Electrical Plans

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

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

Electrical Plans Example

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

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

Duplex Outlet with Switch

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

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