Remodeled Kitchen

Construction View

The kitchen remodeling «viring proiect shown on the toll wing pages includes the installation of seven new circuits Four of these are dedicated ci its a 50-amp circuit Suppi mg the range a 20-amp ci cower inc the microwave an l5~-amp circuits supplying tr-dishwasher and food osoost In addition two 20-amp circuits for small appliances supply power to an receptacles above the countertops anc n tne eating area Finally a 15-a^p basic lighting c cc-:roi the ceiling fixture ' tne recessed fixtures a"1 "ie under-cabmet task ghts

All rough construe and plumbmg wo^k s^o- a oe finished and msoeceo oe'ore beginning the e^ec" work Divide the proiec: ~*o steps and complete eac~ teo befor beginning the nex"

Three Steps for Wiring a

Remodeled Kitchen:

1. Plan the Circuits (pages 232 to 233)

2. Install Boxes & Cables (pages 234 to 237)

3. Make Final Connections (pages 238 to 243).

Tools You Will Need

Marker, tape measure, calculator, masking tape, screwdriver, hammer, power drill with %' spade bit, cable ripper, combination tool, needlenose pliers, fish tape.

Kitchen Fish Pliers

■ Circuits #1 A «2: Two 20-amp. 120-volt small-appliance circuits wired with one cable. All general-use receptacles must be on these circuits, and they must be GFCI units. Includes: 7 GFCI receptacles rated for 20 amps, 5 electrical boxes that are 4" x 4", and 12/3 cable. One GFCI shares a double-gang box with circuit #5, and another GFCI shares a triple-gang box with circuit #7.

■ Circuit #3: A 50-amp, 120/240-volt dedicated circuit for the range. Includes: a4'x4' box; a 120/240-volt. 50-amp range receptacle; and 6/3 NM cable.

120 240 Receptacle Images


Wiring a

Remodeled Kitchen:

Diagram View

This diagram view shows the layout of seven circuits and the location of the switches, receptacles, lights, and other fixtures in the remodeled kitchen featured in this section. The size and number of circuits, and the specific features included, are based on the needs of this 170-sq. ft. space. No two remodeled kitchens are exactly alike, so create your own wiring diagram to guide you through your wiring project.


See pages 152 to 153 for a key to the common electrical symbols used in this diagram and to learn how to draw your own wiring diagrams

■ Circuit #7: A 15-amp. 120-volt basic lighting circuit serving all of the lighting needs in the kitchen. Includes: 2 single-pole switches. 2 three-way switches, single-gang box. 4' x 4" box. triple-gang box (shared with one of the GFCI receptacles from the small-appliance circuits), plastic light fixture box with brace, ceiling light fixture.

4 fluorescent under-cabinet light fixtures. 6 recessed light fixtures. 14/2 and 14/3 cables.

■ Circuit #6: A 15-amp. 120-volt dedicated circuit for the dishwasher Includes: a 15-amp duplex receptacle, one single-gang box, and 14/2 cable.

■ Circuit #4: A 20-amp, 120-volt dedicated circuit for the microwave. Includes: a 20-amp duplex receptacle, a single-gang box. and 12/2 NM cable.

■ Circuit #5: A 15-amp. 120-volt dedicated circuit for the food disposer. Includes: a 15-amp duplex receptacle, a single-pole switch (installed in a double-gang box with a GFCI receptacle from the small-appliance circuits), one single-gang box. and 14/2 cable.

Dedicated Amp Receptacle

Code requires receptacles above countertops to be no more than 4 feet apart. Put receptacles closer together in areas where many appliances will be used. Any section of countertop that is wider than 12" must have a receptacle located above it. (Countertop spaces separated by items such as range tops, sinks, and refrigerators are considered separate sections.) All accessible receptacles in kitchens (and bathrooms) must be GFCI-protected. On walls without countertops. receptacles should be no more than 12 feet apart.

