UNIVERSAL COLLEGE OF

ENGINEERING & TECHNOLOGY

Second Shift Polytechnic College, Code: 607
Approved by AICTE New Delhi, Affiliated to SBTET, Amaravathi.

Electrical Workshop & Wiring Practice Laboratory

LAB RECORD
Lab Code: EE-108 (C-20)

Department of Electrical and Electronics Engineering

Universal College of Engineering & Technology

Promoted by: The Diocese of Guntur Society, Guntur.
Perecherla, Narasaraopet Road, Medikonduru (M), Guntur – 522 438.
 UNIVERSAL
COLLEGE OF ENGINEERING & TECHNOLOGY
(Approved by AICTE New Delhi, Affiliated to SBTET, Amaravathi)
Perecherla, Medikonduru (M), Guntur – 522 438.

Redg. No.

CERTIFICATE
This is to certify that the Bonafide Record of the Laboratory work done by

Mr. / Ms. / …………………………………………………………………………….

of Diploma …………….. Year…………………Semester in ………………………

Branch has completed………….. Experiments in ……………………………………

Laboratory during the Academic Year 20 - 20

Signature of the Faculty-in-charge Signature of the Head of the Department

Submitted for the SBTET Examination held on …………………….

Internal Examiner External Examiner

 INDEX
S. Page Signature of the
Date Name of the Experiment Marks
No. From To Faculty
 INDEX
S. Page Signature of the
Date Name of the Experiment Marks
No. From To Faculty
 DO’S AND DON’TS IN THE LAB
DO’s:-
1. Avoid contact with energized electrical circuit.
2. While handling any equipment, be sure that hands are dry and when possible wear
nonconductive gloves and shoes with insulated soles.

3. If water or any chemical is spilled on to equipment, shut off power at the main switch or
MCB and unplug the equipment.

4. If an individual comes in contact with a live electrical conductor, do not touch the
equipment, wire or person. Shut off power at the main switch or MCB.

5. Select proper range of meters and type (AC, DC) of the supply.
6. Be sure you understand the function and wiring of an instrument before using it in the circuit.
7. Students should carry notes and records completed in all aspects and get it verified by the
teacher.

8. The connections done should be checked by the teacher in charge/ technical

assistant before switching ON the supply.

9. All patch cords and stools should be put back to proper position after completion of the
experiment.

10. After completion of the experiment, components must be submitted properly to the lab in-
charge.

11. Always wear shoes without any conducting material.

12. Be punctual, maintain discipline & silence.

13. After completion of Experiment, return the bread board, trainer kits, wires, CRO probes
and other components to lab in-charge.

14. Note the working range of electrical parameters of the machine and concern equipments
/measuring device.
DON’Ts:-

1. Don’t exceed the permissible values of Current, Voltages and /or speed of any machines,
apparatus, load etc.
2. Don’t make circuit changes or perform any wiring when power is on.

3. Don’t switch ON the supply without verifying by the Staff Member.

4. Don’t leave the lab without the permission of the Lab In-Charge.

5. Don’t use any machine if there is a smoke, spark.

 ELECTRICAL WORKSHOP &WIRING PRACTICELABORATORY

Coursecode Course title No. of Total Marks Marks for

periods/ no.of for FA SA
week periods
ELECTRICAL WORKSHOP
EE-108 & WIRING PRACTICE 06 180 40 60
LABORATORY

S.no Chapter Title No.of CO’S Mapped

Periods
1 Wiring tools and 15 CO1
Accessories
2 Electrical Wiring Joints and Soldering 18 CO2
Practice
3 Lamp Circuits 36 CO2
4 Earthing 15 CO3
5 DC and AC circuits 21 CO4
6 Resistance Measurement 18 CO5
7 Capacitance 21 CO5
Measurement
8 Battery voltage 15 CO5
measurement
9 Test and repair the 21 CO5
Domestic appliances
TOTAL 180

1) To familiarise with the knowledge of different wiring tools used in

electricalwiring
Course objectives 2) To know the etiquette of working in the domesticwiring
3) To identify and rectify the simple faults that can occur in
domesticappliances

