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Electrical Distribution System Installation Connection and Inspection
TS 11000: 2013
Safety standard
Version 1.0 Issued Date: 23 December 2013 Effective Date: 23 December 2013
Important Warning
This document is one of a set of standards developed solely and specifically for use on the rail network owned or managed by the NSW Government and its agencies. It is not suitable for any other purpose. You must not use or adapt it or rely upon it in any way unless you are authorised in writing to do so by a relevant NSW Government agency.
If this document forms part of a contract with, or is a condition of approval by, a NSW Government agency, use of the document is subject to the terms of the contract or approval.
This document may not be current. Current standards are available for download from the Asset Standards Authority website at www.asa.transport.nsw.gov.au.
© State of NSW through Transport for NSW Page 1 of 28
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Standard Approval Owner: D Spiteri, Chief Engineer, Rail, Asset Standards Authority Authorised by: G Bradshaw, Principal Manager, Network Standards and Services Approved by: J Modrouvanos, Director Asset Standards Authority on behalf of the ASA
Configuration Control Board
Document Control Version Summary of Change 1.0 First issue
For queries regarding this document
www.asa.transport.nsw.gov.au
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Preface
The Asset Standards Authority (ASA) develops, controls, maintains, and publishes standards
and documentation for transport assets for New South Wales, using expertise from the
engineering functions of the ASA and industry.
The Asset Standards Authority publications include the network and asset standards for NSW
Rail Assets.
This document has been developed by the Chief Engineer Rail section of the Asset Standards
Authority, reviewed by a committee of TfNSW cluster representatives, and approved by the
Asset Standards Authority Configuration Control Committee.
This document details the requirements for connection of installations, or installations proposed
to be connected to, the RailCorp distribution system
The document complies with the requirements of the Electricity Supply (Safety and Network
Management) Regulation 2008 and the Service and Installation Rules for NSW August 2012. It
cancels and replaces RailCorp Standard EP 17 00 00 06 SP Installation Inspections.
This document is to be read in conjunction with Transport Standard EP 95 00 30 03 SP
RailCorp Network Management Plan Chapter 2 – Customer Installation Safety and
EP 17 00 00 12 SP Demarcation of RailCorp Low Voltage Distribution System.
The significant changes include:
responsibilities within the Transport Cluster
electricity supply relationships
responsibilities of Installation owners or custodians
Distribution Network Service Provider (DNSP) responsibilities
applications for connection
Certificate of Compliance - Electrical Work
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Foreword
In developing this document there are sections relating to internal procedures and forms
associated with the Distribution Network Service Provider (DNSP) that have been carried
forward from the previous RailCorp standard.
The document includes those internal procedures and forms and is published on behalf of the
DNSP on the ASA website. This has been done to ensure that relevant requirements are not
lost. In future editions it is envisaged that some or all of these will be incorporated into internal
DNSP documents.
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Table of contents
1. Introduction .......................................................................................................................................6
2. Purpose ..............................................................................................................................................6
2.1 Scope..................................................................................................................................................6 2.2 Application.........................................................................................................................................6
3. Reference documents.......................................................................................................................7
4. Terms and definitions.......................................................................................................................8
5. Organisational responsibilities......................................................................................................10
6. Electricity supplies..........................................................................................................................11
6.1 Relationship of this document to legislation and the customer installation safety plan ...................................................................................................................................................11
6.2 Accredited service providers.........................................................................................................11
7. Installation owner or custodian responsibilities .........................................................................11
7.1 Safety of installation .......................................................................................................................12 7.2 Qualified electricians ......................................................................................................................12
8. Distribution network service provider responsibilities...............................................................12
9. Applying for connection of a new installation or an alteration to an existinginstallation .......................................................................................................................................12
9.1 Process ............................................................................................................................................13 9.2 Small scale renewable energy micro generation systems .........................................................13
10. Notification of electrical works ......................................................................................................13
10.1 Local DNSP connection..................................................................................................................15 10.2 Tests required..................................................................................................................................15 10.3 Installations not to be connected ..................................................................................................15
11. Inspections ......................................................................................................................................16
11.1 Work requiring inspection..............................................................................................................16 11.2 Electrical Testing Methodology .....................................................................................................17 11.3 Defects .............................................................................................................................................18 11.4 Inspection reports ...........................................................................................................................19 11.5 Disciplinary action ..........................................................................................................................19 11.6 Qualifications of installation inspectors.......................................................................................20
12. Audit inspections ............................................................................................................................21
13. Forms ...............................................................................................................................................21
Appendix A Discretionary inspections flowchart .......................................................................................22
Appendix B Installation inspection flowchart .............................................................................................23
Appendix C Visual inspection check list......................................................................................................24
Appendix D Guidelines for completing defect forms .................................................................................26
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1. Introduction
Each Distribution Network Service Provider (DNSP) has a legislative responsibility to ensure
that installations connected to its distribution system are safe and do not pose a risk to life,
health, or property. This is to protect the consumer and also to protect the DNSP so that its
system reliability is not jeopardised by unauthorised or faulty installations.
