International Islamic University Chittagong
Department of Electrical and Electronic Engineering
Lab Manual
Course Title: Electrical Service Design Sessional
Course Code: EEE-3612
Experiment No-1: Familiarization with different types of tools and wiring based appliances.
Objective:
1) To learn about different types of tools and wiring based appliances.
Familiarization of Tools:
1) Different types of pliers
I)
Combinational Pliers
II)
Side Cutting Pliers
III)
Nose Pliers
IV)
Monkey Pliers
2) Different Types of Screw Drives
I)
Standard Screw Drives
II)
Thin Blade Screw Drives
III)
Square Blade Screw Drivers
3) Wire strippers
4) Electrician Knife
5) Hammer
I)
Straight Hammer
II)
Ball Peen Hammer
6) Adjustable Wrench
7) Wire Jointing Tape
8) Wire Connector
9) Wire Gauge
Report:
1) Sketch every tool and appliance.
2) Write down its advantages and use.
3) What will you learn from this lab?
Reference Book:
Electrical Wiring, Estimating and Costing
By S.L. Uppal
Prepared By:
Khandakar Abdulla Al Mamun
Lecturer, Dept. of EEE, IIUC
International Islamic University Chittagong
Department of Electrical and Electronic Engineering
Lab Manual
Course Title: Electrical Service Design Sessional
Course Code: EEE-3612
Experiment No-2: Learn about different types of wire and wire Gauge.
Objectives:
1) To learn about different types of wire.
2) To learn about the measuring process of wire size using wire gauge.
Different types of wire:
1)
2)
3)
4)
5)
Rubber covered, taped, braided and compounded or V.I.R wire.
Lead alloy sheathed wires
Tough rubber sheathed (T.R.S) wire.
Weather-proof wires.
Flexible wires.
Size of Wire:
The size of wire depends on the maximum current carrying capacity of the wire. For measuring
the size of wire, two types of wire gauge system are commonly used. These are
I)
II)
British Standard wire gauge.
American Standard wire gauge.
In the British Standard, the diameter of the wire is measure in Inches and area is SQ.inches, but
in the American Standard, the diameter of the wire measure in miles and area in circular miles.
There is a relation between British and American standard in measuring area of the wire.
Inches= 1000* miles
Square miles=circular miles *0.7854
Report:
1) Draw the different types of wire and their use.
2) Prove the relation between square miles and circular miles.
Reference Book:
Electrical Wiring, Estimating and Costing
By S.L. Uppal
Prepared By:
Khandakar Abdulla Al Mamun
Lecturer, Dept. of EEE, IIUC
International Islamic University Chittagong
Department of Electrical and Electronic Engineering
Lab Manual
Course Title: Electrical Service Design Sessional
Course Code: EEE-3612
Experiment No.-3: Learn about different types of wire jointing.
Objective:
1) To learn about different types of wire jointing with different types of wire.
Types of wire Jointing:
I)
II)
III)
IV)
V)
VI)
Married Joint
Single Branch Splice or a Tap joint.
Double Branch Splice
Tap joint for Stranded wires
Flexible cord splicing.
Pigtail joint
Method of jointing wire:
a)
b)
c)
d)
Remove insulation
Mechanically jointing the conductor.
Soldering the joint.
Tapping the soldered joint.
Report:
1) Write down a short description about different types of jointing.
2) Make Married joint using 7/0.29 wire and Tap joint using stranded wire.
Reference Book:
Electrical Wiring, Estimating and Costing
By S.L. Uppal
Prepared By:
Khandakar Abdulla Al Mamun
Lecturer, Dept. of EEE, IIUC
International Islamic University Chittagong
Department of Electrical and Electronic Engineering
Lab Manual
Course Title: Electrical Service Design Sessional
Course Code: EEE-3612
Experiment No.-4: Calculation of wire size using appliances rating.
Objective:
1) To learn about different types of appliance rating.
2) To learn about the calculation of wire size and its selection.
Appliance Rating:
Some appliance ratings are given which we used in our home.
