.5.5 Fault protection
1.5.5.1 General
1.5.5.2 Methods of protection
1.5.5.3 Protection by automatic disconnection of supply
1.5.5.4 Protection by the use of Class II equipment or by equivalent insulation
1.5.5.5 Protection by electrical separation
1.5.6 Additional protection by the use of RCDs
1.5.6.1 Basic protection
1.5.6.2 Fault protection
1.5.6.3 Where required
1.5.7 Basic and fault protection by use of extra-low voltage
1.5.8 Protection against thermal effects in normal service
1.5.9 Protection against overcurrent
1.5.10 Protection against earth fault currents
1.5.11 Protection against abnormal voltages
1.5.11.1 General
1.5.11.2 Circuits operating at different voltages
1.5.11.3 Voltage disturbances and electromagnetic influences
1.5.11.4 Voltage in unused conductors
1.5.11.5 Different circuits and installations
1.5.12 Protection against the spread of fire
1.5.13 Protection against injury from mechanical movement
1.5.14 Protection against external influences
1.6 Design of an electrical installation
1.6.1 General
1.6.2 Supply characteristics
1.6.3 Maximum demand
1.6.4 Utilization voltage
1.6.5 Electrical installation circuit arrangement
1.7 Selection and installation of electrical equipment
1.7.1 General
1.7.2 Installation work practice
1.7.3 Equipment selection
1.7.4 Damp situations
1.8 Verification (inspection and testing)
1.9 Means of compliance
1.9.1 Compliance with Part 2 of this Standard
1.9.2 Compliance with the requirements of other standards
1.9.3 Alterations and repairs
1.9.3.1 Alterations
1.9.3.2 Repairs
1.9.4 Compliance by specific design and installation
1.9.4.1 Use of a Part 1 design
1.9.4.2 Acknowledgment by the owner or operator of the electrical installation and retainment of design documentation
1.9.4.3 Documentation (by the designer)
1.9.4.4 Verification
1.9.4.5 Competency requirements of designers
1.9.4.6 Identification
2 General arrangement, control and protection
2.1 General
2.1.1 Application
2.1.2 Selection and installation
2.2 Arrangement of electrical installation
2.2.1 Circuits
2.2.1.1 General
2.2.1.2 Origin of submains and final subcircuits
2.2.1.3 Common neutral
2.2.1.4 Electric vehicle charging circuits
2.2.2 Maximum demand
2.2.3 Selection and installation of conductors
2.2.4 Operating characteristics of equipment
2.2.4.1 General
2.2.4.2 Voltage
2.2.4.3 Current
2.2.4.4 Frequency
2.2.4.5 Power
2.2.4.6 Effects on operator or other equipment
2.3 Control of electrical installation
2.3.1 General
2.3.2 Common control requirements
2.3.2.1 General
2.3.2.1.1 All systems
2.3.2.1.2 Alternating current systems
2.3.2.1.3 Direct current systems
2.3.2.2 Devices for isolation
2.3.2.2.1 General
2.3.2.2.2 Identification
2.3.3 Main switches
2.3.3.1 Introduction
2.3.3.2 General
2.3.3.3 Number of main switches
2.3.3.4 Location and operation
2.3.3.5 Identification
2.3.3.6 Remote control
2.3.4 Additional isolating switches
2.3.4.1 Electrical installation in an outbuilding
2.3.4.2 Submains and final subcircuits greater than 100 A
2.3.4.3 Alternative supply
2.3.4.4 Identification
2.3.4.5 Appliances and accessories
2.3.5 Emergency switching including emergency stopping
2.3.5.1 General
2.3.5.2 Emergency switching devices
2.3.5.3 Installation
2.3.5.4 Identification
2.3.6 Shutting down for mechanical maintenance
2.3.6.1 General
2.3.6.2 Devices for shutting down
2.3.6.3 Installation
2.3.6.4 Identification
2.3.7 Functional (control) switching
2.3.7.1 General
2.3.7.2 Functional switching devices
2.3.7.3 Identification
2.3.7.4 Control circuits
2.4 Fault protection
2.4.1 General
2.4.2 Protection by automatic disconnection of supply
2.4.3 Types of devices
2.4.4 Auto-reclose devices
2.5 Protection against overcurrent
2.5.1 General
2.5.1.1 General requirements
2.5.1.2 Consumer mains
2.5.1.3 Submains and final subcircuits—General arrangement
2.5.1.4 Omission of protective device for safety reasons
2.5.2 Devices for protection against both overload and short-circuit currents
2.5.3 Protection against overload current
2.5.3.1 Coordination between conductors and protective devices
2.5.3.2 Position of overload protective device—General arrangement
2.5.3.3 Alternative position of overload protective device
2.5.3.4 Omission of overload protective device
2.5.4 Protection against short-circuit current
2.5.4.1 Determination of prospective short-circuit current
2.5.4.2 Characteristics of short-circuit protective devices
2.5.4.3 Position of devices for short-circuit protection
2.5.4.4 Alternative position of short-circuit protective device
2.5.4.4.1 General
2.5.4.4.2 Condition 1
2.5.4.4.3 Condition 2
2.5.4.5 Omission of devices for short-circuit protection
2.5.5 Protection against switchboard internal arcing fault currents
2.5.5.1 General
2.5.5.2 Reduction of the probability of the initiation of a switchboard internal arcing fault
2.5.5.3 Limitation of the harmful effects of a switchboard internal arcing fault
2.5.6 Coordination of overload and short-circuit protective devices
2.5.6.1 Protection afforded by one device
2.5.6.2 Protection afforded by separate devices
2.5.7 Reliability of supply
2.5.7.1 General
2.5.7.2 Coordination of protective devices
