This workshop aims to familiarise the participants with the requirements laid down in the standard AS/NZS 3000:2007, commonly known as Australia-New Zealand Wiring Rules. For those installations covered in the scope of this standard, its provisions are mandatory and must be followed. Any engineer involved in planning and design of electrical systems, their installation or maintenance must have a clear idea about the various requirements contained in the standard. The primary purpose of this standard, like many of its various other equivalent national standards, is to ensure the safety of personnel against the dangers arising from the use and handling of electrical equipment and appliances. The introductory modules of this workshop outline the basic principles that should be understood for a better appreciation of the standard. These include modules, which illustrate the calculation for the power demand of a system and the computation of earth fault current as discussed in the appendices of the standard, which are informative in nature but yet are very important in making an electrical system safe for operation. The actual provisions of the standard are then discussed in detail in the subsequent modules. MORE INFORMATION: http://www.idc-online.com/content/practical-electrical-wiring-standards-asnzs-30002007

1. Practical Electrical Wiring Standards
- AS 3000:2007
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2. What is in the course?
• Course contents
• Background and importance of the standards and
regulations
• AS/NZS 3000 preface
• Objectives of AS/NZS 3000
• Contents of AS/NZS 3000 and main features
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3. Total workshop outline
• Fundamentals of electrical distribution systems
• Common risks and hazards associated with Electricity use
• Safety norms and considerations to prevent and avoid such common
hazards
• Basic requirements of AS/NZS:3000-2007 Wiring Rules
• Contents and stipulations of AS/NZS 3000 to ensure safe and reliable
electrical installations
• Simple procedures / calculations as per AS/NZS 3000 related to main
and earthing conductor sizes, maximum demand, voltage drops, etc.
• Mandatory checks and tests on an installation prior to energisation as
per the standard.
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4. Need for the regulations
• Homogeneous regulations ensure availability of consumer items
and their easy replacements or interchanges as and when needed,
with minimum constraints.
• Helps in selection of correct and matching devices satisfying the
expected performance needs.
• Ensure consistent quality and performance reliability for the
equipments and installations.
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5. Main objective of AS/NZS 3000
• To define minimum requirements to be
followed for the design, construction and
testing of electrical equipment and
installation in a safe manner so as to
protect persons, livestock and property
from electric shock, fire and physical
injury hazards that may arise from the
installation.
• Above objective is valid for new
installations as well as for modifications/
additions to the existing ones
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6. How AS/NZS 3000 ensures safety?
By providing:
• Stipulations and practices to be followed for protection against risks
and consequent hazards
• Requirements to be met by the system, equipments, accessories and
installation to meet these stipulations and practices
• Mandatory verification and testing to ensure installation and
equipments comply with the stipulated safety norms
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7. Application areas
• Electrical installations in all types of premises and land used by
electricity consumers.
• Reference for requirements relating to electrical installations in
matters such as
– Safety of workplaces. (Occupational Health and Safety legislation
and associated codes).
– Safe design/construction of buildings (like Building Code of
Australia, New Zealand Building Code)
– Electricity generation, T & D systems.
– Safe connection to electricity distribution systems.
– Qualifications of electricity workers.
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8. AS3000:2007 edition
• Approved on behalf of the Council of Standards Australia and
New Zealand and published on 12th November 2007.
• Increased illustration diagrams on concepts and stipulations
including additional practical examples based on feedback from
2000 edition users.
• Two parts with Part 1 (Section 1) covering Scope, application and
fundamental principles and is generally complete in itself to avoid
cross-referencing to Part 2 (Sections 2-8).
• Establish the ‘deemed to comply’ status of AS/NZS 3018 relating
to simple domestic applications
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9. Some Important Changes
• Illustration of normal and alternative location of over current devices
and its omission as well.
• Single main switch (per tariff) for a single domestic installation.
• Arc fault protection MUST for all switchboards with a nominal
supply rated above 800 A
• Use of residual current devices (RCDs) to all socket outlet and
lighting circuits up to 20 A
• Maximum three circuits connected to any one RCD.
• Voltage drop of up to 7% where a substation is located within the
premises.
• Inclusion of additional appendices
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10. AS3000:2007 contents
• Part-1 aligned with IEC 60364 for essential safety.
• Part-2 (Sections 2 to 8) stipulates practices to be followed in
the systems to achieve safety
• Failure to comply with a work method provision in Part 2
would breach high level safety conditions of Part 1
• Alternative mechanism to Part-2 stipulations is acceptable
subject to satisfying the objectives of Part -1.
• Testing and inspection provisions updated and aligned with
AS/NZS 3017, including provisions for periodic inspection in
accordance with AS/NZS 3019.
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11. Section 1:
Scope, application and fundamental principles
• Definitions for various electrical terms
• Protection requirements to minimize hazards
• Principles of protection
• Basic requirements for design and installation of electrical
systems
• Requirements for new installations
• Requirements for additions and modifications to an existing
installation
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12. Section 2 –
General arrangement, control and protection
• Switchgear and controlgear arrangements for protection against
hazards.
• Control of the electrical installation (or parts thereof) by suitable
switching arrangements.
• Protection against fault conditions.
• Coordination of protective devices
• Design, selection and installation of switch boards.
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13. Section 3 –
Selection and installation of wiring system
• Protection against external influences and environmental conditions
• Steps to avoid mutual detrimental influences among multiple
conductors
• Requirements to meet current-carrying capacity, voltage drop, etc
• Practices for connections, joints and terminations to improve
reliability
• Identification for safety and maintenance
• Fire protective measures
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14. Section 4 –
Selection and Installation of appliances and accessories
• Installation requirements of motors, transformers, Capacitors, heating
systems, lighting systems, UPS and standby sources, etc. to ensure
– protection against physical injury.
– protection from thermal effects.
– Safe and reliable circuit connection
– proper isolation and switching under abnormal conditions
– Protective devices and their features
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15. Section 5 –
Earthing arrangements & earthing conductors
• Protective and functional earthing
• Recommended earthing resistance values
• Mechanical protection appropriate to the assessed conditions of
external influence
• Sizing and selection of earthing electrodes and conductors.
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16. Section 6 –
Damp situations
• Safety concerns in damp areas
• Area classifications in bath rooms, showers, pools, fountains,
saunas, etc based on level of safety needed.
• Selection and Installation practices for Electrical equipment in
classified areas to achieve the desired level of safety
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17. Section 7 –
Special Electrical installations
• Safety services
• Electricity generation systems.
• Electrical separation systems.
• Extra-low voltage electrical installations.
• High voltage electrical installations.
• Explosive / Hazardous areas.
• Miscellaneous installations like Construction/ demolition sites,
medical treatment areas, cranes/hoists, lifts, generating sets,
carnivals, telecom network power supplies, etc
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18. Section 8 –
Verification
• Minimum inspection and test procedures to check compliance of an
installation to AS/NZS 3000 wiring rules before putting into service
covering
– Inspection checklists.
– Mandatory tests
– Sequence of tests before/ after energisation
– Recommended results for acceptance
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19. DO YOU WANT TO KNOW MORE?
If you are interested in further training or information,
please visit:
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