Upload
janice-lindsey
View
301
Download
2
Tags:
Embed Size (px)
Citation preview
Light Fixtures
• Ceiling/Wall fixtures– surface– recessed
• Fan (exhaust)
• Junction box
• Fluorescent fixtures
Switches
• Single Switch
• 3-way Switch
• 4-way Switch
• Dimmer Switch
• Timer Switch
Electrical Symbols - Miscellaneous
Electrical Code/Drafting Practice• Duplex convenience outlets (wall plugs) should be a
maximum of 12’ apart. Closer spacing is desirable, although economy is a factor. Code reads: “no point along a wall is further than 6’ from an outlet.”
• Duplex convenience outlets should be no more than 6’ from a corner
• There should be a duplex outlet in any usable wall space over 2’ long
• Place a (one) duplex outlet in a hallway
Outlet Placement Example
Electrical Code/Drafting PracticeKitchen /Bathroom areas– usable counter space of 12” & greater require an outlet– outlets are required every 48” of counter space (with new
code text is in error)– note mounting height for outlets above counter (+44”)– special purpose outlets for garbage disposal, dishwasher,
separate oven, and hood– range outlet for electric range– GFI or GFCI protection for any outlets in rooms with a
water source.
Switch/Outlets Examples
Switching Examples
Switching• Switch symbol and
fixture are connected with a dashed line using a irregular curve
• Single Switching
• 3-Way Switching
• 4-Way Switching
Switching an Outlet
Switching a Porch Light
+(MOUNTING HEIGHT)
Electrical Plan Example
Special Project Elect Plans (50 Points)
• Add electrical symbols and all electrical information to your plans:– Foundation plan (3 light +switch, one outlet and
special purpose outlet for water heater)– First level floor plan (two exterior WP outlets, lights
at all entrances, elect range w/ hood above, garbage disposal, dishwasher outlet, and washer/dryer outlets)
– Second level floor plan (exhaust fans in bathrooms, 3-way switch to 1st floor for stair light)
– Complete an electrical schedule (10 points) for all the symbols used similar to one shown in Handout
Electrical Symbol Schedule
• Purpose of schedule is to identify and describe electrical symbols used in the set of working drawings
• Categories– Symbols– Descriptions