2. Purpose
This document details the requirements for connection of installations, or installations proposed
to be connected to, the RailCorp distribution system.
2.1 Scope
This standard provides the requirements for the following aspects of installations and
inspections:
the application process for connection of a new installation or alteration to an existing
installation; commonly called the 'Application for Connection'
the notification process for the self test regime of electrical works; commonly called the
'Certificate of Compliance - Electrical Works'
the Distribution Network Service Provider inspection and testing regime
2.2 Application
This document applies to the following:
all installations connected or proposed to be connected to the RailCorp distribution
system
all installations connected or proposed to be connected to the Local Distribution Network
Service Provider system via an isolating transformer.
This document does not apply to high voltage installations, the 1500 V dc railway traction
system or the railway signalling system.
This document applies to all installation owners or custodians and their electrical contractors, all
Transport for NSW, Sydney Trains, NSW Trains or other rail transport entity employees.
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3. Reference documents
Legislation
NSW Electricity Supply Act 1995
Electricity Supply (General) Regulation 2001
Electricity Supply (Safety and Network Management) Regulation 2008
Electricity (Consumer Safety) Act 2004
Electricity (Consumer Safety) Regulation 2006
NSW Department of Trade and Investment
Code of Practice – Electricity Service and Installation Rules of New South Wales 2007
Code of Practice – Distribution Risk Management 1998
Service and Installation Rules of New South Wales 2012
NSW Department of Energy and Water Code of Practice – Installation Safety Management
1997, Appendix 2
Electricity Association of NSW Guide to The Training of Personnel Working on or Near
Electricity Works 1999
Australian standards
AS/NZS 3000 – Wiring Rules
AS/NZS 3017 – Electrical Installations – Testing and Inspection Guidelines
Transport standards
EP 12 00 00 02 SP - Low Voltage Distribution and Installations Earthing References and
Definitions
EP 12 10 00 10 SP - System Substation Earthing
EP 12 10 00 11 SP - Distribution Substation Earthing
EP 12 10 00 20 SP - Low Voltage Distribution Earthing
EP 12 10 00 21 SP - Low Voltage Installations Earthing
EP 17 00 00 12 SP – Demarcation of RailCorp Low Voltage Distribution System
EP 95 00 30 03 SP RailCorp Network Management Plan Chapter 2 - Customer Installation
Safety
ESB E001 – Low Voltage Electrical Standards
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4. Terms and definitions
application for connection a document submitted to the DNSP requesting approval to connect
a new installation or change the loading of an existing installation
authorised electrician a person who is authorised under the Home Building Act 1989 to do
electrical wiring work
CCEW Certificate of Compliance - Electrical Works
custodian the person that has responsibility for an installation.
DNSP distribution network service provider
distribution network service provider a person who owns or controls a distribution system
distribution system the electricity power lines and associated equipment and electricity
structures that are used to convey and control the conveyance of electricity to the premises of
wholesale and retail customers, or to convey and control the conveyance of electricity to, from
and along the rail system. A distribution system does not include a transmission system.
EDA Electrical Distribution Authority. The name of the business unit accountable for the rail
transport DNSP responsibilities. The EDA currently resides in Sydney Trains.
electrical installation the electrical wiring and associated equipment that are used to convey
and control the conveyance of electricity within premises to which electricity is supplied from a
distribution system, but does not include anything connected to and extending or situated
beyond an electrical outlet socket
electrical installation work means the work of installing, adding to, altering, disconnecting,
reconnecting or replacing an electrical installation
LDNSP local distribution network service provider
Local Distribution Network Service Provider the organisation which owns and controls the
principal distribution system in the geographical distribution area in which the installation is
located. The geographical areas of the LDNSP's are defined in the Service and Installation
Rules of NSW
low voltage a voltage exceeding 32V ac or 115V dc but not exceeding 1000V ac or 1500V dc
LV low voltage
high voltage a voltage exceeding 1000V ac or 1500V dc
HV high voltage
isolating transformer: A transformer with protective separation between the input and output
windings. It is used to separate the earthing systems between the RailCorp distribution system
and the Local Distribution Network Service Provider.
