NZQA registered unit standard
11576 version 5
Page 1 of 5
Title
Demonstrate and apply knowledge of building electrical services
engineering
Level
6
Purpose
Credits
15
This unit standard covers the knowledge and application of
building electrical services technology requirements for
industrial and commercial buildings.
People credited with this unit standard are able to:
–
demonstrate knowledge of building electrical services;
–
test electrical installations;
–
demonstrate knowledge of the importance of electrical
earthing systems used in buildings; and
–
demonstrate knowledge of methods used to control the
environment and security in buildings.
Classification
Electrical Engineering > Electrotechnology
Available grade
Achieved
Entry information
Recommended skills
and knowledge
Unit 22721, Demonstrate and apply fundamental knowledge of
electrical circuit engineering principles, Unit 22722,
Demonstrate and apply introductory knowledge of electrical
circuit engineering principles, Unit 22723, Demonstrate and
apply intermediate knowledge of the elements of power
engineering, Unit 22724, Demonstrate and apply knowledge of
electrical machines, and Unit 22726, Demonstrate and apply
introductory knowledge of electronic engineering; or
demonstrate equivalent knowledge and skills.
Explanatory notes
1
This unit standard is intended for use in engineering courses at diploma level.
2
References
Building Act 2004;
Electricity Act 1992;
Electricity (Safety) Regulations 2010;
Health and Safety in Employment Act 1992;
and all subsequent amendments and replacements.
The Skills Organisation
SSB Code 100401
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
11576 version 5
Page 2 of 5
3
Definitions
HRC – high rupturing capacity.
Industry practice – practice used and recommended by organisations involved in the
electrotechnology industry.
MCB – miniature circuit breaker.
PVC – polyvinyl chloride.
UPS – uninterruptible power supply.
XLPE – cross-linked polyethylene.
4
All measurements are to be expressed in Système International (SI) units, and,
where required, converted from Imperial units into SI units.
5
All activities must comply with: any policies, procedures, and requirements of the
organisations involved; the standards of relevant professional bodies; and any
relevant legislative and/or regulatory requirements.
6
Range
a performance in relation to the outcomes of this unit standard must comply with the
Health and Safety in Employment Act 1992;
b laboratory and workshop safety practices are to be observed at all times.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of building electrical services.
Evidence requirements
1.1
Methods of providing electrical reticulation within buildings are described in
accordance with industry practice.
Range
1.2
Cables for providing electrical reticulation for given building applications are
identified and justified in accordance with industry practice based on load,
temperature, fault level, and installation method.
Range
1.3
mains, submains, radial, ring main and rising main distribution
systems.
domestic and industrial buildings;
current, temperature, voltage drop, short circuit conditions for
cables with PVC and XLPE insulation, soil thermal resistivity,
installation environment.
Fuses, circuit breakers, and monitoring relays for the protection of electrical
circuits are identified in accordance with industry practice and the reason for
their selection is justified.
Range
The Skills Organisation
SSB Code 100401
construction and operation of HRC fuses, MCB and relays both on
overload and short circuit; pre-arcing and arcing time, arcing
energy, cut off, let through energy; the effects on the protected
circuit.
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
11576 version 5
Page 3 of 5
Outcome 2
Test electrical installations.
Evidence requirements
2.1
Tests are conducted and calculations are performed on symmetrical electrical
installations under short circuit fault conditions.
Range
the percentage and the per unit methods for calculating short
circuit fault levels within power systems from 11 kV downwards.
Outcome 3
Demonstrate knowledge of the importance of electrical earthing systems used in buildings.
Range
electrical safety, system protection.
Evidence requirements
3.1
Need for and the application of earthing systems is explained with the aid of
diagrams, in accordance with the Electricity (Safety) Regulations 2010.
3.2
Earthing systems are identified and compared in terms of application and
practicality in accordance with industry practice.
Range
3.3
vertically driven earth rods, bare conductors buried in trenches,
reinforcing steel in concrete foundations.
Methods of measuring the resistance of earthing electrodes and soil resistivity
are investigated and detailed in accordance with industry practice.
Range
tests on earth electrodes and soil types to be conducted using
earth resistance testers.
Outcome 4
Demonstrate knowledge of methods used to control the environment and security in
buildings.
Evidence requirements
4.1
Conditions necessary to provide personal comfort for the occupants of buildings
are described in accordance with industry practice.
Range
4.2
heating, ventilating, air conditioning.
The heating load of a building for a given environmental condition is determined
in accordance with industry practice.
Range
The Skills Organisation
SSB Code 100401
heat gains, building material losses, temperature range.
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
4.3
Principles and methods used for efficient energy control in buildings are
explained.
Range
4.4
New Zealand electricity tariff systems, electronic energy
controllers.
Principles and methods of providing personal security in buildings are explained
in accordance with industry practice.
Range
4.5
11576 version 5
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fire, entry control, lighting.
Principles of providing standby and emergency power supplies in buildings are
described in accordance with industry practice.
Range
generator types, UPS power supplies, hybrid combinations of
solar, wind and fossil fuels.
Planned review date
31 December 2014
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
24 February 1998
31 December 2013
Revision
2
12 December 2000
31 December 2013
Review
3
18 December 2006
N/A
Rollover and
Revision
4
15 March 2012
N/A
Revision
5
15 January 2014
N/A
Consent and Moderation Requirements (CMR) reference
0003
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA,
before they can report credits from assessment against unit standards or deliver courses
of study leading to that assessment.
Industry Training Organisations must be granted consent to assess against standards by
NZQA before they can register credits from assessment against unit standards.
Providers and Industry Training Organisations, which have been granted consent and
which are assessing against unit standards must engage with the moderation system that
applies to those standards.
Requirements for consent to assess and an outline of the moderation system that applies
to this standard are outlined in the Consent and Moderation Requirements (CMR). The
The Skills Organisation
SSB Code 100401
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
11576 version 5
Page 5 of 5
CMR also includes useful information about special requirements for organisations wishing
to develop education and training programmes, such as minimum qualifications for tutors
and assessors, and special resource requirements.
Comments on this unit standard
Please contact The Skills Organisation reviewcomments@skills.org.nz if you wish to
suggest changes to the content of this unit standard.
The Skills Organisation
SSB Code 100401
 New Zealand Qualifications Authority 2016