1. Planning The Electrical System
4 Requirements for a well planned system:
Safe
Adequate for convenience
Efficient
Expandable

2. Types of Branch Circuits
Individual
General Purpose
Small Appliance
Laundry
Bedroom
Def: Branch Circuit- circuit conductors between the final overcurrent device protecting the circuit and the outlets installed.

3. NEC Requirements

4. Individual Circuits Motors ½ horsepower and larger
Equipment in which operation and/or temperature is critical
All 240 volt equipment
NEC:

5. Small Appliance Circuits
Two or more small appliance circuits required
Must be 20 amp
No other outlets may be supplied (Lighting)
May supply other outlets in the same kitchen or specified room ( pantry, breakfast room, dining room, other similar area).
Cannot serve more than one kitchen.
NEC: & (B)

6. Laundry Circuits At least one laundry circuit is required by NEC
Must be 20 amp
The circuit shall not serve any other outlets
NEC: & (F)

7. Bathroom Circuit At least one laundry circuit is required by NEC
Must be 20 amp
The circuit shall not serve any other outlets except in same bathroom.
NEC: & (D)

8. General purpose circuits
All lighting outlets must be served with general purpose circuits
All receptacles not on an appliance, laundry, or individual circuit
May be 15 or 20 amp
Bedroom circuit must be Arc-Fault protected
NEC: ,

9. Types of Outlets Lighting Outlets Convenience Outlets
Special Purpose Outlets
Def: Outlet- a point in the wiring system at which current is taken to supply equipment

10. Lighting Outlet Requirements
At Least one wall switch controlled lighting outlet shall be installed in each:
habitable room,
bathroom,
hallway,
stairways (at both levels if over 6 steps),
attached garage
detached garage with electrical power
exterior light at grade level.
NEC:

11. Lighting Outlet Requirements
At least one lighting outlet containing a switch or controlled by a switch is required in
Attic
Under floor space
Utility room
Basement
NEC:

12. Lighting Load
A unit load of not less than that specified in 05 NEC Table

13. Lighting Location No NEC recommendations
Good lighting is a practical combination of:
Lamp height
Light output (lumens)
Lamp spacing
Correct color
Fixture style (directed lighting)
See 14th Edition Agriculture Wiring Handbook
for specific agricultural applications

14. Switch Location No NEC recommendations Common Practices:
Install Switch on latch side of door
Install switch in same room as light
Locate switches about 48 inches above floor normally
Locate switches as high as can be reached conveniently for buildings housing livestock.
Install switches at each principle entrance (use of three-way switches is recommended for multiple entrances to same room)
See 14th Edition Agriculture Wiring Handbook

15. General Receptacle Outlet Requirements
IN EVERY KITCHEN,FAMILY ROOM, DINING ROOM, PARLOR, LIBRARY,DEN SUNROOM, BEDROOM, RECREATION ROOM, OR SIMILAR ROOM RECEPTACLES SHALL BE INSTALLED ACCORDING TO 05 NEC ARTICLE
No point measured horizontally along the floor line in any wall space can be more than 6 feet from a receptacle outlet
Wall space- any unbroken space of 2 feet or more
NEC (A)

16. Receptacle Outlet Requirements
SEE 05 NEC (B) Small Appliance
(1) Receptacle Outlets Served
(2) No Other Outlets
(3) Kitchen Receptacle Requirements
SEE 05 NEC (C ) Countertops
Wall Counter Spaces
Island Counter Spaces
Penninsular
Separate Spaces
Receptacle Outlet Location

17. SEE 05 NEC (D ) Bathrooms
SEE 05 NEC (E ) Outdoor
SEE 05 NEC (F) Laundry