UEENEEE107A - Understanding and Using Technical Drawings, Diagrams, Schedules and Manuals

This course covers the essential skills and knowledge required to understand and use technical drawings, diagrams, schedules and manuals in the electrotechnology industry. Students will learn about the different types of drawings and diagrams, their purpose, format and content, and how to use them to obtain job information and convey information and ideas. The course also covers the relevant standards, codes and specifications that apply to electrical work.

UEENEEE107A

Contents
Written Activity....................................................................................................................................................................... 3
Task 1 - Architectural drawings................................................................................................................................... 3
Task 2 - Electrical drawings........................................................................................................................................... 6
Task 3 - Circuit diagrams................................................................................................................................................ 9
Task 4 - Wiring diagrams............................................................................................................................................. 11
Task 5 - Building construction drawings and diagrams..................................................................................13
Task 6 - Regulation for undertaking electrical work......................................................................................... 17
Task 7 - Standards philosophy and format........................................................................................................... 19
Task 8 - Purpose, format and content of typical job specifications.............................................................22
Task 9 – Procedure......................................................................................................................................................... 23
Question................................................................................................................................................................................... 24
Q1 Discuss the different levels of the hierarchy of control?...........................................................................24
Q2. There are a range of different types of diagrams and schedules that can be used to inform on
work tasks. List six.......................................................................................................................................................... 24
Q3. What information will be included in job specifications?.......................................................................24
Q4. How can you obtain information external to your organization?........................................................25
Q5. What steps are involved in using drawings, diagrams, schedules and manuals to obtain job
information?...................................................................................................................................................................... 25
Q6. Outline the method can be used to identify the range of documentation needs for a specific
job.......................................................................................................................................................................................... 26
Q7. Discuss the content and uses of one type of diagram, drawing, schedule or manual that you
consistently use in your work.................................................................................................................................... 26
Q8. What are the standard fractions used to scale architectural drawings and diagrams
components?..................................................................................................................................................................... 26
Q9. What is the format of typical manuals?........................................................................................................... 27
Q10. When creating freehand drawings in place of formal technical drawings it is essential to
ensure what?..................................................................................................................................................................... 27
Q11. What do you need to keep in mind when transposing freehand drawings to technical
drawings?............................................................................................................................................................................ 27
Q12. Who may be the appropriate persons who you should submit completed drawings to?........27
Q13. Discuss two of the types of electrical licenses in Australia..................................................................28
Q14. When must a Certificate of Compliance be completed?.........................................................................28

Written Activity
Task 1 - Architectural drawings
1. What information should be included in a site plan?
A site plan is a graphical representation of a readable map that shows the arrangement of
landscaping, building along with parking area and any other external feature such as garden,
large trees, power lines, the location of any easements on the land, fencing etc. The
architectural drawings of site plans include following information: building footprints, water
lines, parking area, sanitary, lighting, travel ways, landscaping and garden elements. The site
plan must illustrate the location of road furniture like poles or fence the location of already
located building and parks and the roads which are adjoined to the land etc.
2. What information should be included on a floor plan?
In architectural drawings, the floor plan is designed to show the view from the top and also to
show the relationship between the physical features like rooms, traffic patterns and spaces at
a single level of structure. Floor plan includes the information of facts of equipment like
water heaters, sinks, furnaces etc. To determine the size and length of rooms and walls
respectively, magnitudes are drawn. Complete building or one floor or a single room can be
depicted from the architectural drawing of floor plans.
3. When using an architectural floor plan in order to determine the location and requirements
for the power and lighting or communications/audio/video layouts required in a domestic
installation, what will you need to take into consideration?
For domestic installation, the architectural floor plan is required to find out the power,
audio/video layouts, lighting etc. and the following information is required such as wiring
and circuit requirements for connection, standard symbol, and detail of floor plan.
4. Discuss the following in regards to site plans:
a. Service point
b. Consumers mains
c. Main switchboard