2.5.7.2.1 General
2.5.7.2.2 Safety service circuit discrimination (selectivity)
2.5.7.2.3 General supply circuit discrimination (selectivity)
2.6 Additional protection by residual current devices
2.6.1 General
2.6.2 Selection and arrangement of devices
2.6.2.1 General
2.6.2.2 Types of RCD
2.6.2.2.1 General
2.6.2.2.2 Australia only
2.6.2.2.3 New Zealand only
2.6.2.3 Protection against initiation of fire
2.6.2.4 Arrangement
2.6.3 Additional protection by residual current devices
2.6.3.1 General
2.6.3.2 Installation requirements—Australia only
2.6.3.2.1 General
2.6.3.2.2 Domestic and residential installations—Australia only
2.6.3.2.3 Non-domestic and non-residential installations—Australia only
2.6.3.2.3.1 Types of installations
2.6.3.2.3.2 Location of RCD protection
2.6.3.2.3.3 Requirements for additional protection
2.6.3.2.4 Home care installations—Australia only
2.6.3.2.5 Alterations to installations and replacement of switchboards—Australia only
2.6.3.2.6 Repairs—Australia only
2.6.3.3 Installation requirements—New Zealand only
2.6.3.3.1 Residential installations—New Zealand only
2.6.3.3.2 Non-residential installations—New Zealand only
2.6.3.3.3 Home care installations—New Zealand only
2.6.3.3.4 Additions and alterations—New Zealand only
2.7 Protection against overvoltage
2.7.1 General
2.7.2 Protection by insulation or separation
2.7.3 Protection by protective devices
2.8 Protection against undervoltage
2.8.1 General
2.8.2 Selection of protective device
2.9 Protection against fire hazard due to arcing faults
2.9.1 General
2.9.2 Type
2.9.3 Rating
2.9.4 Arrangement
2.9.5 Alterations
2.9.6 Final subcircuits in Australia
2.9.7 Final subcircuits in New Zealand
2.10 Switchboards
2.10.1 General
2.10.2 Location of switchboards
2.10.2.1 General
2.10.2.2 Accessibility and emergency exit facilities
2.10.2.2.1 Switchboards
2.10.2.2.2 Switchboard rooms
2.10.2.2.3 Switchboard doors and switchboard cupboard doors
2.10.2.3 Location of main switchboard
2.10.2.4 Identification of main switchboard
2.10.2.5 Restricted locations
2.10.3 Construction
2.10.3.1 Access to live parts
2.10.3.2 Suitability
2.10.3.3 Minimum clearances and creepage distances
2.10.3.4 Orientation and location of fuses and circuit-breakers
2.10.3.4.1 Orientation of circuit-breakers
2.10.3.4.2 Location of fuses and circuit-breakers
2.10.3.5 Screw-in fuses
2.10.4 Bars
2.10.4.1 General
2.10.4.2 Tunnel-type terminals
2.10.4.3 Neutral bar
2.10.5 Equipment identification
2.10.5.1 General
2.10.5.2 Relationship of electrical equipment
2.10.5.3 Bars
2.10.5.4 Terminals of switchboard equipment
2.10.5.5 Common neutral
2.10.5.6 Fuse
2.10.6 Wiring
2.10.7 Fire-protective measures
3 Selection and installation of wiring systems
3.1 General
3.1.1 Application
3.1.2 Selection and installation
3.2 Types of wiring systems
3.3 External influences
3.3.1 General
3.3.2 Particular influences
3.3.2.1 Ambient temperature
3.3.2.2 External heat sources
3.3.2.3 Water or high humidity
3.3.2.4 Solid foreign bodies
3.3.2.5 Corrosive or polluting substances
3.3.2.6 Mechanical damage
3.3.2.7 Vibration
3.3.2.8 Other mechanical stresses
3.3.2.9 Flora
3.3.2.10 Fauna
3.3.2.11 Solar radiation (direct sunlight)
3.3.2.12 Hazardous areas
3.3.2.13 Thermal insulation
3.4 Current-carrying capacity
3.4.1 General
3.4.2 Operating temperature limits
3.4.3 Conductors in parallel
3.4.4 Coordination between conductors and protective devices
3.5 Conductor size
3.5.1 General
3.5.2 Neutral conductor
3.5.3 Earthing conductor
3.6 Voltage drop
3.6.1 General
3.6.2 Value
3.6.3 Conductors in parallel
3.7 Electrical connections
3.7.1 General
3.7.2 Connection methods
3.7.2.1 General
3.7.2.1.1 Common requirements
3.7.2.1.2 Aluminium conductors
3.7.2.2 Preparation for connection
3.7.2.3 Loosening of connections
3.7.2.3.1 General
3.7.2.3.2 Crimp joints (compression joints)
3.7.2.4 Mechanical connection devices
3.7.2.5 Retention of stranded conductors
3.7.2.6 Mechanical stress
3.7.2.7 Soldered connections
3.7.2.8 Flexible cords
3.7.2.9 Aerial conductors
3.7.2.9.1 Joints and connections
3.7.2.9.2 Prohibited joints
3.7.2.10 Underground cables
3.7.2.11 Earthing conductors
3.7.3 Joints in cables
3.7.4 Installation couplers
3.8 Identification
3.8.1 General
3.8.2 Colour identification
3.8.2.1 Colour identification by sleeving or other means
3.8.2.2 Sleeving of existing earthing and bonding conductors
3.8.2.3 Sleeving of existing live conductors
3.8.3 Exceptions and special applications
3.8.3.1 General
3.8.3.2 Protective earthing and equipotential conductors
3.8.3.3 Active and neutral conductors
3.8.3.4 Alternative and European cable identification colours
3.8.3.5 Aerial earthing conductors
3.9 Installation requirements
3.9.1 General
3.9.2 Methods of installation
3.9.3 Support and fixing
3.9.3.1 General
3.9.3.2 Suspended ceilings
3.9.3.3 Wiring systems likely to be disturbed
3.9.3.3.1 Location
3.9.3.3.2 Support and protection
3.9.4 Protection against mechanical damage
3.9.4.1 General
3.9.4.2 Wiring systems near building surfaces
3.9.4.3 Wiring systems under wall lining or roofing material
3.9.4.3.1 Prohibited locations
