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Electrical Symbols and Wiring Guide

Learn about electrical symbols including power supply, switch wiring, junction box, light socket, outlets, switches, and control circuits. Understand connections for single pole, double pole, three-way, and four-way switches.

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Electrical Symbols and Wiring Guide

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  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

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