Simple Tips on How to Replace a Circuit Breaker

To remove a circuit breaker, follow these simple tips:

1) Locate the electrical service box in your house.

2) Shut off the main breaker within the box and remove the panel covering the breakers.

3) Test the wire going to the circuit breaker you are replacing and make sure the power is off at that location. This can be done with an inexpensive circuit tester.

4) Unscrew and pull out of the way the feed wire going to the circuit breaker you are replacing. There should be only one black wire going to the breaker unless you have a multiple pole breaker or a very high amp rating on the breaker.

5) Remove the circuit breaker by pulling outwards towards yourself (this may take a little muscle but shouldn’t be too bad).

6) If you are replacing the breaker make sure the new circuit breaker is in the off position.

7) Install the new circuit breaker with the same amp rating unless you are adding a higher load on the circuit such as a freezer or air conditioner. In that case you might want to consult an electrician as to what kind of circuit breaker to put in.

8) Push the new breaker in place securely and reconnect the wire(s) going to it.

9) Turn the main circuit breaker on first and then the new circuit breaker you just replaced. If the new circuit breaker trips and shuts off then you either have a shorted connection (two wires or contacts touching each other) or the power load on the breaker is too high for the amp rating you chose.

10) If everything is working correctly install the service box panel and check your outlets, lights, appliances, etc. that are connected to the new breaker you have replaced.

A circuit breaker can be a scary thing to remove but if you take the proper precautions it can be done without any trouble. If you have any doubts then consult an electrician and decide if you need to hire them to take care of the task. I installed a complete service box in my garage and found a “How To” electrical book is a lifesaver as well.

Take care and stay safe!

The author Mike Webb was an automotive technician at a Chrysler Dealership for 15 years and an agricultural technician for 5 years. He won the prestigiousToptech award from Chrysler in 1996 and is an ASE certified Master Technician. He currently owns and operates the Okinawan School of Karate with 2 locations. To learn more about Mike Webb you can go to his website: http://www.karatebenefits.com

The above article may be published freely as long as no content is changed and all links are included.Copyright Mike Webb 2007

How to Replace a Circuit Breaker

It is always a good idea to have each circuit breaker clearly labeled. This prevents confusion and frustration in the event that one needs to be reset or replaced. You can begin labeling the circuits by turning them off and on to see which appliance it is connected to. Circuit breakers consist of the main power supply to your home as well as individual circuits for appliances within your home.

Learning how to replace a circuit breaker or install a new circuit breaker is a little more complicated than merely resetting a tripped breaker. Firstly, you should purchase a new circuit breaker from a home improvement or hardware store. Before installing a circuit breaker you should turn the main power breaker off to shut down power to the entire house.

You can remove the gray circuit breaker panel by unscrewing the faceplate. You will see two wires on the side of the breaker; be careful to remember what position each wire is in as you remove the panel. You can use a wire nut to hold and bend back the wire that you will use later on. Repeat this process for both the white and colored wires. After removing the old breaker box simply reinstall the new circuit breaker box and replace the wires in the same manner in which they were previously installed.

Installing a circuit breaker box is a seemingly simple task. Even if you are not technically inclined, you should still be able to perform this task. If, however, you are uncomfortable in dealing with electrical issues, it might be wise to consult with an electrician. All electricians know how to replace a circuit breaker and it is not very time consuming for them, and so it should not be expensive for you, and might save you some unnecessary frustration.

Circuit Breakers Info provides detailed information about circuit breaker panels, circuit breaker manufacturers, plus advice on how to replace and install circuit breakers and where to buy used and surplus circuit breakers. Circuit Breakers Info is the sister site of Electricians Web.

Why a Circuit Breaker Trips

Circuit breakers trip for one of two reasons, a short circuit or an overloaded circuit. A short circuit being the simplest to explain and the hardest to repair and an overloaded circuit being relatively easy to explain and easier to fix.

A breaker is designed to regulate the amount of amperage a wire can safely carry. This is why most 110 volt circuits in your home are wired with 12 Gage wire and placed on a 20 amp breaker. Quite possibly your home could be wired on 14 gage wire and a 15 amp breaker. One could place a 15 amp breaker on the 12 gage wire a swell but you can NEVER place a 20 amp breaker on 14 gage wire.

See, wire has a rated ampacity that it can carry and 12/20 and 14,15 are the maximum for each circuit. This is what is violated when a circuit breaker trips.

Ina short circuit the hot wire is broken or possibly just has the insulation worn enough to make contact with a ground. When this happens this direct short causes the amperage to increase coming through the breaker and when the amperage is higher than the rating on the breaker the breaker trips. When you try and reset the breaker it will trip right back off. Repairing this situation requires someone with electrical knowledge or hire an electrician. Electricity is dangerous so don't play around with it. It takes less than one amp to kill someone.