3.9.4.3.2 Protection required
3.9.4.4 Protection methods
3.9.5 Wiring systems installed vertically
3.9.6 Change of direction
3.9.7 Particular installation requirements
3.9.7.1 Consumer mains
3.9.7.1.1 Protected
3.9.7.1.2 Unprotected
3.9.7.2 Insulated and sheathed cables
3.9.7.3 Mineral insulated metal sheathed (MIMS) cable
3.9.7.4 Flexible cords used as installation wiring
3.9.7.5 Low voltage track systems
3.9.7.6 Under-carpet wiring systems
3.9.8 Prevention of mutual detrimental effects between services
3.9.8.1 General
3.9.8.2 Different electrical installations
3.9.8.2.1 Common enclosure/cable
3.9.8.2.2 Segregation
3.9.8.3 Segregation of different voltage levels
3.9.8.4 Proximity to non-electrical services
3.9.9 Selection and installation to minimize the spread of fire
3.9.9.1 General
3.9.9.2 Precautions
3.9.9.3 Penetration of fire barriers
3.9.10 Limitation of circulating and eddy currents
3.9.10.1 General
3.9.10.2 Cables for a.c. circuits—Electromagnetic effects
3.9.10.3 Cables with non-ferrous metal sheathing
3.9.11 Minimization of electromagnetic interference
3.10 Enclosure of cables
3.10.1 General
3.10.1.1 Insulated, unsheathed cables
3.10.1.2 Insulated and sheathed cables
3.10.2 Wiring enclosures
3.10.2.1 Types
3.10.2.2 Change of wiring enclosures
3.10.2.3 Entry of water
3.10.3 Installation of wiring enclosures
3.10.3.1 General
3.10.3.2 Support
3.10.3.3 Continuity
3.10.3.4 Bending
3.10.3.5 Passage for conductors
3.10.3.6 Terminations
3.10.3.7 Installation in direct sunlight
3.10.3.8 Provision for expansion
3.10.3.9 Cable trunking
3.11 Underground wiring systems
3.11.1 Suitability and protection
3.11.2 Classification of wiring systems
3.11.3 Arrangements
3.11.3.1 Category A underground wiring systems
3.11.3.2 Category B underground wiring systems
3.11.3.3 Category C underground wiring system
3.11.4 Installation requirements
3.11.4.1 General
3.11.4.2 Unenclosed cables
3.11.4.3 Category B wiring system mechanical protection
3.11.4.4 Minimum depth of cover
3.11.4.5 Identification of underground wiring
3.11.4.6 Marking and recording of underground cable location
3.11.5 Spacing from other underground services
3.12 Aerial wiring systems
3.12.1 Types of conductor
3.12.2 Arrangements
3.12.2.1 Insulation of aerial conductors
3.12.2.2 Minimum size
3.12.3 Clearances
3.12.3.1 General
3.12.3.2 Safety warnings
3.12.4 Distance between supports (spans)
3.12.5 Aerial conductor supports
3.12.5.1 General
3.12.5.2 Pin-type insulators
3.12.5.3 Hardware
3.12.5.4 Spacing between conductors
3.12.6 Poles and posts (including supports, struts and extensions to structures)
3.12.7 Joints and connections
3.13 Cables supported by a catenary
3.13.1 Types of cables
3.13.2 Catenary supports
3.13.3 Clearances
3.14 Safety services
3.15 Busways, including rising mains systems
3.16 Earth sheath return (ESR) system
4 Selection and installation of electrical equipment
4.1 General
4.1.1 Application
4.1.2 Selection and installation
4.1.3 External influences
4.1.4 Adverse effects and interference
4.1.5 Air extraction systems
4.2 Protection against thermal effects
4.2.1 General
4.2.2 Prevention of fire hazard
4.2.2.1 Installation of electrical equipment
4.2.2.2 Storage of flammable materials
4.2.2.3 Protection from high temperatures
4.2.2.4 Emission of arcs or sparks
4.2.2.5 Electrical equipment enclosures
4.2.2.6 Prevention of spread of fire
4.2.2.7 Thermal insulation—New Zealand only
4.2.3 Protection against burns
4.3 Connection of electrical equipment
4.3.1 General
4.3.2 Direct connection
4.3.2.1 General
4.3.2.2 Installation coupler
4.3.3 Installation wiring connected by an installation coupler(s)
4.3.3.1 General
4.3.3.2 Socket-outlets
4.3.4 Socket-outlets in installation wiring
4.3.5 Other connecting devices
4.3.6 Equipment wiring
4.4 Socket-outlets
4.4.1 Types
4.4.1.1 General
4.4.1.1.1 Socket-outlets—Application
4.4.1.1.2 Socket-outlets—Alternative pin configurations
4.4.1.1.3 Low voltage fixed socket-outlet
4.4.1.2 Different systems
4.4.1.3 Socket-outlets for electric vehicle charging
4.4.2 Location
4.4.2.1 Accessibility
4.4.2.2 Protection of socket-outlets
4.4.3 Earthing contacts
4.4.4 Switching device
4.4.4.1 General
4.4.4.2 Rating
4.4.4.3 Location and marking
4.4.4.4 Pendant-type socket-outlet
4.4.5 Polarization and phase sequence
4.5 Lighting equipment and accessories
4.5.1 Lampholders, including lampholders incorporated in a luminaire
4.5.1.1 Location
4.5.1.2 Edison screw lampholders
4.5.1.3 Festoon lighting
4.5.2 Lamps and luminaires
4.5.2.1 General
4.5.2.2 Lamps near flammable materials
4.5.2.3 Recessed luminaires
4.5.2.3.1 General requirements
4.5.2.3.2 Warning sign
4.5.2.3.3 Installation
4.5.2.3.4 Classifications of recessed luminaires
4.5.2.3.5 Requirements for specific classifications
4.5.2.4 Suspended ceilings
4.6 Smoke alarms
4.7 Cooking appliances
4.7.1 Switching device
4.7.2 Connection—New Zealand only
4.7.3 Clearance from open cooking surfaces
4.8 Appliances producing hot water or steam
4.8.1 General
4.8.2 Water heaters
4.8.2.1 Access to easing equipment of pressure-relief and terminals of protective devices
4.8.2.2 Protective devices fitted to unvented water heaters