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Qualified Electrician see authorised electrician
switchboard an assembly of circuit protective devices, with or without switchgear, instruments
or connecting devices, suitably arranged and mounted for distribution to, and protection of, one
or more submains or final subcircuits or a combination of both.
switchboard, main a switchboard from which the supply to the whole electrical installation can
be controlled
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5. Organisational responsibilities
Rail Corporation New South Wales (RailCorp) is the holding and property management
company for major rail and rail property assets in the Sydney Metropolitan Rail Area.
Consequently the railway electrical distribution system is the 'RailCorp Distribution System'.
The RailCorp Distribution System is generally located within the Sydney Metropolitan Rail Area,
bounded by the geographical extremities as follows:
Hamilton in the North,
Kiama in the South,
Wallerawang in the West (Bowenfels is the extent of the 1500V DC system), and
Glenlee (Campbelltown) in the South West.
Electrical Distribution Authority (EDA) within Sydney Trains is the Distribution Network Service
Provider (DNSP) for all installations covered by the application of this standard within the
Sydney Metropolitan Rail Area.
The Service and Installation Rules of NSW nominates RailCorp as
the DNSP and will be updated to Sydney Trains with the next
edition.
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The Asset Standards Authority (ASA) publishes the Standards applicable to the RailCorp
Distribution System including installations
The Local Distribution Network Service Providers (LDNSPs) are Ausgrid, Endeavour Energy
and Essential Energy.
6. Electricity supplies
Electricity supplies to installations within the Sydney Metropolitan Rail Area are either derived
directly from the RailCorp high voltage (HV) distribution network or from the Local Distribution
Network Service Provider via an isolating transformer. This isolating transformer forms part of
the RailCorp low voltage (LV) distribution network. In these situations the EDA becomes the
DNSP from the secondary terminals of the isolating transformer.
The demarcation of supplies is documented in EP 17 00 00 12 SP “Demarcation of RailCorp
Low Voltage Distribution System”
6.1 Relationship of this document to legislation and the customer installation safety plan
The Electricity Supply (Safety and Network Management) Regulation requires Distribution
DNSPs to have plans in place to manage specific aspects of their distribution systems. One of
the requirements is the management of customer installation safety.
The Customer Installation Safety Plan is document EP 95 00 30 03 SP RailCorp Network
Management Plan Chapter 2 - Customer Installation Safety and governs all installations within
the electrified rail corridor. This plan addresses the specific rail requirements associated with
installations, including requirements detailed in the Service and Installation Rules of NSW.
6.2 Accredited service providers
The Customer Installation Safety Plan does not include an accreditation system for contestable
works on the RailCorp distribution system.
Connections to the network can only be carried out either by or under the direction of
DNSP-authorised staff.
7. Installation owner or custodian responsibilities
Installation owners or custodians are responsible for the following:
safety of installations
ensuring that electrical works are performed by qualified electricians
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7.1 Safety of installation
Installation owners or custodians are responsible for the maintenance of their installations to
ensure the safety of persons and property and the prevention of bushfires.
7.2 Qualified electricians
To carry out electrical works on installations, electrical contractors must be fully licensed in
accordance with the Home Building Act.
The licenses are administered by the Office of Fair Trading NSW.
Installation owners or custodians are responsible for ensuring that any contractor or trades
person they engage to carry out electrical works are appropriately licensed. In the case of
project works the custodian is deemed to be the Project Manager.
8. Distribution network service provider responsibilities
The Distribution Network Service Provider (DNSP) is responsible for the following:
managing applications for connections and associated network loadings
monitoring the standard of electrical work
confirming that appropriate testing procedures have been implemented by the installing
electrical contractor
To achieve its responsibilities, the DNSP has an inspection program to monitor the performance
of electrical contractors.
Related topic:
Inspections, Section 11.
9. Applying for connection of a new installation or an alteration to an existing installation
Submitting a completed Application for Connection form is a mandatory requirement for all new
connections or connection alterations. The electrical contractors or installers acting on the
installation owner or custodian's behalf shall complete the standard Application for Connection
form. For project work this may be done by the Authorised Engineering Organisation (AEO)
designer as part of the design deliverables.
Where a temporary connection is required for a short time and at the conclusion of that time no
connection will be needed, eg for construction of a bridge, then the Application for a Temporary
Connection form shall be used.