Wire size calculation:
For calculating the wire size, we need to consider three essential points.
I)
II)
III)
Current carrying capacity.
Voltage drop.
Minimum permissible size.
Reference Book:
Electrical Wiring, Estimating and Costing
By S.L. Uppal
Prepared By:
Khandakar Abdulla Al Mamun
Lecturer, Dept. of EEE, IIUC
International Islamic University Chittagong
Department of Electrical and Electronic Engineering
Lab Manual
Course Title: Electrical Service Design Sessional
Course Code: EEE-3612
Experiment No.-5: Types and Installation of wiring systems.
Objective:
1) To learn about different types of factors for wiring.
2) To learn about methods of installing wiring.
Factors consider during wiring:
I)
II)
III)
IV)
V)
VI)
Durability
Safety
Appearance
Cost
Accessibility
Maintenance
Methods of installing wiring:
i)
ii)
iii)
iv)
v)
Cleat wiring
Casing Capping
T.R.S wiring
Metal Sheathed Wiring
Conduit Wiring.
Report:
1) Draw the diagram of different types of wiring system
2) Make a table to compare different types of wiring system
and suggest with system is better.
Reference Book:
Electrical Wiring, Estimating and Costing
By S.L. Uppal
Prepared By:
Khandakar Abdulla Al Mamun
Lecturer, Dept. of EEE, IIUC
International Islamic University Chittagong
Department of Electrical and Electronic Engineering
Lab Manual
Course Title: Electrical Service Design Sessional
Course Code: EEE-3612
Experiment No.-6: Learn about Lighting Accessories.
Objective:
1) To learn about different types of lightning accessories and use.
1) Switches:
I)
II)
III)
IV)
V)
VI)
VII)
VIII)
IX)
X)
Surface switches or tumbler switch.
Flush switches
Pull switches or Ceiling switches
Grid switches
Architrave switch
Rotary snap switch.
Push button switch.
Iron clad water-tight switch.
Industrial iron-clad switch
Quick break knife switch
2) Lamp Holder:
I)
II)
III)
IV)
Pendant holder
Batten holder
Screwed holder
Water-tight pattern
3) Ceiling Roses
4) Socket Outlet:
I) Two pin Socket
II) Three pin Socket
5) Plug:
I. Two pin Plug
II. Three pin Plug
6) Terminal Block
Reference Book:
Electrical Wiring, Estimating and Costing
By S.L. Uppal
Prepared By:
Khandakar Abdulla Al Mamun
Lecturer, Dept. of EEE, IIUC
International Islamic University Chittagong
Department of Electrical and Electronic Engineering
Lab Manual
Course Title: Electrical Service Design Sessional
Course Code: EEE-3612
Experiment No-7: Learn about internal wiring system and Lamp Circuits.
Objective:
1) To learn about the application of one way and two ways switches.
2) To learn about different types of wiring system for controlling lamp and other appliances.
One way switches: One way switch have two points to connect. Using One way switch only one
appliance can be controlled and the appliance may be in ON or OFF condition
Two way switches: Two way switches have three points to connect.Using two way switch two
appliance can be controlled. In terms of ON condition one appliance is running and other
appliance is off. When we reverse the switch condition, the running appliance is in OFF
condition and other appliance is in ON condition.
For wiring, three fundamental systems should be considered. These are
i)
ii)
iii)
Looping-in system
Tree system
Ring system
Lamp circuit wirings system:
i)
ii)
iii)
iv)
v)
Simple Circuits
Series Circuits
Master Switch Circuits
Pilot Circuits
Miscellaneous Circuits.
