Electrical symbols

1. ELECTRICAL
SYMBOLS

2. Objectives
Identify electrical signs,
symbols, and data according
to the job specifications.
01
Interpret electrical
wiring plan.
02
Draw work plans according to
the specifications based on
the working/technical
drawing.
03

3. Electrical symbol is one of the most
important electrical principles that
engineers and technician should know and
understand for them to interpret electrical
installation of equipment, fixture and
correction stated in the plan.
INTRODUCTION

4. Aside from drawing
pictures or preparing
special photograph of
equipment and connections,
symbols are essential in
indicating the parts of an
electrical circuit.

5. ELECTRICALWIRINGPLAN

6. ELECTRICALSYMBOLS
-BATTERY
-SWITCHBREAKER
-AUTOMATICRESETBREAKER
-VOLTMETER

7. -TOGGLESWITCH,DPST
-TRANSFORMER, MAGNETICCORE
-BELL
-BUZZER,AC

8. -CONNECTEDWIRES,JUNCTION
-CROSSING, NOTCONNECTEDWIRE
-TRANSFORMER,BASIC
-GROUND,EARTH

9. -OUTLET,CEILING
-FUSE
-FIREALARMBOX
-OUTLET,WALL

10. -LIGHTINGPANEL
-POWERPANEL
-BRANCHCIRCUIT,CONCEALEDINWALL/CEILING
-BRANCHCIRCUIT, EXPOSED
-BRANCHCIRCUIT,CONCEALEDINFLOOR

11. -UNDERFLOORDUCTANDJUNCTIONBOX
-MOTOR
-CONTROLLER
-LAMP,STANDARD

12. -OUTLET,FLOOR
-CONVENIENCEOUTLET,DUPLEX
-FAN,WALL
-FAN,CEILING

13. S
S
-SINGLEPOLESWITCH
-DOUBLEPOLESWITCH
-PULLSWITCH,CEILING
-PULLSWITCH,WALL
-FLOURESCENT, CEILING

14. L
J
J
-FLOURESCENT,WALL
-JUNCTIONBOX,CEILING
-JUNCTIONBOX,WALL
-LAMPHOLDER,CEILING

15. -LAMPHOLDER,WALL
-LAMPHOLDER,CEILINGW/PULLSWITCH
-LAMPHOLDER,WALLW/PULLSWITCH
-SPECIALPURPOSEOUTLET

16. -TELEPHONE, SWITCHBOARD
-THERMOSTAT,WALL
-PUSHBUTTON

17. Draw the schematic diagram
of a lighting circuit. One
lamp Controlled by a single
pole switch with battery
source.
Application
17

18. Materials Needed
Pencil/ball pen
and short bond
paper.
Draw the circuit
instructed above
in a short bond
paper. Use the
proper symbols
for every part
of the circuit.
Procedures:
18

19. 19
Assessment Criteria
Dimensions Points
1. Use of proper electrical symbols 10
2. Accuracy of connections 5
3. Speed 5
TOTAL 20 points

20. Whatistheimportanceof
electricalsymbols?
GENERALIZATION

21. EVALUATION

22. ASSIGNMENT: Drawthewiring
diagramofyourhouse
usingthiselectrical
symbols.Useashort
bondpaper.

23. THANKYOU!!!