Electricity Lesson II

1. Electricity Lesson II Electrical Symbols EE

2. Electrical Symbols • Power Supply • Hot lead attaches to plain pole • Ground or neutral wire attaches to pole with inverted tree

3. Electrical Symbols B • Switch Wiring • color coded wires to complete the desired circuit • 5 conductor colors • Black, White, Red, • Blue, Yellow • Green safety ground W R Bl Y S

4. Electrical Symbols • Junction Box • All splices must be done within a box • If only splices are needed, it is called a junction box J

5. Electrical Symbols • Light Socket • socket where an incandescent light bulb is placed • power wire to dark screw • neutral wire to light screw L

6. Electrical Symbols • Duplex Outlet • household outlet with two receptacles • power wire to dark screws • neutral wire to light screws • can be split wired O

7. Electrical Symbols • Quadraplex Outlet • outlet with four receptacles • two duplex receptacles in one outlet box • may be split wired O

8. Electrical Symbols • Surface/Pendant Flourescent Fixture • Flourescent lights in the shop

9. Electrical Symbols • Recessed Flourescent Light Fixture • Flourescent lights in the Ag classroom R

10. Electrical Symbols • Single Pole Switch • connects or disconnects a circuit from one location in a 115 volt circuit • wire into hot side of 115 volt circuit • attach green safety wire S S

11. Electrical Symbols • Single Pole Switch Connections • 115 volt circuit • Switch is Off • Switch is On S S

12. Electrical Symbols • Double Pole Switch • connects or disconnects a 230 volt circuit from one location. • Wire into both hot leads of a 230 volt circuit 2 S2

13. Electrical Symbols • Double Pole Switch Connections • 230 volt circuit • Switch is Off • Switch is On 2 2

14. Electrical Symbols • Three Way Switch • usually used in combination with one or more additional switches in 115 volt circuits • controls a circuit from more than one location S3

15. Electrical Symbols • Three Way Switch Connections • 115 volt circuits • Switch knob left • Switch knob right

16. Electrical Symbols • Four Way Switch • used in combination with 2 three way switches in 115 volt circuits. • controls circuit from three or more locations. S4

17. Electrical Symbols • Four Way Switch Connections • 115 volt circuits • Switch knob left • Switch knob right

18. Electrical Symbols/Circuits L1 s1 S1 controls L1

19. Electrical Symbols/Circuits L1 s1 S1 controls L1

20. Electrical Symbols/Circuits Cu Screw B B L1 s1 W W Al Screw S1 controls L1

21. Electrical Symbols/Circuits Control light from two locations L1 S1 S2

22. Electrical Symbols/Circuits Control light from two locations L1 S1 S2

23. Electrical Symbols/Circuits Control light from two locations L1 S1 S2

24. Electrical Symbols/Circuits Control light from two locations Takes 2 Three Ways L1 S1 S2

25. Electrical Symbols/Circuits Control light from two locations Takes 2 Three Ways Cu Screw B B B L1 S1 S2 W W W Al Screw

26. Electrical Symbols/Circuits Control light from two locations Takes 2 Three Ways Cu Screw B B B L1 S1 R S2 W W W Al Screw

27. Electrical Symbols/Circuits Control a light from 3 locations S1 S2 S3 L1

28. Electrical Symbols/Circuits Control a light from 3 locations S1 S2 S3 L1

29. Electrical Symbols/Circuits Control a light from 3 locations S1 S2 S3 W W W W L1

30. Electrical Symbols/Circuits Control a light from 3 locations Takes two 3 ways & one 4 way S1 S2 S3 W W L1

31. Electrical Symbols/Circuits Control a light from 3 locations Takes two 3 ways & one 4 way B B B S1 S2 S3 W W W B W Cu Al L1 Screw Screw

32. Electrical Symbols/Circuits Control a light from 3 locations Takes two 3 ways & one 4 way B B B S1 R S2 R S3 W W W B W Cu Al L1 Screw Screw