Reference Book:
Electrical Wiring, Estimating and Costing
By S.L. Uppal
Prepared By:
Khandakar Abdulla Al Mamun
Lecturer, Dept. of EEE, IIUC
International Islamic University Chittagong
Department of Electrical and Electronic Engineering
Lab Manual
Course Title: Electrical Service Design Sessional
Course Code: EEE-3612
Lab Work:
Simple Lighting Circuit:
Master Switch Circuit:
Reference Book:
Electrical Wiring, Estimating and Costing
By S.L. Uppal
Prepared By:
Khandakar Abdulla Al Mamun
Lecturer, Dept. of EEE, IIUC
International Islamic University Chittagong
Department of Electrical and Electronic Engineering
Lab Manual
Course Title: Electrical Service Design Sessional
Course Code: EEE-3612
Experiment No-8: Familiarization with the symbol for building wiring.
Objective:
1) To learn about different types of symbol for sketching wiring diagram of a building.
Symbol of conduit Layout and fitting and fixture:
Reference Book:
Electrical Wiring, Estimating and Costing
By S.L. Uppal
Prepared By:
Khandakar Abdulla Al Mamun
Lecturer, Dept. of EEE, IIUC
International Islamic University Chittagong
Department of Electrical and Electronic Engineering
Lab Manual
Course Title: Electrical Service Design Sessional
Reference Book:
Electrical Wiring, Estimating and Costing
By S.L. Uppal
Course Code: EEE-3612
Prepared By:
Khandakar Abdulla Al Mamun
Lecturer, Dept. of EEE, IIUC
International Islamic University Chittagong
Department of Electrical and Electronic Engineering
Lab Manual
Course Title: Electrical Service Design Sessional
Reference Book:
Electrical Wiring, Estimating and Costing
By S.L. Uppal
Course Code: EEE-3612
Prepared By:
Khandakar Abdulla Al Mamun
Lecturer, Dept. of EEE, IIUC
International Islamic University Chittagong
Department of Electrical and Electronic Engineering
Lab Manual
Course Title: Electrical Service Design Sessional
Reference Book:
Electrical Wiring, Estimating and Costing
By S.L. Uppal
Course Code: EEE-3612
Prepared By:
Khandakar Abdulla Al Mamun
Lecturer, Dept. of EEE, IIUC
International Islamic University Chittagong
Department of Electrical and Electronic Engineering
Lab Manual
Course Title: Electrical Service Design Sessional
Course Code: EEE-3612
Experiment No-9: Learn about the conduit and fitting fixture drawing system of different
rooms.
Objective:
1) To learn about the drawing process of single/double rooms.
Drawing of single room:
1) Fitting and Fixture layout:
2) Symbol Description:
Reference Book:
Electrical Wiring, Estimating and Costing
By S.L. Uppal
Prepared By:
Khandakar Abdulla Al Mamun
Lecturer, Dept. of EEE, IIUC
International Islamic University Chittagong
Department of Electrical and Electronic Engineering
Lab Manual
Course Title: Electrical Service Design Sessional
Course Code: EEE-3612
3) Conduit layout:
4) Conduit size and symbol description:
C1 = 2 X 1.5 mm2
Reference Book:
Electrical Wiring, Estimating and Costing
By S.L. Uppal
Prepared By:
Khandakar Abdulla Al Mamun
Lecturer, Dept. of EEE, IIUC
International Islamic University Chittagong
Department of Electrical and Electronic Engineering
Lab Manual
Course Title: Electrical Service Design Sessional
Course Code: EEE-3612
5) Switch Board Diagram:
Drawing of a double room:
1) Fitting and fixture:
Reference Book:
Electrical Wiring, Estimating and Costing
By S.L. Uppal
Prepared By:
Khandakar Abdulla Al Mamun
Lecturer, Dept. of EEE, IIUC
International Islamic University Chittagong
Department of Electrical and Electronic Engineering
Lab Manual
Course Title: Electrical Service Design Sessional
Course Code: EEE-3612
2) Symbol Description:
3) Conduit layout:
Reference Book:
Electrical Wiring, Estimating and Costing
By S.L. Uppal
Prepared By:
Khandakar Abdulla Al Mamun
Lecturer, Dept. of EEE, IIUC
International Islamic University Chittagong
Department of Electrical and Electronic Engineering
Lab Manual
Course Title: Electrical Service Design Sessional
Course Code: EEE-3612
4) Switch Board Diagram:
Reference Book:
Electrical Wiring, Estimating and Costing
By S.L. Uppal
Prepared By:
Khandakar Abdulla Al Mamun
Lecturer, Dept. of EEE, IIUC
International Islamic University Chittagong
Department of Electrical and Electronic Engineering
Lab Manual
Course Title: Electrical Service Design Sessional
Course Code: EEE-3612
Experiment No-10: Learn about the conduit and fitting fixture drawing system of a house.