Understanding various tools and know their

CO1 EE-108.1
usage
Perform different joints, Soldering practice and
CO2 EE-108.2 execute different wiring circuits
Course outcomes
CO3 EE-108.3 Perform methods of earthing
CO4 EE-108.4 Identify the difference between DC and AC
Measurement and Calculation of electrical
parameters like resistance, capacitance, battery
CO5 EE-108.5
voltage and testing and repairing of domestic
applications.
LEARNING OUTCOMES

Wiring Tools andAccessories

1.1 Identify the following electrical wiring tools with respect to

i)Size ii)Shapeiii)Purposeiv)Speedv) Use
a) Screw drivers
b) Pliers
c) Drilling machines & DrillingBits.
d) Rawl plug jumper, andpoker
e)Voltage/linetester
f) Splicers (insulationremover)
g)Standard Wiregauge

1.2 Identify different types of Electrical Wiring accessories with respect to

i)Size ii)Shape iii)Purpose iv)Use.
a) Switches
b) Ceilingroses
c) Lamp Holders andAdopters
d) Sockets
e) Plug
f) Fuses

1.3 Identify different types of main switches with respect to

i)Rating ii)Purpose iii)Use.
SP,DP mains, TP,ICDP, ICTP, SPDT, DPDT, TPDT, Changeover-Knife type,
Rotary,Micro, Modular switches, 2-pole and 3-pole MCBs

1.4 Study different types of wires and cables (1/18,3/20,7/20) with respect to sizes
rating, purpose and useetc

Electrical WiringJoints and Soldering Practice

2.1 Prepare Straight joint/ Marriedjoint

2.2 Prepare Tjoint
2.3 Prepare Western unionjoint
2.4 Prepare Pigtailjoint
2.5 Femialirisation to use soldering tools and components
2.6 Soldering simple electronic circuits on PCB

LampCircuits

3.1 Make a circuit with One lamp controlled by one switch with PVC surface conduitsystem
3.2 Make a circuit with Two lamps controlled by two switches with PVC surface
conduitsystem
3.3 Make a circuit with One lamp controlled by one switch and provision of 2/3-pinsocket.
3.4 Make a circuit for Stair casewiring
3.5 Make a circuit for Godownwiring
3.6 Control two Lamps by Series - Parallel connection using one 1-way switch &
two 2-way switches with PVC surface conduitsystem.
3.7 Controltwosub-circuitsthroughEnergymeter,MCB’sandtwo1-wayswitches.
 3.8 Prepare switch board with star delta starter, MCB, Pilot lamps for 3 phasemotor
3.9 Control and practice the wiring for FluorescentLamp
3.10 Connect Computer by main switch board with a miniature circuitbreaker.

Earthing

4.1 Prepare PipeEarthing.

4.2 Prepare PlateEarthing.

DC and ACcircuits

5.1 Demonstrate unidirectional current flow with 12 Vbattery

5.2 Determine polarity using a Voltmeter/LED
5.3 Demonstrate AC using a Low voltageTransformer
5.4 Practice Series and Parallel connection ofLamps
5.5 Practice Bright and Dim light arrangement (using a series
Lamp/using a Diode)

Resistancemeasurement

6.1 Identify different types ofresistors

6.2 Calculate Resistance by its colourcode
6.3 Measuring the resistance usingmultimeter
6.4 Connecting resistors in series and parallel and measuring the resistance
usingmultimeter6.5 Practice Rheostatconnections

CapacitanceMeasurement

7.1 Identify different types ofcapacitors

7.2 Find the value and specifications of capacitor from Color code and Valueprinted
7.3 Investigate the effect of connecting capacitors in series andparallel
7.4 Testing the capacitor using multimeter

Battery voltagemeasurement

8.1 Measurement of Battery Voltage using Voltmeter andMultimeter

8.2 Connecting batteries in series and parallel and observing the output voltage using
Voltmeter andDMM.

8.3 Measurement of current supplied by Battery using Ammeter and Multimeter with
Rheostat as load.

Test and repair of the Domesticappliances

9.1 Testing and repair of electricheater

9.2 Testing and repair of iron box and other domesticappliances
 CO-PO/PSO MATRIX

CO No PO1 PO2 PO3 PO4 PO5 PO6 PO7 PSO1 PSO2 PSO3
EE-108.1 3 1 3
EE-108.2 3 2 1.5 3
EE-108.3 3 1.5 3 1.5
EE-108.4 3 3
EE-108.5 3 2 1 3 1
Average 3 1.5 1.5 2 1.25 3 1.25
3-Strongly Mapped 2- Moderately Mapped 1- Slightly Mapped