4.8.2.3 Isolating switch
4.9 Room heaters
4.9.1 General
4.9.2 Isolating switches
4.9.3 Functional switches
4.10 Electric heating cables for floors and ceilings and trace heating applications
4.10.1 General
4.10.2 Heating cables
4.10.3 Isolating switches
4.10.4 Functional switches
4.10.5 Additional protection
4.10.6 Signs
4.11 Electric duct heaters
4.12 Electricity converters
4.12.1 General
4.12.2 Selection and installation
4.12.3 Control
4.12.4 Isolation
4.12.4.1 General
4.12.4.2 Electricity converters incorporating batteries
4.12.5 Overcurrent protection
4.12.5.1 Electricity converter protection
4.12.5.2 Circuit protection
4.12.5.2.1 General
4.12.5.2.2 RCDs
4.12.6 Earthing
4.12.7 Neutral continuity
4.12.8 Electrical equipment connected to output
4.13 Motors
4.13.1 Protection against injury from mechanical movement
4.13.1.1 Switching devices
4.13.1.2 Rating of switches
4.13.1.3 Devices for starting and stopping
4.13.1.4 Protection against restarting or reversal
4.13.2 Protection against overload
4.13.3 Protection against overtemperature
4.13.3.1 General
4.13.3.2 Protection prohibited
4.13.3.3 Overtemperature protective devices
4.14 Transformers
4.14.1 General
4.14.2 Secondary circuit
4.14.2.1 General
4.14.2.2 Control and protection
4.14.3 Low voltage transformer supply
4.14.3.1 Isolating transformers
4.14.3.2 Other transformers
4.14.4 Autotransformers
4.14.5 Step-up transformers
4.15 Capacitors
4.15.1 General
4.15.2 Electrical equipment
4.15.2.1 General
4.15.2.2 Rating of circuit-breakers, switches or contactors
4.15.2.3 Current-carrying capacity of supply conductors
4.15.3 Provision for discharge and control
4.15.3.1 General
4.15.3.2 Capacitors connected in parallel with individual appliances
4.15.3.3 Capacitors not connected in parallel with individual appliances
4.16 Electrical equipment containing liquid dielectrics
4.16.1 General
4.16.2 Liquid dielectrics having a flashpoint not exceeding 250°C
4.17 Batteries
4.18 Gas appliances and equipment
4.18.1 Gas appliances
4.18.1.1 General
4.18.1.2 In Australia only
4.18.1.3 In New Zealand only
4.18.2 Gas cylinders containing heavier-than-air gases—Outdoors
4.18.2.1 Sources of ignition
4.18.2.2 Hot particles and surfaces
4.18.2.3 Electrical equipment and gas supply—NZ only
4.18.3 Gas cylinders—Indoors—New Zealand only
4.18.4 Gas relief vent terminal—Natural gas, LP Gas or Biogas
4.18.5 Reticulated lighter-than-air gas system, metering system and regulators—New Zealand only
4.19 Airconditioning and heat pump systems
4.20 Lifts
4.20.1 General
4.20.2 Lift supply arrangement
4.20.3 Labelling
4.20.4 Motor-room-less lifts (MRLs)
4.20.4.1 General
4.20.4.2 MRL switchboards
4.20.4.3 Switchgear
5 Earthing arrangements and earthing conductors
5.1 General
5.1.1 Application
5.1.2 Selection and installation
5.1.3 MEN earthing system
5.1.4 Other earthing systems
5.2 Earthing functions
5.2.1 Protective earthing
5.2.2 Functional earthing (FE)
5.2.3 Earthing for combined protective and functional purposes
5.3 Earthing system parts
5.3.1 General
5.3.2 Earthing conductor material and type
5.3.2.1 Conductor material
5.3.2.1.1 Copper conductors
5.3.2.1.2 Aluminium conductors
5.3.2.1.3 Other materials
5.3.2.2 Conductor type
5.3.2.3 Special conditions
5.3.2.4 Insulation
5.3.2.5 Identification
5.3.3 Earthing conductor size (cross-sectional area)
5.3.3.1 Protective earthing conductors
5.3.3.1.1 General
5.3.3.1.2 Selection
5.3.3.1.3 Calculation
5.3.3.2 Main earthing conductor
5.3.3.3 Aerial earthing conductors
5.3.3.4 Earthing conductors in cables, flexible cables or flexible cords
5.3.4 Main earthing terminal/connection or bar
5.3.5 MEN connection
5.3.5.1 General
5.3.5.2 Size
5.3.5.3 Identification
5.3.6 Earth electrodes
5.3.6.1 General
5.3.6.2 Types
5.3.6.3 Installation
5.3.6.4 Location
5.3.7 Functional earthing conductors
5.4 Earthing of equipment
5.4.1 General
5.4.1.1 Exposed conductive parts
5.4.1.2 Conductive building materials
5.4.1.3 Connection of electrical equipment to earth
5.4.2 Socket-outlets
5.4.3 Lighting points
5.4.4 Luminaires
5.4.5 Conductive supports for aerial conductors
5.4.6 Structural metalwork including conductive building materials
5.4.6.1 General
5.4.6.2 Connection to protective earthing conductors
5.4.7 Submersible pumps
5.4.8 Variable frequency devices
5.5 Earthing arrangements
5.5.1 Main earthing conductor
5.5.1.1 Arrangement
5.5.1.2 Connection to earth electrode
5.5.1.3 Labelling
5.5.1.4 Resistance
5.5.2 Protective earthing conductors
5.5.2.1 Arrangement
5.5.2.2 Restricted connections
5.5.2.2.1 Circuits
5.5.2.2.2 Earthing of equipment
5.5.2.2.3 Earthing facilities for distribution boards
5.5.3 Particular methods of earthing
5.5.3.1 Outbuildings
5.5.3.2 Wiring systems
5.5.3.3 Electrical equipment supplied by flexible cord or flexible cable
5.5.3.4 Switchboards
5.5.3.5 Unprotected consumer mains
5.5.4 Continuity
5.5.4.1 General
5.5.4.2 Conductive wiring enclosures
5.5.4.3 Conductive sheaths, armours and screens of cables
5.5.4.4 Connecting devices
5.5.5 Installation
5.5.5.1 General
5.5.5.2 Protection against mechanical damage
5.5.5.3 Protection against corrosion