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Related topic:
Forms, Section 13
9.1 Process
Applications are to be submitted in accordance with the details embedded on the Application for
Connection form.
The relevant installation inspector, or their representative, will determine if the associated
substation and the supply main switchboard have the capacity to supply any additional load
required.
For alterations to existing installations, it is the responsibility of the installing electrical contractor
or Authorised Engineering Organisation (AEO) designer to determine if the installation has the
capacity to accept additional load and to design the installation accordingly. The installation
owner or custodian shall be consulted and approve any increased electrical load.
For services originating from a LDNSP the Application for Connection form shall be submitted to
the LDNSP with a copy to the DNSP.
Related topic:
Forms, Section 13
9.2 Small scale renewable energy micro generation systems
Small scale renewable energy micro generation systems include solar, wind and biomass.
These systems shall only be connected to the network via an inverter that complies with
AS4777 –Grid connection of energy systems via inverters and has a capacity no more than
10kW for single phase connections or 30kW for three phase connections.
The installing electrical contractor or Authorised Engineering Organisation (AEO) designer shall
demonstrate that the design satisfies the criteria as specified in the Service and Installation
Rules of NSW Clause 8.6.3 prior to approval.
10. Notification of electrical works
All electrical installation work shall be tested to verify compliance with AS/NZS 3000, the
Service and Installation Rules of NSW, and relevant standards, before being permanently
connected to the supply.
Compliance is the responsibility of the installing electrical contractor.
The current Fair Trading NSW Certificate of Compliance Electrical Work (CCEW) form shall be
used by electrical contractors for notifying the Distribution Network Service Provider (DNSP) of
electrical installation work as required by the Electricity (Consumer Safety) Regulation 2006.
Supplies of Compliance Certificates can be obtained from electrical wholesalers.
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The NSW Electricity (Consumer Safety) Regulation obligates electrical contractors to provide a
completed CCEW form to installation owners or custodians and the DNSP covering the details
of their electrical installation work, the required test results, and who carried out the work.
The Certificate of Compliance Electrical Work is to be submitted to
the DNSP for all electrical work carried out on an installation
contrary to note 1 in the Guide to the Testing, Connection and
Notification Requirements for the Certificate of Compliance
Electrical Work.
A CCEW form shall be submitted to the DNSP within 14 days after the completion of any safety
and compliance tests.
A separate CCEW is required to be submitted to the DNSP after correcting any notified defect in
an installation.
All CCEW forms shall be completed in full, with particular attention to the following details:
clear identification of the customer’s address and contact number
clear identification of the repairs carried out or load to be connected
actual test values for the earthing system integrity and insulation resistance for the 'Test
Report' section
legible signature and license details entered by the electrical contractor for the
certification section
If the CCEW form has not been clearly or correctly completed then the Installation Inspector will
return the form to the person submitting it, advising them that a new or suitably corrected CCEW
form must be resubmitted within five working days. Failure to comply with these requirements
shall initiate disciplinary action.
In the case of work that is discovered other than by way of a CCEW form, the Installation
Inspector shall inform the installation owner or custodian that the work has not been notified and
that a CCEW must be submitted.
In the event of the installation being a RailCorp Asset then the installation inspector is to report
to the Line Manager responsible for the premises or their representatives, in accordance with
the DNSP Safety Management process.
Related topics:
Disciplinary action, Section 11.5
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10.1 Local DNSP connection
For new connections to a Local Distribution Network Service Provider (LDNSP) a Certificate of
Compliance Electrical Work (CCEW) shall be submitted to the LDNSP concerning the
connection to their network at the completion of the works. Simultaneously, the CCEW
concerning the installation connected to the isolating transformer shall be submitted to the
DNSP.
For alterations or additions to existing connections the CCEW shall be submitted to the DNSP.
10.2 Tests required
All electrical installation work shall be tested to verify compliance with AS/NZS 3000, the
Service and Installation Rules of NSW and relevant standards, before being permanently
connected to the supply.
The minimum inspection shall include testing the work in accordance with the requirements of
the NSW Department of Energy and Water Code of Practice – Installation Safety Management,
Appendix 2.
The test methods shall adhere to the Electrical Installation Testing Guidelines offered in
AS/NZS 3017, and use calibrated instruments which are periodically checked to ensure they
remain operational and safe.
Test results shall ensure all the outcomes specified in Clause 1.8 of AS/NZS 3000 are
established.
