
How to Install a New or Replacement AFCI Breaker
- Step 1: Turn Off the Main Breaker ...
- Step 2: Remove the Panel Cover ...
- Step 3: Test the Wires ...
- Step 4: Remove the Existing Breaker (Optional) ...
- Step 5: Prepare the Wires ...
- Step 6: Connect the Circuit Neutral Wire to the Breaker ...
- Step 7: Connect the Breaker Neutral Pigtail to the Panel ...
- Step 8: Connect the Hot Wire and Ground Wire ...
- Purchase a AFCI or GFCI/AFCI Circuit Breaker. ...
- Turn Off the Power and Remove the Panel Cover. ...
- Remove and Disconnect the Old Circuit Breaker. ...
- Connect the New Breaker. ...
- Insert the New Breaker. ...
- Turn On the Power.
How to install an arc fault circuit breaker?
What You Need to Prepare for an Arc Fault Breaker Installation
- Flathead screwdriver to uncover the panel and connecting wire
- Insulated or rubber gloves for additional protection
- Flashlight or any portable lights if your breaker panel is in a dark place
- AFCI wiring diagram for electrical wiring
- AFCI tester for more accurate testing of the circuit (optional)
How much does an AFCI breaker cost?
An AFCI breaker, on its own, costs anywhere from $30 to $50. But just asking how much the breaker itself costs is irrelevant unless you’re a licensed electrician. Why? Because the average homeowner shouldn’t be installing AFCI breakers. The job involves working with an electrically live panel and shouldn’t be considered a “DIY” project— ever.
How to replace or install circuit breaker?
- Go to the electrical panel in the basement, garage, utility room or hallway.
- Open the panel door and look for an index that tells which area of the home each breaker serves.
- Locate the corresponding breaker. ...
- Reset the breaker by moving the switch to the “Off” position. ...
Do you recommend AFCI breakers?
They will not interfere with the operation of ground fault circuit interrupter (GFCI) outlets, so it’s safe to install AFCIs on circuits that include GFCI outlets. This project guide will show you how to replace a standard circuit breaker by installing an AFCI breaker.

How do you wire an AFCI breaker?
2:203:40How to Install an AFCI Circuit Breaker | Ask This Old House - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo now that we have the wires identified and the old breaker removed we're going to go ahead andMoreSo now that we have the wires identified and the old breaker removed we're going to go ahead and install the new afci breaker and for starters we're going to install this pigtail onto the neutral bar.
How do you wire an AFCI switch?
2:334:24Leviton AFCI Installation - YouTubeYouTubeStart of suggested clipEnd of suggested clipThe white wire connects to the silver colored terminal. The black wire connects to the brass-coloredMoreThe white wire connects to the silver colored terminal. The black wire connects to the brass-colored. Terminal. Next connect the green or bare copper wire to the grounding terminal on the AFCI.
Where do AFCI breakers need to be installed?
AFCI current requirements in the NEC 2020 code: Common rooms. Hallways and closets. Kitchens. Laundry areas.
When should I install AFCI breaker?
16 states that AFCI protection is required for all 120-Volt, single phase, 15 and 20 amp branch circuits supplying outlets or devices installed in living rooms, parlors, libraries, dens, bedrooms, sunrooms, recreation rooms, closets, hallways, laundry areas, and similar rooms or areas.
Can I put an AFCI anywhere into the circuit?
AFCIs (Arc Fault Circuit Interrupters) can be used anywhere but the Bathroom and Kitchen.
Do you need AFCI breaker for lights?
Basically, if the light fixtures (or the switch controlling them) on your 15- or 20-amp circuit are located in any living space or “dwelling area,” you need to add an AFCI breaker.
Does refrigerator need AFCI?
Refrigerator Circuit This circuit usually does not require GFCI protection unless the outlet is within 6 feet of a sink or located in a garage or basement, but it generally does require AFCI protection.
Do I need a GFCI outlet if I have a AFCI breaker?
In 2014, the National Electrical Code® (NEC®) introduced AFCI requirements for kitchens and laundry rooms. The code had previously required that these locations needed only GFCI protection, but for added safety they are now required to have both AFCI and GFCI protection.
How many AFCI breakers do I need?
So it all started with the bedrooms. However, with every consecutive update of the Code, AFCIs were required in more rooms and areas. Since the revision of the NEC in 2017, every 15 and 20-amp, 120-volt, single-phase branch circuit outlets for dwelling areas are required to have AFCI installed on them.
How much does it cost to install an arc fault breaker?
If you're certain that you need an AFCI breaker installed in your home, you're looking at paying anywhere from $160 to $260+ per breaker.
Do bathrooms require AFCI?
Note: Arc-Fault Circuit Interrupters (AFCIs) requirements have not expanded to the entire dwelling unit (to include bathrooms, basements and crawl spaces).
Can I use AFCI outlet instead of breaker?
AFCI outlets work with any type of wiring and are not dependent on the type of breaker in the panel. They are also easily accessible and have a level of familiarity with users with the TEST and RESET buttons that are also present on GFCI outlets.