5.5.5.4 Aerial earthing conductors
5.5.5.5 Buried earthing conductors
5.5.6 Connections
5.5.6.1 Conductors
5.5.6.2 Constructional components
5.6 Equipotential bonding
5.6.1 General
5.6.2 Arrangement
5.6.2.1 General
5.6.2.2 Conductive water piping
5.6.2.3 Other conductive piping systems
5.6.2.4 Conductive cable sheaths and conductive wiring enclosures
5.6.2.5 Showers and bathrooms
5.6.2.6 Swimming and spa pools
5.6.2.6.1 Bonding arrangement
5.6.2.6.2 Conductive pool structures
5.6.2.6.3 Pool equipotential bonding conductor connection point
5.6.2.6.4 Electrical equipment
5.6.2.6.5 Conductive fixtures and fittings
5.6.2.7 Telephone and telecommunication earthing systems
5.6.3 Bonding conductors
5.6.3.1 General
5.6.3.2 Size
5.7 Earth fault-loop impedance
5.7.1 General
5.7.2 Disconnection times
5.7.3 Earth fault-loop
5.7.4 Impedance
5.7.5 Supplementary equipotential bonding
5.8 Other earthing arrangements
6 Damp situations
6.1 General
6.1.1 Application
6.1.2 Selection and installation
6.2 Baths, showers and other fixed water containers
6.2.1 Scope
6.2.2 Classification of zones
6.2.2.1 Baths and showers
6.2.2.2 Other fixed water containers
6.2.3 Protection against electric shock—Prohibited measures
6.2.4 Selection and installation of electrical equipment
6.2.4.1 Degree of protection required
6.2.4.2 Socket-outlets
6.2.4.3 Switches and other accessories
6.2.4.4 Luminaires
6.2.4.5 Other electrical equipment
6.2.4.6 Switchboards
6.2.4.7 Electricity generation systems
6.3 Swimming pools, paddling pools and spa pools or tubs
6.3.1 Scope
6.3.2 Classification of zones
6.3.2.1 Swimming pools and paddling pools
6.3.2.2 Spa pools or tubs
6.3.2.2.1 General
6.3.2.2.2 Water capacity exceeding 5000 L
6.3.2.2.3 Water capacity not exceeding 5000 L
6.3.3 Protection against electric shock
6.3.3.1 Prohibited measures
6.3.3.2 Supplementary equipotential bonding
6.3.3.3 Voltage gradients
6.3.4 Selection and installation of electrical equipment
6.3.4.1 Degree of protection required
6.3.4.2 Wiring systems
6.3.4.3 Socket-outlets
6.3.4.4 Switches and other accessories
6.3.4.5 Luminaires, appliances and other electrical equipment
6.3.4.5.1 General
6.3.4.5.2 Zone 0 Luminaires
6.3.4.5.3 Zone 0 Appliances and other electrical equipment
6.3.4.5.4 Zone 1 Luminaires, appliances and other electrical equipment
6.3.4.5.5 Zone 2 Luminaires, appliances and other electrical equipment
6.3.4.6 Switchboards
6.3.4.7 Electricity generation systems
6.3.4.8 Electricity distributor’s electrical equipment
6.4 Fountains and water features
6.4.1 Scope
6.4.2 Classification of zones
6.4.3 Protection against electric shock
6.4.3.1 Use of SELV
6.4.3.2 Application of protective measures against electric shock
6.4.3.2.1 Supply
6.4.3.2.2 Prohibited measures
6.4.4 Selection and installation of electrical equipment
6.4.4.1 Degree of protection required
6.4.4.2 Wiring systems
6.4.4.3 Socket-outlets
6.4.4.4 Switches and other accessories
6.4.4.5 Luminaires, appliances and other electrical equipment
6.4.4.5.1 General
6.4.4.5.2 Zone 0 Luminaires
6.4.4.5.3 Zone 0 Appliances and other electrical equipment
6.4.4.5.4 Zone 1 Luminaires, appliances and other electrical equipment
6.4.4.6 Switchboards
6.4.4.7 Electricity generation systems
6.4.4.8 Electricity distributor’s electrical equipment
6.5 Saunas
6.5.1 Scope
6.5.2 Classification of zones
6.5.3 Protection against electric shock
6.5.3.1 Use of SELV
6.5.3.2 Prohibited measures
6.5.3.3 Additional protection by RCD
6.5.4 Selection and installation of electrical equipment
6.5.4.1 Degree of protection required
6.5.4.2 Requirements in classified zones
6.5.4.3 Wiring systems
6.5.4.4 Socket-outlets, switches and other accessories
6.5.4.5 Sauna heating appliances
6.5.4.6 Switchboards
6.6 Refrigeration rooms
6.6.1 Scope
6.6.2 Protection against electric shock
6.6.2.1 Use of SELV
6.6.2.2 Prohibited measures
6.6.3 Selection and installation of electrical equipment
6.6.3.1 Degree of protection required
6.6.3.2 Wiring systems
6.6.3.2.1 General
6.6.3.2.2 Types permitted
6.6.3.2.3 Sealing
6.6.3.3 Socket-outlets, switches and other accessories
6.6.3.4 Luminaires, lampholders and other equipment
6.6.3.4.1 Luminaires
6.6.3.4.2 Lampholders
6.6.3.5 Fixed appliances and motors
6.6.3.6 Heating elements in door seals
6.6.3.7 Switchboards
6.7 Sanitization and general hosing-down operations
6.7.1 Scope
6.7.2 Classification of zone
6.7.3 Protection against electric shock
6.7.3.1 Use of SELV
6.7.3.2 Prohibited measures
6.7.4 Selection and installation of electrical equipment
6.7.4.1 Degree of protection required
6.7.4.2 Electrical equipment
6.7.4.3 Switchboards
7 Special electrical installations
7.1 General
7.1.1 Application
7.1.2 Selection and installation
7.2 Safety services
7.2.1 Scope and general
7.2.1.1 Scope
7.2.1.2 General
7.2.2 Supply systems
7.2.2.1 General
7.2.2.2 Wiring systems (mains, submains, main switchboard and supplies to outbuildings)
7.2.2.2.1 WS classification provided
7.2.2.2.2 WS classification is not provided
7.2.2.3 Alternative supply systems
7.2.2.3.1 Continued occupation
7.2.2.3.2 Fire management system
7.2.3 Main switchboard and switchgear
