Wiring Methods for Adding Kitchen Circuits
How should I wire kitchen electric circuits? How to Install Electrical Circuits in a Kitchen for Dish Washer and Garbage Disposal Outlet, Microwave Oven and more.
Kitchen Electrical Wiring
Electrical Question: How should I wire kitchen electric circuits?
I want to put in an over the range microwave oven and was wondering if it is okay to put it on the 2-20amp and 40 amp breaker.
- My kitchen circuit consists of two 20 amp breakers that are tied together.
- I have an electrical panel that is maxed out on circuit breaker spaces.
- There’s 12 gauge wire coming from each of the 20 amp breakers.
- They feed four kitchen counter outlets and also feed the refrigerator and the washing machine which is on the other side of the wall.
- The dishwasher has its own circuit and I’ll be splitting it with the new 1/3 hp garbage disposal, according to your Dish Washer and Garbage Disposal outlet and switch diagram.
- My one other option is to share the micro with the sump pump breaker.
- Also, on the the Dish Washer and Garbage Disposal switch setup that you show in the wiring diagram, is there a way to do that with a GFCI outlet?
Thanks By The Way for the wiring diagrams.
Thanks for your time!
This home electrical wiring question came from: Randy, from Portland, Oregon.
See more about Home Electrical Repairs for Oregon
Thanks for your electrical wiring question Randy.
How to Install Electrical Circuits for the Kitchen
Application: Installing Kitchen Circuits.
Skill Level: Intermediate to Advanced, best performed by a Licensed Electrician.
Tools Required: Basic Electricians Pouch Hand Tools, electric drill, auger bits and extension cord.
Estimated Time: Depends on personal level experience, ability to work with tools and install kitchen electrical circuit wiring.
Notice: Installing additional electrical circuit wiring should be done according to local and national electrical codes with a permit and be inspected.
Electrical Panels and Circuit Wiring
- A common mistake about circuit breakers is when a 2-pole breaker is added up as a total value, and this is incorrect.
- The 2-pole 20 amp circuit breaker is not considered 40 amps, it is two separate circuits of 20 amps.
- Circuit breakers should not be shared for more than one wire or branch circuit, and typically devices such as a microwave oven requires its own dedicated 20 amp circuit, depending of the size and specifications.
- From what you have described there is the possibility of circuit overloading of the kitchen circuits that are shared with the refrigerator and the washing machine, which each require their own dedicated circuits.
- GFCI outlets do not have the capability for being a split or switched outlet such as a duplex receptacle outlet.
- How to Create More Circuit Breaker Spaces
- Depending on the brand and type of electrical panel, it may allow for twin circuit breakers to be installed where one space may be used for two circuit breakers, and possibly quad circuit breakers with tied handles in the case of multi-wire circuits.
- NOTE: Additional Kitchen Circuits Require a Permit and Inspection
- Be sure to obtain a permit and the necessary inspections for the work that is being. Projects such as this are best performed by a licensed electrical contractor.
More about Wiring a Kitchen and Home Electrical Circuits
Home Electrical Circuit Breakers
A guide to home electrical circuit breakers and how they work to protect your electrical wiring. When properly installed, your home electrical wiring is protected by a circuit protection device.
Microwave Circuit Wiring
In kitchens it is common practice that if a microwave oven will be installed at a given location, such as Hood-Fan Microwave Ovens, that a Dedicated 20 Amp Circuit is always installed.
Consult your Local Building Department about Permits and Inspections for all Electric Wiring Projects.
The Safest Way to Test Electrical Devices and Identify Electric Wires!The Non-Contact Electrical Tester
This is a testing tool that I have had in my personal electrical tool pouch for years, and is the first test tool I grab to help identify electrical wiring. It is a Non-contact tester that I use to easily Detect Voltage in Cables, Cords, Circuit Breakers, Lighting Fixtures, Switches, Outlets and Wires. Simply insert the end of the tester into an outlet, lamp socket, or hold the end of the tester against the wire you wish to test. Very handy and easy to use.
The Quickest Way to Check for Faulty Electrical Wiring!The Plug-In Outlet Tester
This is the first tool I grab to troubleshoot a problem with outlet circuit wiring. This popular tester is also used by most inspectors to test for power and check the polarity of circuit wiring.
It detects probable improper wiring conditions in standard 110-125 VAC outlets Provides 6 probable wiring conditions that are quick and easy to read for ultimate efficiency Lights indicate if wiring is correct and indicator light chart is included Tests standard 3-wire outlets UL Listed Light indicates if wiring is incorrect Very handy and easy to use.
Strip Off Wire Insulation without Nicking and Damaging the Electric Wire!The Wire Stripper and Wire Cutter
My absolute favorite wire stripping tool that I have had in my personal electrical tool pouch for years, and this is the tool I use to safely strip electrical wires.
This handy tool has multiple uses:
The wire gauges are shown on the side of the tool so you know which slot to use for stripping insulation.
The end of the tool can be used to grip and bend wire which is handy for attaching wire onto the screw terminals of switches and outlets..
The wire stripper will work on both solid and stranded wire. This tool is Very Handy and Easy to Use.
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