What is an AFCI switch?
AFCI Combo Switch Wiring Circuit Diagrams and Installation Arc fault circuit interrupter “AFCI” is a protection device used to protect the circuit from electric arcing which cases electric fire. It detects the arc and disconnect the circuit from main power supply.
Why does my arc fault breaker keep tripping?
The two main causes for nuisance tripping at AFCI circuit breakers are improperly wired circuits and incompatibility with electronic devices. Wiring Problems – when an AFCI circuit breaker is installed, the wiring for that circuit needs to be done a little bit differently.
Can a GFCI outlet be connected to a light switch?
Electrically there is no problem with powering the light with the hot and neutral feed to the GFCI receptacle. You could use pigtails to the receptacle line (and not use the load connection) and to the light switch so the lights would't go out if the GFCI receptacle tripped.
How much does it cost to install an arc fault breaker?
If you're certain that you need an AFCI breaker installed in your home, you're looking at paying anywhere from $160 to $260+ per breaker.
How to ensure an electrical fire never breaks out?
0 Comments. One of the best ways to ensure an electrical fire never breaks out in your home is by purchasing an arc-fault circuit interrupter (AFCI), designed specifically for preventing fires and protecting circuits throughout your home from electrical damage.
How to remove a panel cover?
Then, after you remove the panel cover, just follow these five steps. 1. Remove Your Current Circuit Breaker. Take out the circuit breaker that needs to be replaced. You should notice a black wire connecting it, so be sure you remove that, as well. 2. Disconnect the Wire.
Do AFCI circuit breakers have handles?
AFCI circuit breakers all have handles for turning them on and off.
Can I install an AFCI circuit breaker?
Fortunately, it’s incredibly easy to install AFCI circuit breakers.
Who should tackle electrical work?
Any work that is done on an electrical panel should be tackled by licensed professionals only.
Can you still have live voltage running through a panel?
a. There could still be live volta ge running through the panel, so this must be done very carefully.
Can a licensed electrician touch an electrical panel?
1. Note: Only a licensed professional should touch an electrical panel. With the box open and the breakers exposed, there is a risk of extreme shock injuries and even death.
How to connect a new AFCI breaker?
Then, connect the coiled white pigtail wire on the circuit breaker to one of the terminals on the neutral bus bar in the panel. This is done by inserting the bare end of the wire into one of the openings in the bus bar, then tightening down its setscrew.
How many amps does an AFCI circuit breaker have?
First, obtain an AFCI or GFCI/AFCI circuit breaker that matches the amperage of the circuit (normally 15 or 20 amps), and that is designated for your service panel. Different manufacturers have slightly different connection styles for circuit breakers, so you need to use breakers that match your panel. For example, if you have a Square D or Siemens circuit breaker panel, buy breakers from the same manufacturer. Third-party manufacturers of circuit breakers will generally specify the panel manufacturer they are matching—such as "Square D by Schneider."
How does an AFCI work?
Installing an AFCI or AFCI/GFCI combination circuit breaker is quite similar to installing a regular circuit breaker, and it is exactly like installing a GFCI circuit breaker. With a standard circuit breaker, there is only one wire connected to the breaker—the circuit's hot wire. But with both AFCI and GFCI circuit breakers, both the hot and neutral circuit wires are attached directly to the breaker, while a separate coiled pigtail wire from the breaker is connected to the neutral bus bar in the panel.
How to unsnap a circuit breaker?
Unsnap the circuit breaker from the clips holding it into the panel. Usually, this can be done by simply gripping the switch on the breaker and pulling outward — sometimes it helps to lever the breaker at an angle toward the outside of the panel. This action will snap the breaker's connection to the blades on the hot bus bar.
What is GFCI protection?
Requirements for GFCI (ground fault circuit interrupter) protection have been in place for many years, but more recently, the National Electrical Code (NEC) began requiring another form of protection, known as arc fault circuit interrupters (AFCI).
What happens when an arc fault is discharged?
As the discharge occurs, it creates very high heat and can melt the insulation around wire conductors and start fires in combustible materials. Unlike a ground fault, where the danger is mostly shock, an arc fault's primary danger is its ability to start a fire.
What is an arc fault?
An arc fault is essentially a spark between contacts in electrical wires. Similar to lightning, it is a highly energized plasma discharge that jumps an air gap from an energized source to a grounded location. As the discharge occurs, it creates very high heat and can melt the insulation around wire conductors and start fires in combustible materials. Unlike a ground fault, where the danger is mostly shock, an arc fault's primary danger is its ability to start a fire.
How does an AFCI breaker work?
After snapping the AFCI breaker onto a hot bus, the electrician attached that coiled neutral to the neutral bus 1. The electrician then stripped 3⁄8 in. to 1⁄2 in. of insulation from the end of the circuit-cable neutral and terminated it to the AFCI breaker lug, designated by a small white dot next to it 2. Note: Most circuit neutral wires terminate to a neutral bus. But here the circuit neutral attaches to the breaker so it can sense fluctuations in current throughout the circuit.