7.2.3.1 General
7.2.3.2 Switchgear
7.2.3.3 Cables in the same enclosure
7.2.3.4 Arrangement
7.2.3.5 Discrimination (selectivity) of circuit-protective devices
7.2.4 Main switches
7.2.4.1 General
7.2.4.2 Arrangement of main switches
7.2.4.3 Mechanical protection
7.2.4.4 Identification
7.2.4.5 Electrical installations in outbuildings
7.2.4.6 Fire separated portions of a building
7.2.5 Fire pumps and fire pump control equipment
7.2.5.1 General
7.2.5.2 Wiring systems supplying fire pumps and fire pump control equipment
7.2.5.2.1 Types of wiring systems
7.2.5.2.2 Segregation of cables
7.2.5.3 Switchgear for fire pumps and fire pump control equipment
7.2.5.4 Interposing switches for fire pumps and fire pump control equipment
7.2.5.5 Pump rooms for fire pumps and fire pump control equipment
7.2.5.6 Fire-pump motors
7.2.5.6.1 Isolating switches for fire-pump motors
7.2.5.6.2 Overcurrent protection for fire-pump motors
7.2.5.6.3 Overtemperature protection for fire-pump motors
7.2.5.6.4 Control circuits for fire-pump motors
7.2.6 Fire and smoke detection equipment and fire alarm systems
7.2.6.1 General
7.2.6.2 Wiring systems for fire detection and alarm systems
7.2.6.2.1 Types of wiring systems for fire detection and alarm systems
7.2.6.2.2 Segregation of cables for fire detection and alarm systems
7.2.6.3 Interposing switches for fire detection and alarm systems
7.2.7 Air-handling systems
7.2.7.1 General
7.2.7.2 Wiring systems for air-handling systems
7.2.7.2.1 Types of wiring system for air-handling systems
7.2.7.2.2 Segregation of cables for air-handling systems
7.2.7.2.3 Interposing switches for air-handling systems
7.2.8 Evacuation equipment
7.2.8.1 General
7.2.8.2 Wiring systems for evacuation equipment
7.2.8.2.1 Types of wiring system for evacuation equipment
7.2.8.2.2 Segregation of cables for evacuation equipment
7.2.8.3 Interposing switches for evacuation equipment
7.2.9 Emergency lifts
7.2.9.1 General
7.2.9.1.1 In Australia
7.2.9.1.2 In New Zealand
7.2.9.2 Control and protection
7.2.9.3 Wiring systems for emergency lifts
7.2.9.3.1 Types of wiring system for emergency lifts
7.2.9.3.2 Segregation of cables
7.2.9.4 Interposing switches
7.2.9.5 Switchgear
7.2.10 Emergency motor-room-less lifts
7.2.10.1 General
7.2.10.2 Switchboards
7.2.10.3 Switchgear
7.2.10.4 Wiring systems
7.2.10.4.1 Types of wiring systems for MRL lifts
7.2.10.4.2 Segregation of cables
7.3 Electricity generation systems
7.3.1 General
7.3.2 Selection and installation of system
7.3.3 Control
7.3.3.1 Basic protection and fault protection
7.3.4 Isolation
7.3.4.1 General
7.3.4.2 Electricity generation systems incorporating batteries
7.3.5 Overcurrent protection
7.3.5.1 Electricity generation system protection
7.3.5.2 Circuit protection
7.3.5.2.1 General
7.3.5.2.2 RCDs
7.3.6 Earthing
7.3.7 Connected electrical equipment
7.3.8 Connection to electrical installation
7.3.8.1 Alternative supplies
7.3.8.1.1 General
7.3.8.1.2 Switching
7.3.8.2 Grid-connected inverter systems
7.3.8.2.1 General
7.3.8.2.2 Switching
7.3.8.2.3 Connection
7.3.8.3 Stand-alone power systems
7.3.8.3.1 General
7.3.8.3.2 Switching
7.3.8.3.3 Connection
7.4 Protection by electrical separation (isolated supply)
7.4.1 General
7.4.2 Source of supply
7.4.3 Arrangement of circuits
7.4.4 Switching devices
7.4.5 Supply to single item of electrical equipment
7.4.6 Supply to multiple items of electrical equipment
7.4.7 Variable speed drive (VSD) EMI filters
7.4.8 Testing
7.4.8.1 General
7.4.8.2 Single items of electrical equipment
7.4.8.3 Multiple items of electrical equipment
7.4.8.4 Bonding conductor continuity
7.5 Extra-low voltage electrical installations
7.5.1 Scope
7.5.2 Application
7.5.3 Sources of supply to SELV and PELV systems
7.5.4 Separation requirements for SELV and PELV circuits
7.5.5 Arrangement of SELV circuits
7.5.6 Arrangement of PELV circuits
7.5.7 Voltage drop in conductors
7.5.8 Control of an electrical installation
7.5.8.1 Main switches
7.5.8.2 Other switches
7.5.9 Overcurrent protection
7.5.9.1 General
7.5.9.2 Omission of overcurrent protection
7.5.10 Connecting devices
7.5.11 Wiring systems
7.5.11.1 General
7.5.11.2 Aerial conductors
7.5.11.3 Underground conductors
7.5.12 Testing
7.5.12.1 General
7.5.12.2 Protection by SELV
7.5.12.3 Protection by PELV
7.6 High voltage electrical installations
7.6.1 Scope
7.6.2 Application
7.6.2.1 In Australia
7.6.2.2 In New Zealand
7.6.3 Issues relevant to high voltage installations
7.7 Hazardous areas (explosive gas or combustible dusts)
7.7.1 Scope
7.7.2 Classification of hazardous areas
7.7.2.1 Responsibility for classification
7.7.2.2 Hazardous areas (AS/NZS 60079 series)
7.7.2.3 Reduction or elimination of the hazard
7.7.2.4 Electrical equipment
7.7.2.4.1 Selection
7.7.2.4.2 Installation
7.8 Standards for specific electrical installations
7.8.1 Scope
7.8.2 Standards containing requirements that are additional to, replace, or modify the general requirements of this Standard
7.8.2.1 Construction and demolition sites
7.8.2.2 Electromedical treatment areas
7.8.2.3 Transportable structures and vehicles including their site supplies
