The ArchBlocks AutoCAD Electrical Library has electrical symbols for designing Lighting Plans and Electrical Plans that are required for CAD construction documents. You will also find CAD Blocks for Reflected Ceiling Plans and a basic Lighting Schedule in AutoCAD .DWG format to help you get started.
Simply choose an electrical category of symbols from the pull-down menu list. Next a dialog box appears showing all of the available symbols with a description in the left window. Choose the symbol you would like to insert and click on “OK”. Lastly rotate to the desired position in your AutoCAD. Electrical symbols – DWG: Free; AutoCAD platform 2007 and later versions. For downloading files there is no need to go through the registration process; It is forbidden to use our files on their websites and blogs, without specifying a link to our website – DwgFree.com. Some devices are represented by multiple symbols. For example, a relay may have a coil symbol and a number of contact symbols. AutoCAD Electrical uses 'parent' and 'child' symbols to create this relationship between symbols that represent a single device. In the relay example, the coil is the parent symbol and the contacts are child symbols.
Scroll down to see a complete preview of all the Electrical CAD blocks included in this library.
Find the following AutoCAD blocks in this library:
Lighting and Exhaust Fans Blocks
ArchBlocks AutoCAD Lighting and Exhaust Blocks include the following:
Electrical Switches Blocks
ArchBlocks AutoCAD Switches Blocks include the following:
ArchBlocks AutoCAD Outlet Blocks include the following:
Climate Control Blocks
ArchBlocks AutoCAD Climate Control Blocks include the following:
Basic Electric Symbol Blocks
ArchBlocks AutoCAD Basic Electric Blocks include the following:
ArchBlocks AutoCAD Gas Blocks include the following:
Water AutoCAD Blocks
ArchBlocks AutoCAD Water Blocks include the following:
Reflected Ceiling Plan Blocks
CAD Reflected Ceiling Plan Blocks include the following:
Lighting Schedule Blocks
AutoCAD Lighting Schedule Blocks include the following:
Introduction video on how the Electrical Symbols Library works:
Over 70 AutoCAD blocks and CAD symbols included!
To return to the Electrical Library products page click below:
Below is a figure showing the most often used residential electrical blueprint symbols.
For other residential symbols, see our Blueprint Symbols page.
Electrical Blueprint Reading
The most commonly used electrical blueprint symbols including plug outlets, switches, lights and other special symbols such as door bells and smoke detectors are shown in the figure below.
Note: Explanations for common household electrical items such as three-way switches and switched duplex plug outlets are below the figure.
Duplex Plug Outlet: A standard plug outlet with two sockets for plugs.
Split Duplex Plug Outlet: Typically used in kitchens or anywhere the loads on a given outlet will be high. The two sockets of the duplex outlet are on separate circuit breakers at the electrical panel. This decreases the likelihood of having two appliances which are plugged into the same outlet trip the circuit breaker.
Switched Duplex Plug Outlet: This outlet can be turned on and off with a switch. Often used for lamps.
Toggle Switch: A common light switch.
3-Way Switch: A bit confusing but this means there are two switches in the home to control the same item (typically a light or group of lights). For instance you may have two entrances to your living room and a switch at both entrances to turn the living room lights on. You'll need to use 3-way switches at both living room entrances for this electrical circuit to work. The term 3-way actually describes the inner workings of the physical switch which is different from a standard toggle switch.
Residential Electrical Symbols For Autocad
4-Way Switch: As above with the three-way switch but here three switches will control typically a light or group of lights. If you had three entrances to a room, you may want a light switch at each entrance. For this circuit you will need to buy one four-way switch and two three-way switches.
Double Pole Switch: Typically used to switch outlets and appliances on 240 volt circuits.