Note:
The gaps in CO and PO mapping will be achieved by one or more appropriate activities from the
following:
(i) Assignments (ii) Tutorials (iii) Seminars (iv) Guest Lectures (v) Group Discussions (vi) Quizzes
(vii) Industrial Visits (viii) Tech Fests (ix) Mini Projects (x) Library Visits

Competencies to be achieved by the Student

S.No Experiment title Competencies

Handle the differentwiring Identify the size and specifications of various tools
used for electricalwiring.
a) tools andaccessories  Understand the usage of the standard wiregauge.
1 Identify the type, size and specifications of DP
b) selectswitches,andMCB’s mains,

c) Identify wiresandcables as
per the requirements of
theload.
2.1 To prepare a Straight  Identify the size of thecable
joint/Married joint using a  Perform splicing of Insulationproperly.
7/20 Al. Cable  Perform Straight joint/Marriedjoint

2.2 To prepare a T joint using a Insert the leads of the wires properly as per the
7/20 Al. Cable sketches.
 Twist the wiresproperly.
2.3 To prepare a Western union  Overlap the two wiresproperly
joint using a single strand Al.  Twist the binding wiresproperly
Cable
2.4 To prepare a Pig tail joint  Place the wires inV-shape.
using a single strand Copper  Twist the wires in clock wisedirection.
Cable
2.5 To Femialirise various  Identifying Soldering gun, flux, lead
soldering tools and
components
2.6 To solder simple electronic  Draw the layout of circuit
circuits on PCB  Carefully Soldering the circuit on PCB.

To control one lamp by one 1-  Draw wiringdiagram

3.1 way switch with PVC surface  Identify the size of cable, PVC pipe, type of1-way
conduit wiring system switch and lampholder.
 Make Connections as per WiringDiagram
 Draw wiringdiagram
 Handle the screw driver, electrician Knife, line
To control two lamps by two tester to fix the PVC pipe using saddles and
3.2 1-way switches with PVC junctionboxes.
surface conduit wiring system  Select colour and length of wire for phase and
neutral
 Switch on the supply after making of the
connections
 Disconnect the circuit aftertesting.
3.3 To control one lamp and 2/3  Connect 2/3 pin socket properly with respect to
pin socket by two1-way phase, neutral andearth.
switches with PVC surface  Connect phase wire throughswitches.
conduit wiring system
 Select two 2-wayswitches
3.4 Stair-case wiring  Connect 2- way switches as per circuitdiagram.
 Test with 1-phase, 230V, 50 Hz supply to the
circuit connected through ICDPswitch.
 Draw wiringdiagram
 Connect the circuit as per thediagram.
3.5 Godown wiring scheme  Observe sequence of operation ofswitches
 Test with 1-phase,230 V,50 Hz supply to the
circuit, neutral wire to the bottom point of the
1- way switch and phase to the first point of
lamp holder
 Select colour and length of wire for phase and
neutral.
3.6 Series-Parallel connection  Make connections as per wiringdiagram.
 Draw wire through PVC pipeproperly
 Observe glow intensity of lamps for series and
parallelconnections
 Draw wiringdiagram.
 Identify the size of cable,1-way switch, PVC pipe,
MCB, capacity of Inverter andSocket
Control two sub circuits  Read the specifications of MCB, capacity of
3.7 through Inverter andSocket
Energymeter,MCB’sandtwo1-  Make connections as per wiringdiagram.
way switches  Draw wire through PVC pipeproperly.
 Connect supply to Inverter through MCBproperly.
 Select appropriate socket with switchcontrol.
 Make earth wire connections for requiredpoints.
  Select the size of cable, PVC pipe, star-delta
starter, MCB and lampholder
Prepare switch board with  Make connections as per wiringdiagram.
3.8 star delta starter, MCB, Pilot  Draw wire through PVC pipeproperly.
lamps for 3 phase motor  Draw wire of the 3-phase to the motor through
star-delta starter.
 Test with 3-phase, 415 V, 50 Hz supply to the
circuit connected through ICDPswitch.
 Test by changing any two phases of inputsupply

 Make connections as per wiringdiagram.

