1. Electrical Plans

2. 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

3. Electrical Plans Methods used to show electrical systems on drawings
1 Add-on existing plans along with all other symbols, information, and dimensions
common practice on simple floor plans
eliminates extra sheets and simplifies working drawings
sometimes makes drawings difficult to read
2 Separate sheets for electrical information
common practice on complex floor plans
separates electrical information from other drawing data
requires time to duplicate floor plans unless CAD dwgs
adds more blueprints to set of working drawings
Use for class

4. Electrical Plans Example

5. Size and Drafting the Symbols
As noted on handout (units given below are full size units taken from the 16 scale)
Size of outlet symbol = 1/8” diameter circle
Size of light fixture symbol = 1/4” diameter circle
Size of fluorescent symbol = 1/8” x 1” (6”x48” real size)
Size of switch symbol = 1/8” lettering
Size of push button symbol = 3/16” square
Size of electrical panel = 3/8”long and fill 1/2 of wall
Size of meter base, etc. = 1/4” square

6. Outlets Symbol Wall View Description as shown on plan finished state
explanation

7. Duplex Outlet with Switch

8. Appliance vs. Voltage and Symbol
Refrigerator 120 volts
Stove volts
Hood volts
Oven volts
Garbage Disposal 120 volts
Dishwasher 120/240 volts R H GD O

9. Appliance vs. Voltage and Symbol
Clothes washer 120 volts
Clothes dryer 240 volts
Air Conditioner 120/240 volts
Water heater 240 volts
Furnace 120/240 volts AC WH F