What is an AFCI breaker?
AFCI breakers are designed to detect arcing patterns of current in very short time intervals—such as when there is a loose connection on a receptacle and electricity arcs (jumps) between conductors. Drywall nails or screws puncturing a cable are other common causes of arc faults. When an AFCI breaker detects such patterns, it shuts off power to protect you from house fires.
What type of breaker do you need for 3 wires?
If you run 3-wire cable to serve two circuits and at least one of the new circuits must be AFCI-protected, you must terminate both cable hot wires to a two-pole AFCI breaker .
Where is AFCI required?
Since the 2008 NEC, AFCI protection is required for branch circuits in all areas inside the house except bathrooms, kitchen, garage, and unfinished basements and attics.
Can you use a 3 wire breaker to monitor current?
The solution: If you want to use 3-wire cable to provide AFCI protection to at least one of the circuits, you must install a two-pole AFCI breaker and attach both hot wires to it. The cable’s neutral attaches to the breaker’s neutral lug, as described above. In this manner, the AFCI can monitor current flow in both circuits.
Can you use a 3 wire breaker with an AFCI breaker?
This configuration allows an AFCI breaker to monitor current flow throughout the circuit, but it sometimes leads to problems when inexpert installers use 3-wire cable to serve two circuits—one of which must be AFCI-protected and the other is not. Their mistaken solution is to attach one hot wire of the 3-wire cable to an AFCI breaker and the other hot to a regular (non-AFCI) breaker. They then find that the AFCI breaker doesn’t work—it keeps flipping off.
How does an AFCI breaker work?
These breakers function by detecting if there is an arc in electricity and then shutting power off to stop the arcing. You can tell if you have AFCI breakers by looking at your electrical panel.
How does an AFCI work?
How does an AFCI actually work? These high tech breakers have many interior components that work together to determine arcing. In a nutshell, the equipment is able to detect the amplitude (size of power) over a period of time. If there is a short period of time where there is a surge of power, the AFCI is “tripped” and automatically shuts off ...
Where should AFCI’s be installed?
AFCI’s should be installed or covering every living space that is not a wet area. This means your AFCI breakers should be installed in all bedrooms, the living room, dining room, den, etc., but not where water is located (bathrooms, garage, exterior, and kitchens).
How to tell if you have AFCI or GFCI?
These breakers function by detecting if there is an arc in electricity and then shutting power off to stop the arcing. You can tell if you have AFCI breakers by looking at your electrical panel. A few breakers should have buttons for testing and be labeled as “AFCI”. However, this should not be confused with GFCI breakers ...
What is the blue button on AFCI?
Square D (blue buttoned) AFCI’s are actually called out for Recall due to consistent failure. Check for recall. A tell-tale sign is if you panel is branded with Square D, and you have blue buttons on your AFCI breakers. Check the featured image of this post for what they look like.
Do I need to upgrade my AFCI?
It is common to not have AFCI’s in older homes, therefore, you are not required to upgrade. On the other hand, if you want to sell your home, the buyer of your home may request AFCI’s to be installed for safety reasons. Speak with electricians for installing AFCI breakers in your home.

Basics of AFCI Protection
Project Overview
- Installing an AFCI or AFCI/GFCI combination circuit breaker is quite similar to installing a regular circuit breaker, and it is exactly likeinstalling a GFCI circuit breaker. With a standard circuit breaker, there is only one wire connected to the breaker—the circuit's hot wire. But with both AFCI and GFCI circuit breakers, both the hot and neutral circuit wires are attached directly to the brea…
Tools and Supplies You Will Need
Instructions
- First, obtain an AFCI or GFCI/AFCI circuit breaker that matches the amperage of the circuit (normally 15 or 20 amps), and that is designated for your service panel. Different manufacturers have sli...
- Place a non-conductive rubber floor mat on the floor in front of the main circuit breaker panel. While standing on the mat, open the door of the panel and shut off the main circuit breaker. A…
- First, obtain an AFCI or GFCI/AFCI circuit breaker that matches the amperage of the circuit (normally 15 or 20 amps), and that is designated for your service panel. Different manufacturers have sli...
- Place a non-conductive rubber floor mat on the floor in front of the main circuit breaker panel. While standing on the mat, open the door of the panel and shut off the main circuit breaker. Also fl...
- Unsnap the circuit breaker from the clips holding it into the panel. Usually, this can be done by simply gripping the switch on the breaker and pulling outward— sometimes it helps to lever the brea...
- Begin connecting the new AFCI or combo breaker by turning its switch to the OFF position. T…
Warning
- Any electrical repair carries a risk of shock to inexperienced DIYers, and working in the main service panel can be especially dangerous, since you are working near the main power source where 100 amps or more are flowing through the metal bus bars in the panel. Replacing a circuit breaker is actually quite simple if you work carefully while respecting the inherent danger of the …