d. Distribution boards
e. Builder’s supplies
a. Service Point: The service point shows the exact location of floor plan where electrical wiring
and electrical provider meets.
b. Consumers mains: Consumer mains mean wiring in the premises and installation of the
building of low voltage.
c. Main switchboard: It is an essential part of every electric circuit which supplies electricity
from one or more devices to smaller sources.
d. Distribution board: it is a part of the electric system in which electric power is divided into the
smaller circuit and provides secure fuse to each circuit.
e.Builder’s supplies: Builder requires electrical supply to use the power required for the
construction of the building.
5. What is the most common scale used for floor plans? What does it represent?
The most common scale used for floor plan is ¼ inch which is equivalent to 1 foot. It
represents that 1/4inch drawn in floor plan is equal to 1 foot in real life.
6. Draw or define the following to complete the table of Australian standardized symbols for
floor plans used on floor plans:
The Time switch is a
timer controlled by
time machine and
operates the electric
switch.
Dimmer switch
The position of
lighting outlet
shown with wiring
Connection or
junction box

The projector is used
to show the circuit
arrangements
Floodlight
Electric bell
produces sound
when an electric
current applied
Double pole switch

Task 2 - Electrical drawings
1. Describe the purpose of each of the following types of electrical drawings:
a. Block diagrams
b. Circuit diagrams
c. Wiring diagrams
d. Ladder diagrams
a) Block Diagrams: Block Diagrams are used in electronic design to show the relationship
between blocks by connecting them to lines.
b) Circuit Diagrams: A circuit diagram also called the electrical diagram is used to graphically
show the electric circuit.
c) Wiring Diagrams: Wiring diagram is a symbolic illustration of an electric circuit.
d) Ladder Diagrams: In ladder diagrams, functions of the control circuit are represented.
2. Draw or define the following to complete the table of Australian standard symbols used to
represent components on electrical diagrams:
Closed Switch
means the flow of
electricity.
Switch – open
Resistor controls the
flow of electric
current
Single cell
An Ammeter is used
to measure the
electric current
Lightbulb
Fuse provides
protection to
electric circuit
Voltmeter

3. What are the conventions and used in and the features of circuit diagrams?
To make sure that all workers are using the diagram the incorrect way, standard circuit
diagrams are used with standard symbols. The main components used in circuit diagram
includes Protection devices, Conductors, Device controls, capacitors, diodes, resistors,
inductors, load, transistors, power source, and ground. Circuit diagram includes two main
features: one is that all connections must be in order and second is that all components should
use standard symbols.
4. What is required to convert a circuit diagram to a wiring diagram?
To convert a circuit diagram into wiring diagram, it is necessary to make sure that wiring
diagram must have all the required information and for this, check all connection
requirements, switches required for connection and terminal connections
5. What is a cable schedule?
To complete the installation of specific circuit or wiring task, cable schedule is required that
contains all necessary cables. It can be designed to determine the approximate length,
resources, and materials required for the diagram.
6. What information will be listed on the cable schedule regarding each of the cables included?
The following information is listed on the cable schedule:
 Size of each cable
 Cable number
 Complete detail of resource, endpoint and destination of cable
 Each cable’s length
 dimensions necessary for each cable
 what type of cable is required
7. What steps are involved in developing a cable schedule for a given installation?
Following steps requires in budding a cable plan for given installation:
 For each connection, check all requirements of cables.

 Check all cable routes and access points required to develop a cable schedule.
 Record all cables
 Find appropriate specifications for each cable
 Make an easy and readable table that includes all information mentioned in above
steps.

Task 3 - Circuit diagrams
1. What is the purpose of circuit diagrams in the electrotechnology industry?
In electrotechnology industry, the main purpose of using circuit diagrams is that electrical
worker should know the steps of setup and the basic mechanism of the circuit. Circuits
diagrams can be used in the planning of electrical work, troubleshoot circuits, determining
the resources required, to calculate circuits and perform a security analysis.
2. Draw and label a basic circuit diagram showing at least three components.
3. What are the steps that need to be conducted in order to develop a switching chart for use
when planning and conducting electrical work?
While planning and conducting electrical work to develop a switching chart for use,
following steps are required:
 Classify all the terminal required for each switch
 Check the position of switches, possible terminal connections and terminal by using
the meter.
 Put all these things into the table

4. What needs to be kept in mind when preparing to connect equipment using circuit diagrams?
While preparing to connect equipment using circuit diagrams, all information must be
consulted and calculations made in connecting equipment must also be performed to make
sure that all terminal connections and details will not show when circuit requirements linked
with circuit diagrams.

