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Unit 3- Schematic Symbols

Unit 3- Schematic Symbols. EET 110 Electronics Survey I. Topics to Cover. Types of representations Symbols for blueprint drawing Symbols for electrical schematics. Representations. Prints Clearly show Types of electric devices and conductors Where they are located

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Unit 3- Schematic Symbols

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  1. Unit 3- Schematic Symbols EET 110 Electronics Survey I

  2. Topics to Cover • Types of representations • Symbols for blueprint drawing • Symbols for electrical schematics

  3. Representations • Prints • Clearly show • Types of electric devices and conductors • Where they are located • How they are connected to each other • Supplied by builder, archetect, owner or electrician

  4. Representations-Prints S

  5. Representations (cont.) • Schematics • Clearly show • Types of devices and conductors • Where they should be located • Electrical Connections • Typically for controls or equipment • Provided by engineer, manufacturer

  6. Representations-Schematics Source

  7. Representations (cont.) • Pictorials • Clearly show • Types of devices and conductors • Where they should be located • How they are connected together • Electrical connections • Detail inside each box • Not used in industry due to complexity

  8. Representations-Pictorial

  9. Junction Box • Commonly Called a J-Box • Used for: • Code requires all splices in a box • Saves labor • Saves time • Saves cost

  10. Junction Box Print Schematic Pictorial J

  11. Lamp Holder Print Schematic Pictorial L

  12. Pull Switch Print Schematic Pictorial S

  13. Duplex Convenience Receptacle. Print Schematic Pictorial

  14. Split Duplex Convenience Receptacle. Print Schematic Pictorial S

  15. Convenience Receptacle other than Duplex Print Schematic Pictorial 3 3 Number indicates the number of receptacles (1, 3, etc.)

  16. Weatherproof Receptacle Print Schematic Pictorial WP WP

  17. 240 V Receptacle Print Schematic Pictorial

  18. Range Receptacle Print Schematic Pictorial R R

  19. Drier Receptacle Print Schematic Pictorial D D

  20. Ground Fault Circuit Interrupter • GFCIs open if current leakage to ground exceeds .006 A • Normally the current going to the appliance (hot) and the current returning to the source (neutral) are equal • Any fault grater than .006A opens and deenergizes the circuit.

  21. GFCI Print Schematic Pictorial GFCI GFCI

  22. Floor Receptacle Print Schematic Pictorial

  23. Push Button Switches Print Schematic Pictorial S Normally Open Normally Closed

  24. SPST– 2 way Print Schematic Pictorial S

  25. SPDT– 3 way Print Schematic Pictorial S3

  26. DPDT– 4 way Print Schematic Pictorial S4

  27. Buzzer Print Schematic Pictorial

  28. Outside telephone Print Schematic Pictorial

  29. Interconnecting Telephone Print Schematic Pictorial

  30. Battery-- Source Print Schematic Pictorial

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