3.9 Wiring practice of fluorescent  Connect top point and bottom point of the
lamp choke to tube lightproperly.
 Note the importance and working ofstarter.
 Draw wiringdiagram.
 Identify the size of cable, 1-way switch, PVC
pipe, MCB andSockets
Connect computer by main  Read the specifications of MCB andSockets
3.10 switch board with a miniature  Make connections as per wiringdiagram.
circuit breaker.  Connect supply to Computer through MCB
properly.
 Select appropriate sockets with 1-way switch
control.
 Make earth wire connections for requirepoints.
4.1  Draw earthing diagram withspecifications.
Prepare Pipe Earthing  Select suitable GI pipes ,GI wire reducing socket
and funnel with wiremesh.
 Preparetheearthpitof2.5mbelowthesurface
of the ground.
 Place Earth pipe in verticalposition.
 Draw GI wire to the earthing pipe fastened with
bolts &nuts.
 Fix the funnel with wire mesh at the top of GI
pipe.
 Pour sand, char coal and salt in alternate layers of
about 15 cm around the earthpipe.
 Test the earth resistance withMegger
4.2  Draw Earthing diagram withspecifications
 Select suitable GI plate, GI wire and funnel with
wiremesh
 Prepare the earth pit of 1.5 m below the surface
of the ground
Prepare Plate Earthing  Place Earth plate in verticalposition
 Draw GI wire to the GI pipe fastened to GI plate
/ copper plate with bolts &nuts.
 Pour sand, char coal and salt in alternate layers
of about 15 cm around the earthpipe.
 Test the earth resistance withMegger.
 Verify the earth resistance.
 5.0 Demonstrate difference  Connect DC source and measure V &I
between DC and AC  Connect proper AC source and measure V&I
 Makeinferences.
6.0 Practice Resistance  Identifying resistor based on the colourcode.
measurement  Measuring resistance using Mmultimeter.
7.0 Practice Capacitor  Identifying capacitor based on the colourcode.
measurement  HandlingMultimeter.
8.0 Practice Battery voltage  HandlingMultimeter
measurement  HandlingRheostats

 Inspect the appliancevisually.

 Check for anydiscrepancies.
 Perform the disassemblingoperation
9.0 Testing and repair of domestic  Test the inner parts for anyfaults
appliances  Rectify the faults if any.
 Replace the parts ifnecessary.
 Perform theassembling.
 Test theDomestic appliance for proper
functioning.

Note:1.Every student has to bring insulated tool kit and follow the general safety precautions
throughout the labsessions
2. Should not touch the live terminals.
 UNIVERSAL COLLEGE OF ENGINEERING & TECHNOLOGY
Promoted by: The Diocese of Guntur Society, Guntur.
Second Shift Polytechnic College, Code: 607
Approved by AICTE New Delhi, Affiliated to SBTET, Amaravathi.
Perecherla, Narasaraopet Road, Medikonduru (M), Guntur – 522 438.

DAY TO DAY LAB ASSESSMENT MARKS SHEET A.Y.: 2021-22.

YEAR/SEM: I DEEE
NAME OF THE LAB: Electrical Workshop & Wiring Practice Laboratory (EE-108) DATE:
Experiment
Observation Record Viva Total Signature of the
S.No. Roll. No. Execution
(10M) (10M) (10M) (40M) Student
(10M)
1 21607-EE-001
2 21607-EE-002
3 21607-EE-003
4 21607-EE-004
5 21607-EE-005
6 21607-EE-006
7 21607-EE-007
8 21607-EE-008
9 21607-EE-009
10 21607-EE-010
11 21607-EE-011
12 21607-EE-012
13 21607-EE-013
14 21607-EE-014
15 21607-EE-015
16 21607-EE-016
17 21607-EE-017
18 21607-EE-018
19 21607-EE-019
20 21607-EE-020
Total No. of Students Present:
Total No. of Students Absent:

Name of the experiment:

Signature of the Lab In- charge Signature of the HoS Signature of the Principal