Task 4 - Wiring diagrams
1. What is the purpose of wiring diagrams in the electrotechnology industry?
Wiring diagrams can be used to represent the planning of system wiring, house wiring,
device wiring and lighting plans. Its main purpose is to show the symbolic representation of
complete circuit or complete installation of the electrical circuit.
2. What conventions are used in wiring diagrams?
A wiring diagram provides the information on arrangements and positions of devices and end
point of devices. Standard symbols are used in standard wiring diagrams to show the
electrical components. Conventions used in wiring diagrams include resistor, capacitor,
inductors and relays.
3. What are the features of wiring diagrams?
Features of wiring diagrams are:
 Connections of terminals
 Basic symbols required to connect in circuit
 The relationship between devices and connections
 Structure of the wiring circuit
4. What can sketch basic wiring assist with?
Some workers draw the basic sketch of the wiring diagram to understand the symbolic
representation of an electrical plan. Sketching the basic wiring diagrams can be very simple
and basic and assist in making plans and development of wiring systems and in
troubleshooting also. Also, sketching of basic wiring diagrams should be drawn with
standard electrical symbols.
5. Draw or define the following to complete the table of Australian standard symbols used in
wiring diagrams

Electrolytic changes
electrical changes
into chemical
changes
Variable capacitor
The iron core is rung
with two coils in it.
Headphones
(double)
The Antenna
provides
interconnection links
between transmitter
and receiver
Telegraph key

Task 5 - Building construction drawings and diagrams
1. List and briefly describe the four building types that electrical work may need to be
conducted within.
The four building types that electrical work may need to be conducted within are Brick
Veneer, Metal Frame, Timber Frame and Double Brick.
 Timber Frame: Tinder Frame building type can be made from the wooden thing and
are interconnected with each other to provide the internal and external structure of the
building.
 Brick Veneer: Brick is a general building type and structured with tinder frame that is
rigged with the non-structural wall of flat brick.
 Double Brick: Double brick building type is made up from two strong brick walls and
there is space left between these walls.
 Metal Frame: Metal frame building types are made from the metal frame which is a
grid formation of flat metal beams and upright metal columns.
2. List two examples of each of the following:
a. Footings
b. Floors
c. External walls
d. Roofs
e. Interior walls
a) Footings: Two examples of footings are a band and concrete slabs.
b) Floors: Two examples of floors are stand floors and sub-floor framing.
c) External Walls: Two examples of external walls are a stone shell and metal shell.
d) Roofs: Two examples of roofs are gable and pitched.
e) Interior walls: Two examples of interior walls are: wood shell and bricks.

3. List and describe two types of typical cable routes through buildings, structures and
premises.
Cable routes are the paths that should be carefully planned to make sure all the safety
requirements, and they do not obstruct with other building’s components. Typical cable
routes are equipment rooms, entrance facilities, horizontal and backbone cabling. Two
typical cable routes are described here:
 Entrance facilities: In entrance facilities cable route, all cables that will be cabled in
the building will connect with the telephone and electrical lines
 Backbone cabling: In backbone cabling, there is the main route cabling that cable in
all floor of the multilevel building.
4. Detail the sequence of each constructional stage for one of the following: brick, brick veneer
or timber cottage
The series of each constructional stage for brick cottage are:
 Plumbing of basement
 Wiring in basement
 Brick base
 Dig of footings
 Termite handling
 Material chunk
 Plumbing of base
 Floor frame
 Brick ramparts
 Top trusses
 The framing of doors and windows
 Roof and guttering
 Outside doors

