Demo Teaching Electrical Installation Repollo.pptx

Learning Materials

1. Good Day! My Dear Students Welcome to our Class

2. Ms. Louella G. Repollo “Teacher Ella ”

3. Review

4. Warm Up Exercise

5. Our Activity is entitled: “ Sign ba’to “ Mechanics: The teacher will provide pictures to be shown at the materials provided about signs . At least 5 students who wants to participate may join. The student will simply guess the sign shown and if they answer correctly they will be given a reward or extra point for the next activity . Each students has a 30 seconds to answer.  

6. Warning 2. Voltage Danger 3.Wear Eye Protection 4. Electrical Hazard 5. Safety Alert

7. Pre-Test 

8. DIRECTIONS: Match the electrical symbols in Column A with their correspond description in Column B. Write your answer in your notebook.  

9. ______6. f. Warning   ______7. g. Voltage Danger   _____8. h.Wear Eye Protection   _____9. i . Electrical Hazard   ____10. j. Safety Alert

10. LET’S BEGIN the lesson!

11. Proper Housekeeping and safety practices ( rac servicing) Signs, Symbols and Data in Electrical Installation Maintenance.

12. O bjectives .   At the end of the lesson, the students should be able to: Analyze signs, electrical symbols and data Read and interpret electrical signs, symbols and data Analyze electrical components and materials based on electrical signs, symbols and data

13. When you hear the word signs and electrical symbols, what comes first into your mind?

14. What do you observe in the pictures?

15. Electrical symbols Are pictograms that represent the different electrical devices in an electrical wiring diagram . It is also use in drawing and interpreting electrical plans

16. Electrical Wring Diagram

17. 1. Conductor/ Wire - Use to connect components in a circuit   2. Connected wire     3. Wire not connected

18. 4. Switch - a device for making and breaking the connection in an electrical circuit   5. Push button - a push button switch is a type of switch consist of a simple electric mechanism or air switch mechanism to turn something on or off

19. 6. Fuse -a fuse is an electrical safety device that operates to provide overcurrent protection of an electrical circuit . 7. Cell - a single unit of device which converts chemical energy to electrical energy. It is usually light and compact as it has a single unit.

20. 8. Battery Consist of a group of cell 9. Duplex Convenience outlet - a receptacle in a wall or baseboard for connection to lamps or other electrical appliances.

21. 10. Weatherproof outlet - an outlet designed for installation outside the home.   11. Floor Outlet -an electrical outlet whose face in level with or recessed on the floor

22. 12. Male Plug - an electrical device with two or three pins that is inserted in a socket to make an electrical connection

23. 13. Incandescent Lamp - I ncandescent lamp, electricity runs through a wire inside the bulb and heats it up. When it's hot enough, it glows 14. Fluorescent Lamp - A fluorescent light bulb uses gas inside the bulb to light up: when electricity runs through it, it excites a mixture of gases, which are transformed into light.

24. 15. Resistor Reduces or limits the flow of current 16 . Capacitor -Use to store electrical charge

25. 17. Galvanometer -an electromechanical measuring instrument for electric current 18. Wattmeter -an instrument for measuring the electric power in watts in a circuit.    

26.   19. Antenna - an electrical device which converts power into radio waves and vice versa

27.   Class what comes first into your mind when you see this pictures?

28. Electrical Signs intended to alert and instruct people to avoid potentially hazardous condition. Knowing and understanding these electrical signs will help you operate your tools better and more safely.

29. 1. Safety alert -indicates that a person should observe extra awareness 2. Caution -indicates some precautionary measures against potential hazardous situation which, if not avoided, may result to a minor or moderate injury.

30. 3. Danger -indicates a hazardous situation which, if not avoided, will result in a death or serious injury . 4. Warning -indicates a potential hazardous situation which, if not avoided, could result in death or serious injury.

31. 5. Safety Instructions sign indicates specific safety-related instruction or procedures . 6. Electrical Hazard -indicates that electrical hazard is present in the area

32. 7 .Voltage danger -indicates high voltage in the area and surrounding equipment 8. Voltage Danger Read and Understand Instruction Manual -means that a person should make some reading before doing any activity

33. 9. Wear Eye protection indicates that a person should wear safety goggles or any related protection for the eyes . 10. Wear appropriate eye protection, hearing protection, and respiratory protection .

34. Summary !!!

35. Recap!!! ” Can you draw at least 3 symbols you have learned in the discussion and also state the name of the symbols .”

36. “What is the importance of d ifferent electrical Signs ?” Recap!!!

37. Performance Task/ Individual Activity Direction: Students will create a “flyers” about the awareness and importance of using signs and symbols in electrical installation and maintenance. Grades will be based from the rubrics provided below.  

38. RUBRICS

39. Quiz Directions: Choose the letter of your answer and write it in a ¼ sheet of paper . 1. What is the electrical symbols of switch?

40. 2. What is the electrical symbol of male plug?

41. It indicates that a person should observe extra awareness.

42. 4. These are pictograms that represent the different electrical devices in an electrical wiring diagram. a. Electrical Materials b. Electrical Supplies c. Electrical Signs c. Electrical Symbols 5. These are used to alert and /or instruct people on how to avoid to the potential that may cause injuries and damages. a. Electrical Materials b. Electrical Supplies c. Electrical Signs c. Electrical Symbols

43. Answers: 1. C 2. B 3. D 4. D 5 . C

44. ASSIGNMENT Do an advance reading about basic technical drawings, technical plans and schematic diagram. Also, bring all the materials needed for making the flyers for tomorrow.

45. Thank you for listening !!! Teacher Ella 😊