Report 6 (EEE111)

Title

:

INTRODUCTION TO WRITING INSTALLATION SYSTEM

Objective

: 1.

To understand the basic concepts of electrical power, earthing, distribution system and writing.

2.

To understand the writing diagram and wiring installation method for a lighting circuit.

3.

To understand thinking system connected from distribution fuse box (OFB).

4.

To understand the wiring of a one-way switch and two-way switch.

5.

To understand the inspection and testing method for a wiring circuit.

6.

To understand the steps and safety to power up the lighting circuit.

Introduction : Wiring system is an installation system that consists of conductor, theory insulator, mechanical protection and electrical accessories. A wiring system has to be planned to prevent loss to consumer. The system control efficiency and safety. Things that have to be considered as a choosing factor are described as follows: 1. 2. 3. 4. 5. 6. 7. 8. 9. Results

Cost for the installation Types of building ( wooden house / bricks ) Types of load to be installed Neatness of wiring ( aesthetic ) Environment ( eg. Temperature etc ) Time to finish the installation Changes / additions of circuits whenever needed Types of supply voltage Consumers / installation safety

:

Insulation test Continuity test Polarity test

Phase & Neutral Ω Phase

Phase & CPC Ω Neutral

Neutral & CPC Ω CPC

Phase √

Neutral √

CPC √

Discussion

Conclusion

:

In this experiment, student need to know that lighting circuit is a circuit that is used to provide lighting and is normally distributed to filament or discharge lamps (fluorescent). Other than lighting points, other loads may also be connected to the final lifting circuit. For example, ceiling fan etc. as long as the maximum load current is less than the rated current for the circuit. Parallel circuit are found in most household electrical wiring. In a parallel circuit, the connections are made so that every load will receive the same amount of voltage. For every load, the current is shared. This is done so that when an appliance is switch off, the other appliance can continue to operate. One-way switch is commonly used to control lighting or other loads from a location. Tow-ways switched are used to control system. Two-way switch has three terminals. One of it called ‘common’. The first common is for the life conductor from distribution fuse box (OFB), or from other switches. The second common is the second switch connected to the lamp / load. Other two terminals from first switch are connected to the other two terminals at the second terminal. Polarity test may be done with the supply ‘connected / energized’. Devices used to do polarity test in ‘unconnected’ condition are ‘ohmmeter or test bell’. Devices used to do polarity test in ‘connected’ condition are ‘test lamp or voltmeter’. :

From the experiment student were exposed details to understand the basics concept of electrical installation method, wiring diagram trucking system, wiring of a one-way switch and two-way switch the inspection. One-way switch is commonly used to control lighting or other loads from a location. Two-ways switched are used to control system. Two-way switch has three terminals. One of it called ‘common’. The first common is for the life conductor from distribution fuse box (OFB), or from other switches. The second common is the second switch connected to the lamp / load. Other two terminals from first switch are connected to the other two terminals at the second terminal. steps and safety. Lighting circuit is a circuit that is used to provide lighting and is normally distributed to filament or discharge lamps (fluorescent).

In the future, student should be more expose to the other electronic devices and component to gain more information and knowledge. Polarity test may be done with the supply ‘connected / energized’. Devices used to do polarity test in ‘unconnected’ condition are ‘ohmmeter or test bell’. Devices used to do polarity test in ‘connected’ condition are ‘test lamp or voltmeter’. Reference

:

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Lab book ( Electro-technology ) Lab partner Lecturer ( Pn. Mahizan Bt. Abd. Manan )