electrical installation and maintenance ppt

kk

1. Prayer :

2. Electrical Installation and Maintenance 9

3. Extra Resources For Business Plans, Marketing Plans, Project Proposals, Lessons, etc 2

4. Objectives: ►Identify the parts of an electrical circuit. ►Install one bulb controlled by two 3-way switches in different location. ► Observe safety precautions while doing the task.

5. Vocabulary: switch – a device for making and breaking the connection of a circuit circuit breaker - a devce use to protect an electrical current from damage caused by short circuit

6. Vocabulary 3-way switch - used to control lights with two switches pole - indicates the number of circuits that one switch can control for one operation of the switch

7. vocabulary traveler - a traveler wire runs between the two 3-way switches, offering two potential pathways to complete the circuit and send power onward to the light fixture

8. VIDEO

9. Questions: From the video presented, can you name the parts of a circuit? What is the use of a 3- way switch ?

10. Activity: ►Each student will be given an activity sheet with a schematic diagram on how to connect the 3-way switch. ►The students try connect the schematic diagram with missing lines to form a complete circuit. ►Paste on the board the complete schematic diagram. 5

11. Question: 1. How will you connect the schematic diagram with missing lines to form a complete circuit?

12. Parts of a circuit: Load - Bulb Path - Wire Control - Switch Source - Outlet or Battery

13. Schematic Diagram of one lamp controlled by two 3-way switches in different locations using a circuit breaker

14. Actual Connection Diagram:

15. Line Diagram :

16. Demonstrate how to connect 3 way s wi tch using the simulator: A three-way switch is the type of switch that turns on the lights from both ends of a hallway . A pair of three-way light switches control one or more electric light fixtures from two locations such as from both ends of a staircase or hallway .

17. 1 1. How many terminals of a bulb ? 2. How many terminals that a single 3-way has ?

18. 2 3. How many terminals for all switches ? 4. How many terminals for a source ?

19. 3 5. How many terminals for a circuit breaker ? 6. How many terminals for the entire circuit?

20. Return Demonstration: ► Perform wiring installation using 3-way switches by pair. ► Follow the schematic diagram on the board. ► Observe safety precautions always while doing the task. 20

21. CRITERIA VERY GOOD GOOD FAIR NEEDS IMPROVEMENT 1. Accuracy 25% Lamp lights Lamp lights Lamp lights but flickers Lamp does not light 2. Quality 25% Wirings are installed and energized. Followed specifications. Wirings are installed and energized. Missed 1 specifications. Wirings are installed and energized. Missed 2 specifications. Wirings are installed and energized. Work is loose and not presentable. 3. Method 25% Followed procedures correctly, observed safety while working, and performed good housekeeping Followed procedure correctly, economical use of tools is followed; observed safety while working Incorrect usage of tools. Did not follow the required procedures 4. Speed 25% Submitted work 2 minutes ahead of time Submitted work on a given time. Submitted work 2 or more minutes after the given time. Unable to finish the work RUBRICS :

22. ASSESSMENT: Questions: How did you feel doing the task? When one part of a circuit is missing, can we call it a complete circuit?

23. Assignment: Please draw a schematic diagram of : 1. One bulb controlled by 2 three way switches and another bulb controlled by a single switch in different locations

24. Thank you so much for listening!!! God Bless Us All!