7.8.2.4 Marinas and recreational boats
7.8.2.5 Shows and carnivals
7.8.2.6 Telecommunication network power supplies
7.8.2.7 Cranes and hoists
7.8.2.8 Lifts
7.8.2.9 High voltage installations
7.8.2.10 Generating sets
7.8.2.11 Inverters
7.8.2.12 'Text deleted'
7.8.2.13 Stand-alone power systems
7.8.2.14 Photovoltaic (PV) arrays
7.8.2.15 Secondary battery systems
7.8.2.16 Mobile medical facilities
7.8.2.17 Floor and ceiling heating systems
7.8.2.18 Explosive atmospheres and hazardous areas
7.8.3 Standards containing guidance
7.8.3.1 Outdoor sites under heavy conditions
7.8.3.2 Electric fences
7.8.3.3 Emergency power for supply in hospitals
7.8.3.4 Lightning protection
7.8.3.5 Uninterruptible power systems (UPS)
7.8.3.6 Semiconductor power converters
7.8.3.7 Rotating electrical machines
7.8.3.8 Periodic verification
7.8.3.9 Verification guidelines
7.8.3.10 Film, video and television sites
7.9 Supplies for electric vehicles (NZ only)
7.9.1 Scope
7.9.2 Supply (NZ only)
7.9.2.1 Source of supply
7.9.2.2 Socket-outlets for Mode 1 charging
7.9.3 Domestic electrical installations (NZ only)
7.9.3.1 Facilities for other than Mode 1 charging
7.9.3.2 Facilities for Mode 2 charging
7.9.3.3 Facilities for Mode 3 and 4 charging
7.9.4 Other electrical installations (NZ only)
8 Verification
8.1 General
8.1.1 Application
8.1.2 General requirements
8.1.3 Periodic inspection and testing
8.2 Visual inspection
8.2.1 General
8.2.2 Checklist
8.3 Testing
8.3.1 General
8.3.2 Test methods
8.3.2.1 General
8.3.2.2 Recording of results
8.3.3 Mandatory tests
8.3.3.1 Low voltage
8.3.3.2 Extra-low voltage
8.3.3.3 Test failures
8.3.4 Sequence of tests
8.3.5 Continuity of the earthing system
8.3.5.1 General
8.3.5.2 Results
8.3.6 Insulation resistance
8.3.6.1 General
8.3.6.2 Method
8.3.6.3 Results
8.3.7 Polarity and correct circuit connections
8.3.7.1 General
8.3.7.2 Results
8.3.8 'Text deleted'
8.3.9 Verification of earth fault-loop impedance (EFLI)
8.3.9.1 Low voltage socket-outlet circuits
8.3.9.2 Methods
8.3.9.2.1 General
8.3.9.2.2 Supply available
8.3.9.2.3 No supply available
8.3.9.3 Results
8.3.10 Operation of RCDs
8.4 Verification records
Appendix A
Appendix B
B1 Scope
B2 Circuit arrangements
B3 Protection against overcurrent
B3.1 General
B3.2 Coordination between conductors and overload protective devices
B3.2.1 General
B3.2.2 Application
B3.2.2.1 General
B3.2.2.2 Protection by circuit-breakers
B3.2.2.3 Protection by fuses
B4 Protection by automatic disconnection of supply
B4.1 Application
B4.2 Principle
B4.3 Disconnection times
B4.4 The earth fault-loop
B4.5 Calculation of earth fault-loop impedance
B4.6 Earth fault-loop impedance measurement
B5 Maximum circuit lengths
B5.1 General
B5.2 Calculation of maximum length of circuit
B5.2.1 Determination of Zint
B5.2.2 Calculation method
B5.2.3 Guidance tables
B5.2.4 'Text deleted'
B5.2.5 Guidance table
Appendix C
C1 Scope
C2 Maximum demand
C2.1 After diversity maximum demand
C2.2 Calculation of maximum demand in consumer mains and submains
C2.3 Domestic installations
C2.3.1 Method
C2.3.2 Examples of calculation
C2.3.2.1 Example 1
C2.3.2.2 Example 2
C2.3.2.3 Example 3
C2.4 Non-domestic installations
C2.4.1 Method
C2.4.2 Examples of calculation
C2.4.2.1 Example 4
C2.4.2.2 Example 5
C2.4.3 Alternative calculation method for commercial and light-industrial applications
C2.4.3.1 General
C2.4.3.2 Example
C2.4.4 Alternative method using switchboard diversity
C2.5 Maximum demand in final subcircuits
C2.5.1 General
C2.5.2 Welding machines
C2.5.2.1 Definitions
C2.5.2.2 Arc welding machines
C2.5.2.3 Resistance welding machines
C2.5.3 Domestic cooking appliances
C2.5.4 Interlocked equipment
C3 Simplified protective device selection
C4 Simplified voltage drop
C4.1 Background
C4.2 Examples
C5 Number of points connected to circuits
C5.1 Number of circuits
C5.2 Final subcircuits
C6 Guide to maximum number of cables installed in conduits
C6.1 General
C6.2 Basis of calculations
C6.3 Application notes
Appendix D
D1 Application
D1.1 General
D1.2 Using the tables in this Appendix
D2 General requirements for posts and poles
D2.1 Sinking of posts/poles in ground
D2.2 Timber posts/poles
D2.3 Steel-pipe posts/poles
D3 Attachments to buildings or structures
D3.1 Responsibility for design
D3.2 Horizontal and vertical struts
D4 Example using the tables to determine pole/post or strut size
D4.1 Problem
D4.2 Solution
D4.2.1 Determine the minimum length of pole/post
D4.2.2 Select the minimum pole/post strength and size
Appendix E
E1 Scope
E2 Australia
E2.1 General
E2.2 Principles of classification
E2.2.1 General
E2.2.2 Classifications
E2.2.3 Multiple classification
E2.2.4 Parts with more than one classification
E2.3 Provisions in the NCC
E2.3.1 General
E2.3.2 Fire safety
E2.3.3 Safety (other than fire safety) health and amenity
E2.3.4 Sustainability—Energy efficiency
E3 New Zealand
E3.1 General
E3.2 Extent of electrical installations in the NZBC
E3.3 Building consents
Appendix F
F1 Surge protective devices (SPDs)
F1.1 General
F1.2 Selection and installation of SPDs
F1.2.1 Location
F1.2.2 Installation
F1.2.3 Selection of surge protection devices (SPDs)
