1. Lighting Branch Circuit and Small-Appliance Circuits for Kitchen
Chapter Twelve
Lighting Branch Circuit and Small-Appliance Circuits for Kitchen

2. Objectives After studying this chapter, you should be able to:
Understand lighting for a typical kitchen and dining room
Understand the installation and operation of kitchen exhaust fans
Know the NEC® requirements for small-appliance branch circuits in kitchens

3. Objectives (cont’d.)
Know the NEC® requirements for GFCI protection for all receptacles that serve countertops in kitchens
Decide if a separate branch circuit should be installed for a refrigerator

4. Objectives (cont’d.)
Decide where it might be desirable to install multiwire branch circuits and split-circuit receptacles in areas where a high concentration of plug-in appliances might be used

5. Kitchen
NEC® defines a kitchen as “an area with a sink and permanent provisions for food preparation and cooking”
Permanent provisions are in place even though the appliance may not be permanent

6. Lighting Circuit B7
AFCI protection is required for the lighting branch circuit
A feed-through receptacle may be used for this protection
Type AFCI circuit breaker installed in the panelboard is more practical

7. FIGURE 12-1 Cable layout for the kitchen lighting. This is Circuit B7.
© Cengage Learning 2015 3

8. Kitchen Lighting
Prior to installing the wiring, the electrician really has to consider the wishes of the homeowner
Lighting should be arranged to avoid shadows in work areas
Sometimes strip fluorescent or LED luminaries are used under cabinets

9. Fan Outlet Ducted fans exhaust air to the outside
To remove cooking odors, steam, and smoke
Ductless fans remove cooking odors but do not remove steam or smoke
NEC® (B)(4) permits a range hood to be cord-and-plug connected

10. Fan Outlet (cont’d.)
NEC® defines an individual branch circuit as “a branch circuit that supplies only one utilization equipment”
NEC® (B)(1) requires that a single receptacle supplied by an individual branch circuit have an ampere rating not less than the rating of the branch circuit

11. Clock Outlets
Battery-operated wall and mantle clocks for the most part have replaced electric clocks
Clock hanger receptacles
Still available
Set back from the front edge of the faceplate, providing room for the typical small plug cap on the end of a cord

12. Small-Appliance Branch Circuits for Receptacles in the Kitchen
At least two 20-ampere small-appliance branch circuits are required in a kitchen
The small-appliance circuits shall be assigned a load of 1500 volt-amps each
Countertop receptacles must be supplied by at least two small appliance circuits

13. FIGURE 12-10 Cable layout for kitchen receptacles.
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14. Small-Appliance Branch Circuits for Receptacles in the Kitchen (cont’d
All countertop receptacles must be GFCI protected
Refer to NEC® (C)(1), (A), and (B)
Additional small-appliance circuits may be installed as needed

15. Split-Wired Receptacles and Multiwire Circuits
A split-wired receptacle has the top receptacle on one circuit and the bottom receptacle on a different circuit
A popular use of split-wired receptacles is to control one receptacle with a switch and leave one receptacle “hot” at all times

16. FIGURE Connecting the grounded neutral conductors in a 3-wire (multiwire) branch circuit, NEC (B). © Cengage Learning 2015 11

17. Split-Wired Receptacles and Multiwire Circuits (cont’d.)
Terminals of receptacles or other wiring devices are not to serve as a splice
NEC®, (B) states: “In multiwire branch circuits, the continuity of a grounded conductor shall not be dependent upon device connections …”

18. FIGURE 12-15 Split-wired receptacle connected to multiwire circuit.
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19. Receptacles and Outlets
Article 100 defines a receptacle and a receptacle outlet
A single receptacle connected to a circuit must have a rating not less than the rating of the circuit