10.3 Installations not to be connected
Installation work can only be connected to the electricity supply once testing and inspection
activities prove compliance with the following standards and codes of practice:
AS/NZS 3000 and supporting standards
Service and Installation Rules of NSW
Transport Standards
For the following installation work, connection to the electricity supply can only be carried out by
an individual who has been, or is supervised by a person, appropriately authorised by the DNSP
and possesses formal training with respect to the task undertaken:
consumers mains and main switchboard, or
installations in environments classified as hazardous areas by relevant Australian
Standards including AS/NZS 2381 Section 1.
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11. Inspections
The Distribution Network Service Provider (DNSP) shall carry out inspections of selected new
installations and additions and alterations to existing installations for compliance with the
relevant codes, regulations and standards.
The inspection shall consist of a visual examination to check compliance with the rules, the level
of technical expertise for finish of the work, and includes sufficient testing to verify that the
electrical contractor has performed the appropriate tests.
The inspection shall include a thorough visual check of the earthing system to ensure that it
meets dc traction system special requirements.
All inspections will be carried out within three months of receipt of notification of electrical works.
Related topic:
Installation inspection flowchart; Appendix B
Visual inspection check list; Appendix C
11.1 Work requiring inspection
New installations, additions and alterations to installations are subject to mandatory and
discretionary inspections.
The inspection of additions and alterations is limited to that portion of the installation set out in
the Certificate of Compliance Electrical Work (CCEW), unless during the installation it is obvious
that portions of the existing installation are defective and immediately dangerous.
Installations requiring a mandatory inspection shall not be placed in service until a complete
installation inspection has been performed.
Where an installation is found to have been energised by an unauthorised contractor prior to
inspection, it shall be inspected and the matter referred to the Manager EDA.
If the installation is found to be immediately dangerous, the defective portion is to be
disconnected from the supply and danger tagged out of service. A defect notice is then to be
issued.
All work that has been found to be defective must be reinspected.
Installation inspections are separate to the 'self test' which must be
carried out after every job in accordance with Clause 33 of the
Electricity (Consumer Safety) Regulation 2006.
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11.1.1 Mandatory inspections
Clause 3.8 of the NSW Department of Water & Energy Code of Practice – "Installation Safety
Management" states the following installation work, as applicable to this Standard, must be
inspected:
consumers mains and main switchboards
installations in environments classified as hazardous areas by AS/NZS 2381 Section 1
All other installation work shall be inspected on a discretionary basis.
Related topic:
Discretionary inspections, Section 11.1.2
11.1.2 Discretionary inspections
The Distribution Network Service Provider will carry out discretionary inspections of selected
installations based upon the following broad criteria:
the type of installation work involved
whether the work is major or minor job
location; whether the works are accessible to the public
risk profile
the electrician’s previous performance in that particular type of work
Inspection requirements, in terms of percentage of work to be inspected, will be periodically
reviewed as the familiarity of installing contractors in the market changes, in particular with
demonstrated knowledge of transport standards.
Related topic
Discretionary inspections flowchart; Appendix A
11.1.3 Progress Inspections
Where any part of the electrical installation will be concealed such as underground or behind a
lined wall, then it may be appropriate for progress inspections to be carried out during the
installation. Such inspections may be initiated locally and without receipt of formal notification
from the electrical contractor.
11.2 Electrical Testing Methodology
AS/NZS 3017:2007 and AS/NZS 3000:2007 Section 6, provides guidelines for testing of
electrical installations.
The procedures for carrying out the electrical tests that form part of an installation inspection are
set out in the DNSP procedures
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11.3 Defects
Work that does not comply with AS/NZS 3000, the Service & Installation Rules of NSW and
transport standards shall be considered to be defective.
All defective work shall be notified to the customer and to the installing contractor.
Three copies of any notification shall be produced:
customer's copy
installing contractor's copy
DNSP copy, which is held by the DNSP installation inspector
Each notification is to be uniquely numbered.
All defect correction work is required to be re-inspected.
Related topic:
Guidelines for completing defect forms; Appendix D
11.3.1 Major defects
Major defects are those considered to present a high risk safety hazard to life, health or
property. Electrical installation work containing major defects shall not be connected to the
network. Major defects are listed in the NSW Department of Water & Energy Code of Practice -
Installation Safety Management, Appendix 3.
If major defects are encountered during an inspection, the installation inspector shall isolate the
section of the installation containing the major defect if possible. If this is not possible the entire
electricity supply to the installation may need to be disconnected.
If any part of the electrical installation is disconnected it shall be suitably tagged with a warning
not to connect and the nature of the defect.
