20 Electrical Plans
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Transcript of 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