 Cabling
 Telephone
 Gas
 Block cleaning
 Wet area preparation
 Padding of wall
 Internal lining
 Last plumbing
 Final electrician
 Padding of ceiling
 Finishing’s
5. At what stage of construction does first fixing occur?
The first fixing occurs when the work of roof, external doors and fitting have been done and
the construction work of building is done but not finished. So, the final fitting will be done
when the electrical worker put the cable route in the entire house from the main supply to all
small points in the house.
6. At what stage of construction does second fixing occur?
The second fixing of electrical supply occurs when the work of all insulation and walls have
been done. During this segment, final connections of power outlets, light fittings and wired
devices will be finished in the complete building.
7. Who are some of the personnel and trades you may need to communicate with during the
construction process of a home?
During the construction process of a home, communication and cooperation like taking and
giving instruction, the path to complete the requirements of another tradesperson, scheduling
time etc should take place with personnel and trades. Some of the personnel and trades are:
 Building planner

 Plumbers
 Carpenters
 Construction supervisor
 Builders
 Client
 Electrical trader
 Other trades people on site

Task 6 - Regulation for undertaking electrical work
7. What are the 6 types of electrical licenses in Australia?
Six types of electrical licenses in Australia are:
 Electrical jointer license
 Electrical mechanic license
 Electrical work training license
 Electrical linesperson license
 Prohibited electrical work license
 Electrical jointer license
8. What are the fundamental principles of an electrical installation that are outlined in
AS/NZS3000?
The fundamentals principles of an electrical installation that are outlined in AS/NZS3000 are:
 The first fundamental principle is to protect persons, property and livestock from
dangers and damage during electrical installations.
 Control and remote devices should be used during electrical installations to prevent
from hazards.
 There should be protected from the shock arises from the direct contact i.e. parts that
are in direct touch with equipment and from indirect contact i.e. parts that are under
fault conditions.
 Basic protection should be provided from insulation, barriers or from parts that are
directly connected to electrical appliances or circuit board.
 Provides basic and fault protection using low-voltage
9. Discuss the certification of electrical work
The certification of electrical work ensures that the person who has this certificate is
responsible for the safety of installation of electrical equipment and also declares that
whenever new installation or alternation has been done, it should be secure and safe. During

any injury or damage of property during electrical installation, this certificate shows as
evidence that helps in presenting the safe installation. An EIC (Electric Installation
Certificate) should be made on every electrical installation. The certificate also determines
whether the electric work that has done is new or altered.

Task 7 - Standards philosophy and format
1. Define the following:
a. Performance standards
b. Prescriptive standards
a) Performance standards: performance standards are standards by which people get to
know what actually a good job is and provide them with some expectations for each
task. Performance standards are observable and based on the complete task, not the
individual and also presents in form of quality, cost, quantity, and safety.
b) Prescriptive standards: To bring out designs, production or construction action,
prescriptive standards are used that states actions. A prescriptive standard gives
direction and rules.
2. What is the purpose of technical standards?
A technical standard is required in technical systems. It is generally a standard that generates
methods, technical criterion, and processes. The main purpose of using technical standards is
that it provides mutual understanding between people and organization, improved market
access and increased business.
3. How are technical standards developed?
Technical standards can be developed unilaterally or privately like from corporation,
organization, regulatory body etc. It can also develop from groups such as trade relations and
business unions.
4. What is the ISO?
ISO means International Organization for Standardization is an independent organization that
has 168 member countries. There are 3 official languages: French, Russian and English. In
ISO, there are 20 standards from technical standards to agriculture and health care. These
standards help to increase efficiency and reduce the wastage of material. The standards also
ensure consumers about the safety of products.