Wiring a Remodeled Kitchen

1: Plan the Circuits

A kitchen generally uses the most power in the home because it contains many light fixtures and appliances. Where these items are located depends upon your needs. Make sure the main work areas have plenty of light and enough receptacles. Try to anticipate future needs: for example, install a range receptacle when remodeling, even if you currently have a gas range. It is difficult and expensive to make changes later. See pages 138 to 153 for more information on planning circuits.

Contact your local Building and Electrical Code offices before you begin planning. They may have requirements that differ from the National Electrical Code. Remember that codes contain minimum requirements primarily concerning safety, not convenience or need. Work with the inspectors to create a safe plan that also meets your needs.

To help locate receptacles, plan carefully where cabinets and appliances will be in the finished project. Appliances installed within cabinets, such as microwaves or food disposers, must have their receptacles positioned according to manufacturer's instructions. Put at least one receptacle at table height in the dining areas for convenience in operating a small appliance.

The ceiling fixture should be centered in the kitchen ceiling. Or, if your kitchen contains a dining area or breakfast nook, you may want to center the light fixture over the table. Locate recessed light fixtures and under-cabinet task lights where they will best illuminate main work areas.

Before drawing diagrams and applying for a permit, evaluate your existing service and make sure it provides enough power to supply the new circuits you are planning to add (pages 148 to 151). If it will not, contact a licensed electrician to upgrade your service before beginning your work. See pages 152 to 153 for more information on drawing wiring plans.

Bring the wiring plan and materials list to the inspector's office when applying for the permit. If the inspector suggests improvements to your plan, follow that advice.

A switch with a grounding screw is required when metal coverplates are used and when the switch is installed in a plastic box.

Grounding screw

Metal ^ coverplate

What Appliances Use Amps

Two 20-amp small-appliance circuits c be mac '59

Work areas 'ange rpr

Dishwashers and food disposers require dedicated 15-amc 120-voM circuits most ioca' cooes Some inspectors alio., 'nese appliances to share one circuit

Two 20-amp small-appliance circuits c be mac '59

Work areas 'ange rpr

Ranges -equire a oeoicateo 40-O' 50-amp 120 240-vOit circuit '.'.oc its'or separaie oven ana countertop units i Even if you do no' ha e an eiecmc range >t is a gooa iaea to install the circuit ,vh~n remodeling

Dishwashers and food disposers require dedicated 15-amc 120-voM circuits most ioca' cooes Some inspectors alio., 'nese appliances to share one circuit

Home Wiring Kitchen

Heights of electrical boxes m.

Heights of electrical boxes center of the box for the mi wave receotaci ttie floor where it will fit between the cabinets centers of the ooxes tor the range and food dispose- receptacles are 12 off the floor but the center ot the box tor the dishwasher receptacle is 6 off the floor next to the space the appliance will occupy

Wiring a Remodeled Kitchen

2: Install Boxes & Cables

After the inspector issues you a work permit, you can begin installing electrical boxes for switches, receptacles and fixtures Install all boxes and frames for recessed fixtures, such as vent fans and recessed lights, before cutting and installing any cable However some surface-mounted fixtures such as under-cabinet task lights, have self-contained wire connection boxes These fixtures are installed after the walls are fi ished and the cabinets are m place

First determine locations for the boxes above the countertops (page opposite) After establishing the height for these boxes install all of the other visible wall boxes at this height Boxes that will be behind appliances or inside cabinets should be located according to appliance manufacturer's instructions For example, the receptacle for the dishwasher cannot be installed directly behind the appliance, it is often located in the sink cabinet for easy access

Always use the largest electrical boxes that are practical for your installation Using large boxes ensures that you will meet code regulations concerning box volume and simplifies making the connections See pages 170 to 175 tor more information on choosing and installing standard electrical boxes

After all the boxes and recessed fixtures are installed you are ready to measure and cut the cables First install the feeder cables that run froi the circuit breaker panel to the first electrical box in each circuit Then cut and install the remaining cables to complete the circuits See pages 178 to 183 tor information on installing NM cable

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  • Thomas
    What wire used to disposal circuit diagram?
    4 years ago

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