If the disconnection of a defective installation will result in subsequent hazards or the installation
is considered system critical then the defect must be rectified immediately. For example, station
lighting defects or the Rail Management Centre. The installation owner or custodian is also to
be notified immediately.
11.3.2 Minor defects
Minor defects are defects that are not considered to be major defects.
For minor defects, a period of 21 days grace is allowed for the defects to be rectified. If it is not
rectified within this period a 'final notice' is to be forwarded to the installation owner or custodian.
If it is still not rectified within 14 days of the date of the final notice then the matter is to be
discussed with the installation owner or custodian before disconnecting supply.
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11.3.3 Re-inspection
Work will not to be re-inspected until a notification that the work is ready for re-inspection has
been received by the DNSP. Notification is via a new Certificate of Compliance Electrical Work
(CCEW) form.
The DNSP will have a follow up system to ensure CCEW forms for reinspection are received.
Costs associated with reinspection will be charged to the installing electrical contractor.
11.3.4 Defects in other parts of the installation
If during an inspection of a consumers’ installation other parts of the installation not indicated on
the CCEW form is found to be dangerous, or is likely to become dangerous, then the installation
inspector is to report the defect in accordance with the DNSP procedures.
The inspector shall list the identified defects and address a hazard report to the installation
owner or custodian responsible for the premises, or their representative, in accordance with the
DNSP Safety Action Management process.
If the supply to the installation is not disconnected at the time of inspection, then the hazard
report shall include the period within which the installation is to be made safe or otherwise
supply will be disconnected.
The installation shall be re-inspected after that period has expired to ensure that the installation
has been made safe.
11.4 Inspection reports
Results of inspections shall be recorded.
Inspections records shall be maintained for a minimum of seven years.
11.5 Disciplinary action
If a person breaches any law applicable to the provision of electricity supply, electrical safety or
electrical installation work, the DNSP may report that person to the appropriate authority or take
legal action itself. The action taken will depend on the seriousness of the breach, or the
frequency of breaches. The DNSP may also disconnect the installation from the network.
Breaches occur where a person or contractor:
carries out installation work that is defective or unsafe
fails to carry out the required tests
fails to notify the DNSP after carrying out electrical installation work
deceives or attempts to deceive any of the DNSP employees as to any fact, matter or
thing relating to an electrical installation
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makes a representation in any document in relation to any electrical installation, which
they have supplied, that is false or misleading
connects an electrical installation to the RailCorp network without the DNSP approval
fails to rectify defects when notified
Disciplinary action may include
issuing a verbal or written warning
issuing a formal interview or counselling
referring an electrical contractor to the Office of Fair Trading
referring to the Commercial Tribunal
11.6 Qualifications of installation inspectors
DNSP personnel that assume an installation inspector role as part of their daily activities shall
be qualified according to the type of installation. Types of installations include:
low voltage installations
consumers' aerial lines
11.6.1 Low voltage installations
Inspectors of low voltage installations shall meet the following requirements:
hold a supervisor certificate (electrician) or a contractor licence (electrical) issued by the
Office of Fair Trading or approved equivalent which entitles them to work without
supervision
have demonstrated the necessary knowledge of transport standards and testing
requirements
hold a current Rail Industry Safety Induction card
have a minimum of five years experience working as a qualified electrician
11.6.2 Consumer aerial line
Inspectors of consumer aerial line installations shall meet the following requirements:
be qualified and have met the requirements of the Electricity Association of NSW Guide
to The Training of Personnel Working on or Near Electricity Works to inspect and test
overhead lines
have the necessary knowledge and experience, in particular of transport standards to
undertake the inspection of the particular type of work to be inspected
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11.6.3 Installations located within hazardous areas inspector qualifications
For installations located within hazardous areas installation inspectors shall be appropriately
trained and qualified to carry out hazardous area inspections.
12. Audit inspections
Audit inspections will be carried out to observe that legislative requirements have been met with
regard to electrical installations, installing contractors and the inspection and testing function to
measure the effectiveness of the Installation Inspection program,.
The frequency of the audits will be at a level which contributes to maintaining or exceeding
existing minimum safety outcomes.
Audit inspections will be co-ordinated by the Manager EDA, Sydney Trains.
13. Forms
The following forms are available on the ASA Website and are used when implementing this
standard:
EP 95 00 30 03 SP FM 01 – Information regarding application for connection
EP 95 00 30 03 SP FM 02 – Application for Connection
EP 95 00 30 03 SP FM 32 – Application for Temporary Connection
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Appendix A Discretionary inspections flowchart
Discretionary inspections follow a process that includes the following stages:
Preliminary assessment stage
Assessed Contractor stage
Defect identification
Figure 1 - Discretionary inspections
A.1 Preliminary assessment stage
The first three Certificate of Compliance Electrical Work (CCEW) jobs received from each electrical contractor are to be assigned for an inspection.