Objective:
1) To learn about the some precaution before drawing a building wiring
2) To learn about the drawing process of a house.
Some points related to Drawing:
•
5A receptacle points can be a three pin or two pin points, but a 15A receptacle point is
always a three pin point.
•
While designing a single storied building, we are always seeing the conduits going down. So
‘conduit going down’ mark should be placed after each conduit termination.
•
In fittings and fixture diagram fluorescent lights must be small in length compared to the
diameter of ceiling fan.
•
Conduits must be connected to the point of appliance’s electrical connection. Not to
appliance’s outside edge. As,
Wrong
Reference Book:
Electrical Wiring, Estimating and Costing
By S.L. Uppal
Right
Prepared By:
Khandakar Abdulla Al Mamun
Lecturer, Dept. of EEE, IIUC
International Islamic University Chittagong
Department of Electrical and Electronic Engineering
Lab Manual
Course Title: Electrical Service Design Sessional
Course Code: EEE-3612
•
Any size of conduits can be used but only those available to the market have to be used.
•
5A components are driven by 1.5 mm2 wires and 15A components from 4 mm2. 2.5 mm2
wires are also used to drive some instruments but it is usual practice to use 4 mm2 wires for high
current rated instruments. 2.5 mm2 wires are generally used to connect switchboards if a lot
of load is connected to the switchboard and also for switchboard to distribution board
connection.
•
Wire should be drawn from distribution board to each switchboard. It is not
necessary to draw wires to every switchboard from distribution board, if there are several
interconnected switchboards then only one needs to be connected to the distribution board. In
this way several group of switchboards are made and each group is connected to the
distribution board.
Some general concepts about a conduit layout:
•
There should be as small number of cross points of conduits as possible.
Wire cross sections
are expressed as
this
•
If more than one conduit is to be placed in a room then 90o alignment between the conduits
should be kept as long as possible.
•
Prime target of conduit layout is to use least length of conduit not least number of them.
•
There is no need to place a separate conduit for two switchboard interconnection.
Any other conduits can be used to take the connecting wire.
•
Wires are cheaper than conduits, so there should be no law about how much wire is need in
a conduit layout.
Reference Book:
Electrical Wiring, Estimating and Costing
By S.L. Uppal
Prepared By:
Khandakar Abdulla Al Mamun
Lecturer, Dept. of EEE, IIUC
International Islamic University Chittagong
Department of Electrical and Electronic Engineering
Lab Manual
Course Title: Electrical Service Design Sessional
Course Code: EEE-3612
Fitting and fixture:
Reference Book:
Electrical Wiring, Estimating and Costing
By S.L. Uppal
Prepared By:
Khandakar Abdulla Al Mamun
Lecturer, Dept. of EEE, IIUC
International Islamic University Chittagong
Department of Electrical and Electronic Engineering
Lab Manual
Course Title: Electrical Service Design Sessional
Course Code: EEE-3612
Conduit layout:
Reference Book:
Electrical Wiring, Estimating and Costing
By S.L. Uppal
Prepared By:
Khandakar Abdulla Al Mamun
Lecturer, Dept. of EEE, IIUC
International Islamic University Chittagong
Department of Electrical and Electronic Engineering
Lab Manual
Course Title: Electrical Service Design Sessional
Course Code: EEE-3612
Switch Board Diagram:
Reference Book:
Electrical Wiring, Estimating and Costing
By S.L. Uppal
Prepared By:
Khandakar Abdulla Al Mamun
Lecturer, Dept. of EEE, IIUC