The other reason a circuit breaker trips is because of overloading the circuit. As I have stated a circuit has a breaker protecting the wire it is served by. If this is 12/20 then 20 amps is the maximum for the circuit. So, you plug in a hair dyer that is rated at 1500 watts and decide you better let the 1500 watt curling iron heat up. Now, a simple calculation watts divided by voltage gives amps. So, 3000/120=25amps. Your circuit is overloaded and will trip. Plug only one item in at a time or find another circuit for the curling iron!

Installing a New Circuit Breaker

There are only a few steps licensed electricians follow to install a new circuit breaker. In this demonstration, this Orange County Electrician will show you how he safely installs a new circuit breaker.

Step 1

First he will shut the power off at the main panel so the amp sub-panels do not have any live wires. Next, he unscrews the breaker panel. The average home has one panel, which in lays the main breaker and a large assembly of single pole and double pole breakers. There are still live wires which include the bigger wires entering the panel that feed the main breaker. He checks that the incoming wires are not live by using an electrical tester and when the electrical tester reads zero, it is safe to begin installing the new breaker.

Step 2

The next step is to install a new cable clamp. Putting in a cable clamp is simple. Around the edges of the panel box are knockouts. He hammers one of the knockouts with a screw driver so he can screw the new cable clamp into the circuit panel. He now can run the new wire into the circuit panel. Once the new wire is in the circuit panel, he now carefully cuts the outside jacket off of the wire to the circuit clamp.

Step 3

The third step is to connect the ground wire, which is the wire without a sleeve, inside the circuit wire. He places the ground wire into the ground bar. When tightening, he must be careful not to tighten too tightly or the ground wire may break.

Step 4

He will place the neutral wire (white wire) into the neutral line. Cut the tip of the plastic surrounding the neutral wire and slide it into the neutral line. Once again, he screws this wire in place but is careful not to tighten too tightly.

Step 5

Now he will install the circuit breaker. On the bottom of the breaker there is a screw that he loosens. Then he places the last wire under the screw. The last wire will be black. After the black wire is in place, he tightens the screw to hold the wire in place. The breaker that he's installing will have 3 prongs on the backside. These will hold the breaker in position. He aligns the breaker into the empty place and pushes the prongs in. Your circuit breaker is now secure.

Lastly, he removes the knock out from the panel cover and places it over the circuit panel. The customer now has a new circuit breaker.

These techniques are used by a licensed Orange County Electrician, for more information please visit http://www.tomwhelanelectric.com.

ITE Circuit Breaker-Introduction

Circuit-Breaker is a switch which controls the electrical system or electrical power system by turning power on or off in conditions of operational load or heavy load, mainly to protect the electrical system on which it is connected. There are two types of I T E circuit breaker one is hand operated and second is automatic. As alternating current (AC) passes through zero twice in a cycle (maximum to zero and then to negative maximum then again to positive maximum) hence, It is easy for a circuit breaker to break it.

Operating conditions for I T E circuit breaker are:

1. Some times when needed I T E circuit breaker is called upon to open in situations of a short circuit on the load, needed it to break a current that is a lot of times the normal load current.

2. Some times it is required to close on to a short-circuited system in order to verify that an error be present.

The circuit breaker usually operates under unusual conditions as explained above. Hence the circuit breaker must have to be reliable under static conditions of normal load, but it must respond very evenly when required to perform some action.

In most of the ITE circuit breaker when switch contacts are unlocked an electrical arc is formed in the medium between the contacts due to electric field. The medium between contacts is habitually air, but it can also be oil, a gas under high pressure, or it could be a vacuum. These arcing causes? lots of damage in circuit breaker so to prevent damage because of arcing, a secondary set is held together with the main set which starts functioning when the main set is closed, it always remains under pressure as the main set; and an arc chute is used to stretch and quench the arc, which is comprise of insulated parallel metal plates.

To maintain the switch closed under high mechanical pressure a mechanical arrangement of handles works as a latch, and to release it a sensitive trigger is used which is operated mechanically or electrically. Electrical functions may be governed by an electromagnet, by means of either the electrical signal derived from the network itself, or some other load current, to trip the trigger. In this system the switch can proceed as a surplus trip.

On the other hand, the ITE circuit breaker can be approved to use a small amount of other electrical quantity, such as unevenness in current among the load connections, which might correspond to escape of current to earth. In such cases the circuit-breaker also acts as residual current device (RCD), here ITE circuit breaker can provide shield in opposition to serious electric shock. Miniature circuit-breakers and RCDs have mainly take the place of fuses and usual isolating switches in domestic consumer units because they are much more precise and dependable.