If there are no major defects in three consecutive jobs, then the contractor's jobs move to the 'Assessed Contractor' stage.
A.2 Assessed contractor stage
Additional jobs received from an electrical contractor will be inspected depending on the risk
profile.
If access is not available, another job may be assigned for inspection or access to the job
arranged for a later date at the discretion of the inspector.
If no major defects are detected during the inspection, the 'Assessed Contractor' stage
continued as more jobs are notified.
A.3 Defects
If a major defect is detected during an inspection, the contractor is moved back to the
'Preliminary inspection' stage.
Major defect details for the jobs are to be recorded in the inspector's database for each contractor.
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Appendix B Installation inspection flowchart
Figure 2 - Installation inspection flowchart
Related topic:
Visual inspection check list; Appendix C
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Appendix C Visual inspection check list Table 1 - Visual Inspection Checklist
Inspection Category Inspection aspect Comments/Example
Protection against direct contact with live parts
Insulation, enclosure
Protection against indirect contact with exposed conductive parts
Double insulation or isolating transformers
Protection against hazardous parts Enclosure, guarding or screening of flammable materials, hot surfaces and parts that may cause physical injury
Protection against spread of fire Penetration of fire barriers
General condition of the electrical equipment
Signs of damage that could impair safe operation, disconnection of unused electrical equipment
All wiring and equipment which could be susceptible to mechanical damage is adequately protected
General
Insulated joints in any continuous earthed metallic structure
Fencing, water pipes
Sufficient current carrying capacity
Voltage drop with allowable limits
Installation conditions Enclosure, depth of burial, mechanical protection and other conditions affecting the de-rating of any cabling
Aerial installation conditions
Connection of wiring
Consumer mains
Protection against external influences
Location Suitable access and egress
Protective devices Overload and residual current rating, fault current rating
Isolating devices Main switches, isolating transformers
Connection devices Neutral and earth bars, and active links
Connection and fixing of wiring and switchgear
Correct identification and labelling of electrical equipment
Neutral/active labelling
Switchboards
Protection against external influences
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Wiring systems Conductor size Current-carrying capacity and voltage drop
Identification of cable cores
Adequate support and fixing
Connections and enclosures
Particular installation conditions Underground, aerial, emergency systems
Segregation from other services and electrical installations
Protection against external influences
Enclosure
Electrical equipment Isolation and switching devices for protection against injury from mechanical movement devices and
motors
Isolation and switching devices for protection against thermal effects
Motors, room heaters, water heaters
Switching devices for particular electrical equipment
Socket outlets, cooking appliances
Particular installation conditions and the suitability for connection of the equipment under these conditions
Locations affected by water, explosive atmospheres, extra-low voltage, high voltage
Compliance with required Standard
Connection, support and fixing
Protection against external influences
Earthing Earth/Neutral connection at transformer/switchboard (where applicable)
Earth grid
Earthing conductors Size, identification
Equipotential bonding conductors Size, identification
Connections, joints and terminations
Protection against external influences
Correct connection to earthing arrangements for other systems (Note that this could mean separation rather then connection)
Signalling, communications, traction
Creation of earthed situation that may require earthing of additional electrical equipment
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Appendix D Guidelines for completing defect forms Following is an extract of section 9 & 10 of the Energy Authority of NSW publication -
“Recommend Standard Inspection Procedure for Existing Electrical Installations” (June 1981). It
is included as guidance to inspectors in completing defect forms
9.0 REPORTS TO CONSUMERS
9.1 Reports of defects or unsatisfactory conditions found in installations should be set out in such a manner that they will be clearly understood by the consumer or his contractor and so as to assist the contractor as much as possible in locating and identifying the faulty portion and in determining what action he must take to remedy the fault.
9.2 Each item of the report should consist of a clear statement describing the defective condition. Attempts to set out the method of rectifying the fault should be avoided. For example, if it is found that trees and vines have grown up and fouled aerial conductors, the report should read somewhat as follows:
“The aerial conductors to the garage were fouled by trees and vines”.
and NOT
“Trees and vines, fouling aerial conductors to the garage, to be cut back”.
(The consumer may prefer to rectify the defect by raising or re-routing the aerial conductor instead of by cutting his trees.)
