55.Electrical symbol legend AutoCAD Blocks

– basic materials
– basic materials cont.
– lighting
– fluorescent strip fixture
– fixture designation
– fluorescent fixture
– circuit number
– nema starter size
– enclosure nema 1 unless noted
– fire alarm/detection system
– lightning protection system
– variable frequency drive
– direct digital control panel
– motor connection, number denotes horsepower
– electric duct heater
– power connection to equipment
– c3 = service entrance device
– b3 = distribution board device
– a3 = panelboard device
– cable tray
– junction box
– conduit seal-off fittings
– surge supressor
– clock receptacle
– special purpose receptacle, rating as noted
– lighting control time clock
– photocell, mounted on roof facing north
– ground bar
– duplex receptacle
– two duplex receptacles with common cover
– gfi receptacle. wp denotes weatherproof cover.
– gfi receptacle mounted above counter
– duplex receptacle with top half switched
– duplex receptacle mounted above counter
– pedestal mounted receptacle
– twist lock receptacle
– duplex receptacle
– single pole key switch
– wall mounted occupancy sensor
– ceiling mounted occupacy sensor
– single pole switch with security locking key
– low voltage switch
– fan switch
– manual motor starter with overload heaters
– three-way switch
– four-way switch
– ar denotes amp rating of switch
– af denotes amp fuse size
– fused disconnect
– transformer
– automatic transfer switch
– branch circuit conduit exposed
– ground or ground rod as noted
– critical branch conduit
– life safety branch conduit
– equipment branch conduit
– conduit turning up
– conduit turning down
– conduit stub
– conduit continued
– flexible conduit
– existing to be removed
– existing to remain
– existing affected by this project
– future
– hid, fluorescent, or incandescent fixture
– fluorescent, or incandescent wall washer.
– battery pack with twin heads
– wall mounted exit light fixture
– flat roof mounted or mechanical
– thru-roof conductor
– class i main conductor cable
– class ii main conductor cable
– tee splice
– bonding plate
– pipe clamp for plumbing vent thru roof.
– air termination device
– ground terminal
– bonding conductor
– down conductor
– counterpoise conductor
– parapet mounted air terminal
– fire alarm annunciator panel – flush mounted
– fire alarm system conduit and wiring
– fireman’s elevator warning light
– fire alarm control panel
– fire alarm terminal cabinet
– electromagnetic door hold open device
– fireman’s phone jack
– cd = candela rating
– fire alarm speaker with strobe
– c = ceiling-mounted
– cd = candela rating
– cd = candela rating
– remote fire alarm with test switch
– input monitoring module
– supervised control relay
– r = return
– s = supply
– duct smoke detector
– manual pull station
– single pole switch (subscript indicates item controlled)
– single pole switch with pilot light
– single pole switch with weatherproof cover
– single pole switch with weatherproof locking cover
– manual motor starter with overload heaters and pilot light
– dimmer switch (1500 watts unless otherwise indicated)
– surge protection type (tvss) duplex receptacle
– floor outlet box and duplex receptacle with appropriate flange.
– floor outlet box with two duplex receptacles and one combination w/ voice/data outlet
– duplex receptacle with each half on separate circuit (breaker shall be two pole with common trip)
– duplex safety receptacle mount coverplates with spanner head screws
– simplex receptacle (ewc denotes electric water cooler. coordinate with ewc installer for mounting height)
– two duplex receptacles with common cover mounted above counter
– isolated ground duplex receptacle, (orange device)
– tick marks shown on any device represents receptacle connected to the emergency circuit (red device) typical for any device in legend
– plug-in strip with receptacles, 18″ o.c. unless otherwise indicated
– shunt-trip button – flush mounted unless otherwise noted nema 3r for exterior locations
– magnetic motor starter or contactor size as noted
– non-fused disconnect switch, size as noted nf denotes non-fused
– combination magnetic motor starter, size as noted 3 pole unless otherwise noted
– branch circuit panelboard, under 250 volts, surface mounted
– branch circuit panelboard, under 250 volts, flush mounted
– branch circuit panelboard, over 250 volts, surface mounted
– branch circuit panelboard, over 250 volts, flush mounted
– branch circuit conduit concealed above ceiling or in wall. conduit shall include phase, neutral and ground conductors as required for circuits (unless otherwise noted).
– branch circuit conduit concealed in slab, underground or under floor.
– lower case letter indicates control circuit switch leg
– fluorescent fixture diagonal shading denotes to light fixture connected to critical branch.
– fluorescent fixture diagonal shading denotes half of lamps connected to critical branch, other half to normal branch. (3 lamp fixtures shall have 2 lamps connected to critical, 1 lamp connected to normal).
– fluorescent fixture completely shaded denotes light fixture connected to life safety branch circuit.
– fluorescent fixture half shading denotes half of lamps connected to life safety branch, other half to normal branch. (3 lamp fixtures shall have 2 lamps connected to life safety, 1 lamp connected to normal).
– fluorescent wall mounted fixture with wall outlet box
– exit light fixture direction arrows as shown (shaded quadrant indicates face(s) of fixture)
– exterior light fixture with arms as shown on drawings
– track with track light fixture (triangles indicate quantity of light fixtures)
– ceiling smoke detector, photo-electric type unless otherwise noted
– e = elevator with recall contacts i = ionization
– duct smoke remote alarm indicating lamp, with test switch, wall mounted 72″ aff
– combination audible/visual notification device chime/flashing “fire” light
– combination audible/visual notification device
– visual signaling unit, wall mounted (no audio device)
– sprinkler tamper switch connection
– sprinkler waterflow switch connection
– electromagnetic door hold open device connection to closure/ holder
– electromagnetic door hold open device connection to closure/ holder includes detector
– ceiling heat detector 135° unless otherwise indicated.

I also suggest downloading Electric Symbols.

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