F1.2.4 Overcurrent protective devices
F1.2.5 Connecting conductors
F2 Surge protective earthing and bonding
Appendix G
Appendix H
H1 General
H1.1 Classification
H1.2 Designation
H1.2.1 General
H1.2.2 Basic designation
H1.2.3 Single characteristic numeral designation
H1.3 First characteristic numeral
H1.4 Second characteristic numeral
H1.5 Supplementary letter W
H1.6 Supply and installation
H1.6.1 Components
H1.6.2 Instructions
H2 Particular wiring system applications
H2.1 Building Code
H2.2 Equipment installation Standards
H3 Fire-protected wiring systems
H4 Mechanically protected wiring systems
H4.1 General
H4.2 Application of wiring systems
H4.3 Unenclosed wiring systems
H4.4 Enclosed wiring systems
H5 Guide to mechanical protection classification
H5.1 General
H5.2 WSX1 mechanical protection systems
H5.3 WSX2 mechanical protection systems
H5.4 WSX3 mechanical protection systems
Appendix I
I1 Scope
I2 Protective device ratings
I3 Metric equivalent sizes for imperial conductors
Appendix J
Appendix K
K1 General
K1.1 Introduction
K1.2 Deemed to comply
K2 Switchboard standards
K2.1 General
K2.2 Withdrawal date of the AS/NZS 3439 series
K2.3 Testing
K3 Application of the AS/NZS 61439 series
K3.1 General rules
K3.2 Power switchgear and controlgear (PSC)
K3.3 Distribution boards intended to be operated by ordinary persons (DBO)
K4 Guidelines for the assessment of switchboards
K4.1 User template
K4.2 Items subject to agreement
K4.3 Design verification
K5 Corresponding provisions of this Standard and the AS/NZS 61439 series
K6 Particular clauses relevant to this Standard
K6.1 Degree of protection of ASSEMBLIES
K6.2 Form of internal separation
K6.3 Clearance
K6.4 Overvoltage category
K6.5 Creepage
K6.6 Earthing (protective earth circuit)
K6.7 Dielectric tests for protection against electric shock
K6.8 Current rating by testing and temperature limits
K6.9 Derivation of ratings for similar variants to AS/NZS 61439.1
K6.10 Verification assessment to AS/NZS 61439.1
K7 Short-circuit withstand strength
K7.1 General
K7.2 Ratings
K7.2.1 Short time withstand current rating (Icw)
K7.2.2 Backup (cascading)
K7.3 Short-circuit withstand strength by comparison to a reference design utilizing a check list
K8 Marking
K8.1 PSC and DBO switchboards
K8.2 Additional marking for DBO
K9 Other relevant characteristics to be declared by the ASSEMBLY manufacturer
K10 Device substitution
K10.1 General
K10.2 Device substitution questions
K11 Repairs to existing switchboards
K12 Routine verification by the switchboard manufacturer
Appendix L
Appendix M
M1 General
M1.1 Scope
M1.2 Active assisted living
M1.3 Homecare medical
M2 Arrangements
Appendix N
N1 General
N2 Marking of AS/NZS 2053 series and AS/NZS 61386 series conduits
N3 Classifications
Appendix O
O1 General
O2 Characteristics of AFDDs
O3 General requirements for AFDDs
O4 Location, selection and installation of AFDDs
O4.1 Location
O4.2 Selection of AFDDs
O4.3 Installation
O4.4 Overvoltage protection
Appendix P
P1 Scope and general
P1.1 Scope
P1.2 Applications
P1.3 Additional requirements and tests
P1.4 Exclusions
P1.5 Definitions
P1.5.1 Connecting point
P1.5.2 Mode 1 charging
P1.5.3 Mode 2 charging
P1.5.4 Mode 3 charging
P1.5.5 Mode 4 charging
P1.5.6 Demand factor
P1.5.7 Vehicle coupler
P1.5.8 Vehicle connector
P1.5.9 Vehicle inlet
P2 Maximum demand
P3 Installation
P3.1 General
P3.2 External Influences
P3.2.1 Water or high humidity
P3.2.2 Solid foreign bodies
P3.2.3 Mechanical damage
P4 Devices for protection against indirect contact by automatic disconnection of supply
P4.1 RCDs
P4.2 Devices for protection against overcurrent
P4.3 Protective conductors
P5 Other equipment
P5.1 Socket-outlets and vehicle connectors
P5.2 Ratings of vehicle couplers, socket-outlets and plugs
P5.2.1 Type 1 vehicle coupler
P5.2.2 Type 2 vehicle coupler, socket-outlet and plug
P5.2.3 Type 3 vehicle coupler
P5.2.4 Type 3 socket-outlet and plug
P5.3 Permitted socket-outlets or vehicle connectors
P5.4 Types of connection
P5.4.1 Case A connection
P5.4.2 Case B connection
P5.4.3 Case C connection
P6 Charging stations and cables
P7 Periodic verification
Appendix Q
Q1 Scope
Q2 General
Q3 Arc suppression
Q4 Switchgear types
Q4.1 Polarized
Q4.2 Non-polarized type
Q5 D.C. Ratings
Q5.1 General
Q5.2 Earthed D.C. supply
Q6 Provision of isolation and overcurrent protection
Q7 Switchboard locations
Q8 Final subcircuit wiring and fittings
Q9 Inverters
Amendment control sheet
AS/NZS 3000:2018
Amendment No. 1 (2020)
Revised text
Amendment No. 2 (2021)
Revised text
Amendment No. 3 (2023)
Revised text
Index
Cited references in this standard
[Current]
Approval and test specification — Electrical portable outlet devices
[Current]
Approval and test specification — Socket-outlet adaptors
[Current]
Approval and test specification — Cord extension sets
[Current]
Electrical installations — Selection of cables, Part 1.2: Cables for alternating voltages up to and including 0.6/1 kV — Typical New Zealand conditions
[Current]
Electrical installations — Emergency power supplies in hospitals
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