9.3 It is, of course, important to identify the particular portion of the installation to which the report refers in order that the contractor will not be in doubt as to the portion requiring attention.
9.4 In setting out the results of their inspection, Inspectors should appreciate the importance of always using correct terms, and should remember that the use of “trade jargon” frequently leads to serious misunderstandings. Experience has shown that if the correct terms are consistently used by the inspection officers, they will always be understood by Electrical Contractors and will be rapidly adopted by them.
9.5 The words “not satisfactory” or “unsatisfactory” should not be used to avoid specifying defects. Such an expression, however, may be used to describe a condition provided it us qualified by stating the reason or reasons why it is not satisfactory. It may also be used in the case where the whole of an installation is found to be in such bad condition that there would be little point in specifying particular defects. Such a report would read:
“The whole of the installation was in such an unsatisfactory condition that it requires a complete overhaul”.
10. SAMPLE DEFECT STATEMENTS
10.1 The following sample statements indicate the proper method of reporting defects that will commonly be found by Inspectors. These sample statements need not, of course, be followed exactly if an alternative statement is either more concise or more definite and conforms to the principles set out in these guidelines.
10.1.1 The rigid pendant in the kitchen was insecure.
10.1.2 The ceiling switch in the bathroom was insecure, thus placing strain on the conductors.
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10.1.3 The conduits on the back verandah were not securely fixed in position where they passed along the back wall.
10.1.4 The conduits on the back verandah were not mechanically and electrically continuous as they had pulled apart at the fittings.
10.1.5 The flexible cord for the radiator was frayed and damaged.
10.1.6 The flexible cord, from the plug socket in the second bedroom to the standard lamp in the hall, was damaged where it passed through the doorway.
10.1.7 The insulation on the flexible pendant in the kitchen was perished, thus exposing live conductors (temporarily made safe by taping).
10.1.8 The use of lampholder and adaptor to join the flexible cord for the radio was not satisfactory.
10.1.9 The improvised hand-lamp consisting of a lampholder mounted on a wooden block and having an unguarded lamp was not satisfactory. (Situated in the garage.) DISCONNECTED -LABELLED
10.1.10 The frame of the motor in the garage was not earthed.
10.1.11 The frame of the washing machine was earthed by means of a conductor not forming part of the flexible cord supplying the machine.
10.1.12 The earthing conductor above the bench in the garage was broken.
10.1.13 The earthing conductor adjacent to the laundry door was not securely fixed.
10.1.14 Some of the joints in the earthing conductor near the switchboard were not soldered or suitably clamped.
10.1.15 The metallic conduits in the garage were not earthed.
10.1.16 The connection of the earthing conductor to conduits at the main switchboard was not electrically effective.
10.1.17 The main earthing conductor on the southern side of the house was not connected to the water service (no earth clip fitted.)
10.1.18 The resistance between earth and metallic conduits at the switchboard was high (measured 200 ohms).
10.1.19 The metallic conduits in the following locations were not earthed:
(a) Kitchen,
(b) Back verandah,
(c) Main switchboard.
10.1.20 The metallic conduits in the garage were not earthed in a satisfactory manner. (Earthed to a separate electrode instead of to the main earth.)
10.1.21 The sheathing of an isolated length of lead covered cable in the garage was not earthed and was not protected against mechanical damage.
10.1.22 The switch for the plug socket in the dining room did not control the active conductor.
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10.1.23 The main switch was broken and inoperative in the “ON” position and thereby the installation was not longer under the control of a main switch.
10.1.24 The metal cover of the switch in the bathroom was alive, (temporarily made safe by lining the switch cover with an insulating material.)
10.1.25 The plug socket in the dining room was not controlled by a switch.
10.1.26 The switch controlling the plug socket in the dining room was inoperative in the “ON” position.
10.1.27 The cover of the light switch in the bathroom was broken thus exposing live metal (temporarily made safe by taping).
10.1.28 The porcelain base of the power circuit fuse on the main switchboard was broken thus exposing live contacts (temporarily made safe by taping).
10.1.29 The heating element of the toaster was broken and likely to made contact with the frame., (toaster and the permanently attached flexible cord DISCONNECTED - LABELLED).
10.1.30 The electric jug was not provided with a lid and thus exposed live conductor. DISCONNECTED - LABELLED.
10.1.31 The aerial conductors to the garage were fouled by trees and vines.
10.1.32 The insulation resistance between earth and the neutral conductor of the power circuit was extremely low. (measured.__ ohms).
10.1.33 The insulation resistance between the frame and the elements of the radiator was very low. (measured .__ ohms).”