20 Electrical Plans

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    Electrical Plans

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    Electrical Plans• Displays all of the circuits and systems to be used

     by the electrical contractor during installation

    • Items to show on plans

     – all outlets – all light fixtures connected to switches

     – all switches connected to light fixtures

     – all miscellaneous and low voltage items

    • no connection necessary with low voltage items

     – power panel and electrical meter

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    Electrical PlansMethods used to show electrical systems on drawings –  1 Add-on eisting plans along with all other symbols! information!

    dimensions• common practice on simple floor plans

    • eliminates etra sheets and simplifies wor"ing drawings• sometimes ma"es drawings difficult to read

     –  # $eparate sheets for electrical information• common practice on comple floor plans

    • separates electrical information from other drawing data

    • re%uires time to duplicate floor plans unless &AD dwgs

    • adds more blueprints to set of wor"ing drawings

        s    e       f    o    r

         c      l    a

        s    s

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    Electrical Plans Eample

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    $i(e and Drafting the $ymbols

    As noted on handout )units gi*en below are full si(e units ta"enfrom the 1+ scale,

     –  $i(e of outlet symbol 1./0 diameter circle

     –  $i(e of light fiture symbol 1.0 diameter circle

     –  $i(e of fluorescent symbol 1./0 10 )+0/0 real si(e,

     –  $i(e of switch symbol 1./0 lettering

     –  $i(e of push button symbol 2.1+0 s%uare

     –  $i(e of electrical panel 2./0long and fill 1.# of wall

     –  $i(e of meter base! etc3 1.0 s%uare

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    4utlets

    • $ymbol

     – as shown on

     plan

    • 5all 6iew

     – finished state

    • Description

     – eplanation

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    Duple 4utlet with $witch

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    Appliance *s3 6oltage and $ymbol• 7efrigerator 1#8 *olts

    • $to*e #8 *olts

    • 9ood 1#8 *olts

    • 4*en #8 *olts

    • :arbage Disposal1#8 *olts

    • Dishwasher  1#8.#8 *olts

    9

    :D

    4

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    Appliance *s3 6oltage and $ymbol• &lothes washer 1#8 *olts

    • &lothes dryer #8 *olts

    • Air &onditioner 1#8.#8 *olts

    • 5ater heater #8 *olts

    • ;urnace1#8.#8 *olts

    A&

    59

    ;

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    $witches

    • $ingle $witch• 2-way $witch

    • -way $witch

    • Dimmer $witch• >imer $witch

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    Electrical $ymbols - Miscellaneous

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    Electrical &ode.Drafting Practice• Duple con*enience outlets )wall plugs, should be a

    maimum of 1#? apart3 &loser spacing is desirable!

    although economy is a factor3 &ode reads@ no point

    along a wall is further than +? from an outlet30

    • Duple con*enience outlets should be no more than

    +? from a corner 

    • >here should be a duple outlet in any usable wall

    space o*er #? long• Place a )one, duple outlet in a hallway

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    4utlet Placement Eample

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    Electrical &ode.Drafting Practice

    Bitchen .Cathroom areas – usable counter space of 1#0 greater re%uire an outlet

     – outlets are re%uired e*ery /0 of counter space )with new code

    tet is in error, – note mounting height for outlets abo*e counter )0,

     – special purpose outlets for garbage disposal! dishwasher!separate o*en! and hood

     – range outlet for electric range – :;I or :;&I protection for any outlets in rooms with a water

    source3

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    $witch.4utlets Eamples

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    $witching Eamples

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    $witching

    • $witch symbol and

    fiture are connected

    with a dashed line

    using a irregular

    cur*e

    • $ingle $witching

    •  2-5ay $witching

    • -5ay $witching

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    $witching an 4utlet

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    $witching a Porch

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    Electrical Plan Eample

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    $pecial ProFect Elect Plans )G8 Points,

    • Add electrical symbols and all electricalinformation to your plans@ – Foundation plan )2 light switch! one outlet and

    special purpose outlet for water heater,

     – First level floor plan )two eterior 5P outlets! lightsat all entrances! elect range w. hood abo*e! garbagedisposal! dishwasher outlet! and washer.dryer outlets,

     – Second level floor plan )ehaust fans in bathrooms! 2-way switch to 1st floor for stair light,

     – &omplete an electrical schedule (10 points) for all the

    symbols used similar to one shown in 9andout

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    Electrical$ymbol $chedule

    • Purpose of schedule

    is to identify anddescribe electricalsymbols used in theset of wor"ing

    drawings• &ategories

     – $ymbols

    – Descriptions