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Electrical Planning #6

Electrical Planning #6 Electrical Working Drawings Electrical Working Drawings Complete electrical plans ensure that electrical equipment and wiring are installed exactly as planned If electrical plans are incomplete and sketchy, the installation depends upon the judgment of the electricians

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Electrical Planning #6

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  1. Electrical Planning #6 Electrical Plan

  2. Electrical Working Drawings Electrical Plan

  3. Electrical Working Drawings • Complete electrical plans ensure that electrical equipment and wiring are installed exactly as planned • If electrical plans are incomplete and sketchy, the installation depends upon the judgment of the electricians Electrical Plan

  4. Electrical Working Drawings • Designers should not rely upon electricians to design the electrical system, only to install it • Conversely, designers do not plan the position of every wire, • only the position and relationship of all fixtures, devices, switches, and controls Electrical Plan

  5. Electrical Working Drawings • This is done with the use of electrical symbols Electrical Plan

  6. Electrical Symbols • Hundreds of electrical symbols are used on floor plans • to describe what and where electrical elements will be installed • About sixty symbols apply to residential or light construction Electrical Plan

  7. Electrical Plan

  8. Electrical Plan

  9. Electrical Symbols • Although the wiring diagrams detail how a fixture is wired to a switch, • these diagrams are abbreviated on architectural plans Electrical Plan

  10. Electrical Plan

  11. Electrical Symbols • Some floor plans are so filled with dimensions, labels, and notes • that there is little space for electrical symbols • For this reason, • only the wall outlines are traced as an outline for preparing electrical plans Electrical Plan

  12. Electrical Symbols • On computer-generated floor plans, • this may involve deleting all but • the basic wall outline layer Electrical Plan

  13. To draw an electrical plan: Electrical Plan

  14. To draw an electrical plan: • #1 • Draw all electrical symbols on an abbreviated floor plan • This will prevent interfering with other lines, letters, and numbers on a complete floor plan • Electrical symbols are added to the plan in their appropriate location • If an exact location is required, this should be dimensioned or shown on a separate elevation or detail Electrical Plan

  15. To draw an electrical plan: • #2 • After all symbols are located on a plan, • connect the switches to fixtures • or devices by drawing a dashed and curved line • from each switch to the outlet, fixture, or device • that the switch controls Electrical Plan

  16. To draw an electrical plan: • #2 Cont’d • This line does not represent the actual wiring, only the control link Electrical Plan

  17. Room Wiring Drawings Electrical Plan

  18. Room Wiring Drawings • Typical architect5ural wiring diagrams identify the various electrical fixtures and devices and trace the control of each fixture to a switch • Wiring plans for various rooms and areas in a house are shown in Fig. 31-27 a-j Electrical Plan

  19. Electrical Plan

  20. Electrical Plan

  21. Electrical Plan

  22. Room Wiring Drawings • Because many kitchen appliances are heat-producing and therefore require high wattages, kitchen outlets are divided among several circuits • Otherwise, two or more appliances could overload a circuit when used at maximum load Electrical Plan

  23. Room Wiring Drawings • Utility rooms also require heavy-duty outlets for motor-driven and heat-producing appliances • Bedrooms, bathrooms, and closets require comparatively low wattage levels Electrical Plan

  24. Room Wiring Drawings • Stairs and halls present special problems in electrical planning • Three-way switches must be carefully located • to provide control at many locations • and thus eliminate unnecessary backtracking Electrical Plan

  25. Room Wiring Drawings • In drawing electrical plans on a CAD system, symbols can be called up from a symbol library and copied into the correct position • Electrical symbols are often added by using the layering function • This enables the symbols to be plotted in a different color or omitted totally from the floor plan Electrical Plan

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