5. What is the IEC?
IEC stands for International Electrotechnical Commission is an ISO standard that makes
standards for all electronic and electrical related work. IEC standards include a large number
of technologies such as power generation, semi-conductors, fibre-optics, solar energies, and
transmission to home appliances, batteries, and many others. This standard also manages that
whether the equipment or component belongs to the international standard or not.
6. How are standards used in compulsory and accreditation compliance schemes?
In some cases, it is not necessary to use standards but the legislation and codes make it
compulsory to use standards in lots of cases. All standards must be written in compulsory and
accreditation compliance schemas. Standards are used for the reliability of features of goods
and services such as compatibility, ecology, efficiency, safety, quality, interoperability and
effectiveness.
7. What information is included in electrical technical standards?
An electrical technical standard includes the information on basic needs of performance,
safety and size of equipment. It includes:
 Safety requirements
 Testing requirements
 Terms
 Installations
 Communication and drawing
 Quality standards of all products
 Types of electrical work
8. What do you need to keep in mind when reading and applying standards?
When reading and applying standards, it should be kept in mind that all the information of a
specific task must be completely understood and readable so that all the aspects of standards
can be useful to that specific task.
9. List at least six standards and codes that apply to all types of electrical installations

Six standards and codes that apply to all types of electrical installations are:
 AS/NZS 3000 Wiring rules
 Electrical safety code of practice 2013-Managing electrical risks in the workplace
 AS/NZS 3012 Electrical installations-construction and destruction sites
 Electrical safety codes of practice 2010-works
 Australian drawing standard AS/NZS
 Electrical safety code of practice 2010-Electrical equipment rural industry
10. What is the state-mandated Standards and regulations that you need to follow in your
workplace?
The state-mandated standards and regulations that we need to follow in our workplace are:
state and territory service rules government and AS/NZS 3000 wiring rules.
11. Discuss two of the Codes applicable to electrical safe working practices.
The codes that are applicable to electrical safe working practices include: The BCA that must
be included with the building act has two volumes: first is Commercial building i.e. buildings
from class 2-9 and second is Residential building i.e. building from class 1-10.

Task 8 - Purpose, format and content of typical job specifications
1. Discuss the NATSPEC specification system
NATSPEC is an online portal that has different working systems in different areas of the
manufacturing building that includes electrical workers to create the detailed and complete
job qualifications lists and have the work specifications that are preprogrammed and can be
related to different industry sectors. The main aim of NATSPEC specification system is to
give the organization complete information so that they can prepare details for the
construction industry. This system is in the block format and defines how classification
system can be the group to make easier for the electrical worker to work.
2. What sections are included on common workplace job specification templates?
The basic purpose of common workplace job specifications is to make sure that the system
has all standards and requirements of the particular task. Following sections are included on
common workplace job specifications templates:
 All duties and responsibilities
 Necessary workings of a task
 Resources
 Standards
 Performance requirements
 Relevant legislation
 synopsis of job task
 Relevant codes of practice
 Reporting requirements
 Qualification and licensing requirements

Task 9 – Procedure
For this task you are to write about a time you have used at least two of the following to inform
your work: drawings, diagrams, schedules, standards; and at least one of the following: codes or
specifications. In your report you will need to ensure that you identify the various documents that
you used, the steps you followed to prepare to use the documents, the steps you followed to use
the documents to obtain job information, the steps taken to use the documents to convey
information and ideas, and how you prepared and used compliance standards, codes and
specifications.
A time when drawing of the site plan is used: during construction of the building
A time when the diagram of circuit diagram is used is during the development of circuit.

Question
Q1 Discuss the different levels of the hierarchy of control?
In the hierarchy of control, there are various control measures which are used to reduce the
hazards. There are 5 levels in the hierarchy of control. First is to know the risk, second is
examine the risk, third is an assessment of risk, fourth is treat the risk and last is an analysis of
risk.
Q2. There is a range of different types of diagrams and schedules that can be used to
inform on work tasks. List six.
It is essential to determine the type of tasks and work and this can be determined by different
types of schedules and work specification. Different types of diagrams and schedules that can be
used to inform on work task are:
 Cable schedules
 Wiring diagrams
 Floor plans
 Block diagrams
 Site plans
 Work Schedules
Q3. What information will be included in job specifications?
Following information is included in job specifications:
 The required mechanism of task
 Synopsis of job task
 Standards
 Essential components for performance
 Applicable legislation
 security information
 All duties and liability

