Electrical Signs and Symbols in Electrical Wiring Plans

These are the common electrical symbols used in electrical wiring plan. These also include safety and wiring signs common in jobsites.

1. Electrical Installation and Maintenance Lesson 5:Electrical Signs and Symbols

2. OBJCTIVE 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 Interpret technical drawings and plan. Read blueprints of electrical plans, diagrams, and circuits

3. Where can you find the following icons?

4. ELECTRICAL SIGNS

5. ELECTRICAL SIGNS Your power tool with its manual may contain "WARNING ICONS" (a picture symbol intended to alert you to, and/or to instruct you how to avoid a potentially hazardous condition). Knowing and understanding these symbols will help you operate your tool better and more safely. Electrical signs and stickers alert students, workers, and visitors to electrical hazards in the area. Alerting workers to high voltage areas, electrical hazards, power lines and other electrical equipment in the area, can help prevent fires and injuries. Proper electrical signs can inform workers of the dangers in the area.

6. CAUTION CAUTION- Indicates some precautionary measures against potentially hazardous situations which, if not avoided, may result in minor or moderate injury

7. SAFETY ALERT Indicates that a person should observe extra awareness PROHIBITION - Means that any activity stated by the symbol is not allowed

8. DANGER - Specifies hazardous situation which, if not avoided, will result in serious injury or even death WARNING - specifies a potentially hazardous situation which, if not avoided, could result in a serious injury or even death

9. READ AND UNDERSTAND INSTRUCTION MANUAL means that a person should do some reading before doing any activity. WEAR EYE PROTECTION -indicates that a person should wear safety goggles or any related protection for the eyes

10. ELECTRICAL HAZARD Indicates that electrical hazard is present in the area VOLTAGE DANGER -indicates high voltage in the area and surrounding equipment

11. Can you recognize the following objects PUSHBUTTON MALE PLUG FUSE CONVENIENCE OUTLET

12. COMMON ELECTRICAL SYMBOLS

13. COMMON ELECTRICAL SYMBOLS Electrical Symbols are small drawings or pictograms used to represent various electrical devices in a diagram or plan of an electrical circuit. These symbols are used in sketching schematic diagrams and electrical plans for numerous types of electrical works. Practically any electrical fixture found in a house has a symbol that coincides to said fixture on an electrical wiring diagram These are very useful guide for an electrician or electrical contractor, thus, making the wiring easier to install as well.

14. LINE, WIRE OR CUNDUCTOR Material than brings electricity to the different parts of the electric circuit or system

15. TERMINAL

16. GROUND

17. LIGHTNING ARRESTER

18. SWITCH

19. Single Switch 2-Gang Switch 3-Gang Switch

20. PUSHBUTTON

21. CONVENIENCE OUTLET Single Duplex Triplex

22. FLOOR OUTLET

23. SPECIAL PURPOSE OUTLET

24. WEATHER-PROOF OUTLET

25. RANGE OUTLET

26. LIGHTING DEVICES INCANDESCENT LAMP FLUORESCENT LAMP

27. ELECTRIC METERS

28. VOLTMETER AMMETER GALVANOMETER

29. WATTMETER

30. KILOWATT-HOUR METER

31. BUZZER

32. BELL

33. LOUDSPEAKER

34. ANTENNA

35. SERVICE ENTRANCE

36. MALE PLUG

37. CIRCUIT BREAKER

38. FUSE

39. POWER PANEL BOARD

40. COMPONENTS CAPACITOR RESISTOR DIODE

41. STORAGE DEVICES CELL BATTERY

42. ELECTRICAL WIRING DIAGRAM

43. ELECTRICAL WIRING DIAGRAM The flow of current in a conductor or wire can be represented by diagram. There are two types of diagram: pictorial diagram and schematic diagram.

44. A. PICTORIAL DIAGRAM Pictorial diagram is a sketch of electrical circuit that shows the external appearance of each component. It is much like a photograph of the circuit and uses simple images of parts

45. B. SCHEMATIC DIAGRAM Schematic diagram is a sketch showing the components of the circuit using standard electrical symbols. It shows the actual number of components and how the wiring is routed but not the actual location.

46. TYPES OF CIRCUIT A circuit is a complete path for the flow of electricity from the source of current to the consuming device and back.

47. 1. SERIES CIRCUIT Series Circuit is a circuit in which lamps are arranged in a chain, so that the current has only one path to take. The current is the same through each load. Example of this is the Christmas lights. It consists of a number of bulbs that are connected side by side to meet the voltage requirement which is 220 volts for alternating current.

48. 2. PARALLEL CIRCUIT Parallel Circuit is a circuit in which lamps are connected across the wires. The voltage across each load on parallel circuit is the same. The advantage of using parallel circuit is that even if one of the lamps fails, still the remaining lamps will function.

49. ELECTRICAL PLAN Electrical plan is a graphical presentation of electrical wiring connections to install in a particular house or building. It indicates the position of electrical fixtures such as convenience outlets, switches, lightings, doorbells, and others to be installed.