20 Electrical Plans

8/18/2019 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

7

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

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