 Property
 Requirements for license and qualifications
 Appropriate codes of practice
 Appropriate legislation
Q4. How can you obtain information external to your organization?
The information can be obtained through the following process:
 Find out the objects required for the system.
 Identify the location of these objects.
 Examine the workplace process to access these objects.
 If there is no process, then make contact with the organization to request for their
procedure.
 Put the essential papers and forms.
 Find the information.
Q5. What steps are involved in using drawings, diagrams, schedules and manuals to
obtain job information?
Steps involved in using drawings, diagrams, schedules and manuals to obtain job information
are:
 First of all, discover the requirements of the documents
 Know the basic classification
 Explain from the information of layout and symbols
 Verify the symbols
 Take dimensions from the standard fractions
 Identify the equipment
 Understand all information and make use of manuals for the reviews

Q6. Outline the method can be used to identify the range of documentation needs for
a specific job.
Following steps are involved to obtain job information using drawings, diagrams, schedules and
manuals.
 Access and understand the work task and information.
 Identify the appropriate diagrams, schedules and drawing that will be required.
 Make a request to obtain the diagrams, schedules and drawings.
 Read and understand these diagrams and schedules.
 Confirm the work.
 Planning and exec0ution of work.
Q7. Discuss the content and uses of one type of diagram, drawing, schedule or
manual that you consistently use in your work.
Technical drawing is used to create such drawings that can visually communicate the technical
information and conditions to describe the correct order of work or the construction of work.
Technical drawings allow clear communication using scaling, standard symbols, common styles
and inclusions, layout, specific system and languages.
Q8. What are the standard fractions used to scale architectural drawings and
diagrams components?
The standard fractions used to scale architectural drawings and diagrams are:
 1/50th or 1:50 means the real object will be 50 times of the object on architectural diagram
or drawing.
 1/100th or 1:100 means the real object will be 100 times of the object on architectural
diagram or drawing.
 1/200th or 1:200 means the real object will be 200 times of the object on architectural
diagram or drawing.
Q9. What is the format of typical manuals?
The format of typical manuals include following sections:

 Contents
 Diagrams
 Sections for each class and work section
 Appendixes
 Complete information of different types of action or work jobs
 Sustaining information
 Glossary
Q10. When creating freehand drawings in place of formal technical drawings it is
essential to ensure what?
When correctly drawn technical and standard drawing is not available, freehand drawing is used
as a substitution. When creating freehand drawings, it is essential to ensure the necessary details
of technical drawings that were made from the freehand drawing and for this; various
calculations have been made and checks the required details.
Q11. What do you need to keep in mind when transposing freehand drawings to
technical drawings?
When transposing freehand drawings to technical drawings, it is essential to correctly use the
layout of technical drawings that are transposed. All diagrams and drawings must:
 Include standard symbols.
 Draw all lines accurately.
 Be transposed at level.
 Include and calculate all dimensions and connections.
 Be presented from standard drawing conventions.
Q12. Who may be the appropriate persons who you should submit completed
drawings too?
Complete drawings should be submitted to following persons: user, authorized business persons,
electrical wholesalers, supervisors, local council and other business people.
Q13. Discuss two of the types of electrical licenses in Australia.
Two types of electrical licenses in Australia are discussed here:

 Electrical Mechanic License: It is an open license that allows the workers to legally
complete jobs such as the installation of overhead electrical lines; completion of electrical
wiring and repairing of all types of electrical devices and equipment.
 Electric Fitter License: This license allows the person to legally complete the following
electrical works such as construction and assembling of an electrical control panel,
repairing and rewinding of electric motor and maintenance electrical devices.
Q14. When must a Certificate of Compliance be completed?
Certificate of Compliance must be completed every time when the worker performs
following activities such as additions, alterations, connections, disconnection and
reconnection of devices, or replace the equipment on every installation.