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Circuit Installation How does one install a circuit breaker?

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The process contain a certain degree of risk, but if you follow all safety steps, you should be just fine. Most standard electric panels have a main disconnect switch or breaker at the top of the panel or load center. It is a code requirement. If the load center doesn't have one, then look for the main disconnect at a different location possibly near the electric meter. Turn it off. You better have a flashlight handy or a caving or miner's helmet, because you are going to need a light source. Circuit breakers plug into the load center. The electricity flows into each breaker via a large metal strip inside the panel or load center. It is called a bus bar. This strip is HIGHLY dangerous. Touch this strip while it is energized and you will very likely die. If a screwdriver you are holding slips and touches it, expect nearly the same result. Keep in mind that even though the main breaker may be off, the bus bar may be energized for any number of reasons! Also, the wires leading into the top of the main disconnect are always energized and represent a life safety hazard. In other words, the inside of an electric panel or load center is ALWAYS a dangerous place to be. The black wire to a circuit attaches to one end of a standard or AFCI breaker. The location is almost always a hole that is drilled through a threaded cylinder. A screw twists into this cylinder and tightly clamps down the wire. When installing a new breaker, I always find it easier to attach the circuit wire to the breaker before I plug the breaker into the panel. When removing a breaker, I usually unplug the breaker from the bus bar and then remove the circuit wire from the end of the breaker. Make sure the breaker is in the off position. The end of the breaker where the circuit wire attaches almost always has a small notch in it. This notch fits under or slides into a metal tab strip that runs parallel with the bus bar. This is what stabilizes the breaker. Without this secondary attachment, the breakers would flap in the panel much like a sail that is not tied down to the mast or the side of a boat. Tip the end of the breaker so the notch slides into the metal tab. You then align the breaker with the bus bar and push it down onto the bar. The tension tabs on the breaker open slightly and grip the bus bar as the breaker seats itself. If you feel the breaker seated itself correctly, simply turn it on. All should be well. Remember to follow the instructions that come with the breaker. Always follow the sequence the manufacturer suggests. AFCI breakers require one additional step. You need to locate the white wire that is paired with the black wire in that circuit. The white wire actually attaches to the breaker as well. There is a coiled white wire that leads out of the breaker. This white wire attaches to the neutral bus bar in spot that is vacated when you disconnect the white wire of the circuit. If this answer scared you, call an electrician!

Posted on Aug 27, 2008

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Is a titan N120 54amp to much load on a 200 amp max circuit?


1) Copy following links:
http://waterheatertimer.org/Troubleshoot-household-electricity.html#stress
http://waterheatertimer.org/How-to-wire-Tankless-electric-water-heater.html
http://waterheatertimer.org/Color-codewire.html

2) The answer depends on how much load you presently have on the 200 amp service.

3) Installation requires 1 double-pole circuit breaker
54 amps @ 240V = 12960 watts
One site recommends 60 amp breaker and 6 gauge wire.
Contrast national electric code says safe maximum for 60 amp breaker x 80% is 48 amps ... less than 54 amp maximum for N120 tankless
I recommend 70 amp breaker and 4 gauge wire so overheating is never problematic causing heat problems on busbar.

4) Amazon selling site says Warm climate and Incoming water temp above 65 degrees is recommended
http://waterheatertimer.org/Tempering-tank.html

Mar 18, 2013 | Circuit Breakers & Wiring Panels

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Need information on circuit breaker BR2100 60amp


Hi - I'm an electrician and can help you with your question.

A BR2100 circuit breaker is a 2 Pole 100 Amp (for the part number "BR2100", the "2" indicates the number of poles and the "100" indicates the amperage) circuit breaker. It can be installed in a single phase or three phase 120/240 VAC system panel that specifically lists the BR series breakers as acceptable for use.

A BR260 A BR2100 circuit breaker is a 2 Pole 60 Amp (the part number BR260, the "2" indicates the number of poles and the "60" indicates the amperage) circuit breaker. It can be installed in a single phase or three phase 120/240 VAC system panel that specifically lists the BR series breakers as acceptable for use.

It is not possible to have a BR2100 rated for 60 amps, 1 or 3 poles, or a BR260 rated for 100 amps, 1 or 3 poles.

It is not permissible to install any circuit breaker brand or type in any panel that does not specifically include it on a list of acceptable circuit breakers.

Circuit breakers are designed to carry 80% of the amperage rating.
To determine the load a circuit breaker can carry, multiply the circuit breaker amp rating by 80%.
This means that if you need to supply more than 80 amps, you cannot use a 100 amp circuit breaker. A higher rating is required. A BR2110 would be acceptable for loads greater than 80 amps, but less than 88 amps because the formula above says: 110 amp x 80% = 88 amps.

To determine the breaker size, determine the load (by measuring with a meter or obtaining amp rating of the load from the data plate) and multiply it by 125%. Using the same numbers in the example above; assume an 88 amp load. 88 amps x 125% = 110 amp circuit breaker. The 60 amp breaker is acceptable for up to 48 amps because 60amps x 80% = 48 amps. A 48 amp load needs a 60 amp breaker because 48 amps x 125% = 60 amps.

I hope this helps and good luck!

Jan 15, 2013 | Eaton Corporation BR2100 Circuit Breaker

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How to replace a Bryant GFCB120 Circuit Breaker


If you have a Bryant load center, you can use other breakers in it, including the Eaton GFCB120 GFI since several companies unified their design. The GFI (ground fault interrupter) or GFCI (ground fault circuit interrupter), same thing, may be required for a device you are installing, such as bathroom, kitchen or outdoor fixtures.
The Eaton series includes very clear installation instructions, but if your problem is that they are missing, then all you do is install the breaker in a open slot in the breaker panel, but you have to attach the neutral [white] wire differently. On regular breakers, the neutral goes right to the ground lug in the panel. With a GFI breaker, it goes through the breaker, and then is connected to the ground lug.

Mar 09, 2012 | Eaton Corporation GFCB120 GFI Circuit...

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QO115GFI breaker trips when I switch on the breaker next to it.


I happen to have one of these in the box, so I've reviewed the installation & on-line literature for this model. Let's address installation notes:
Don't connect more than 250 ft of load conductor for the total one-way run, to prevent nuisance tripping.
The breaker is to be used on grounded power supply circuits only. We're talking a properly-grounded breaker box, not just the protected circuit.
Look at the side of the breaker. You will notice that the curly white wire is meant to be connected to the (properly grounded) neutral bar in your panel.
The circuit neutral that you're protecting should be landed on the terminal just above that curly wire. Make sure you have the right neutral!
The circuit's hot wire would of course be landed on the topmost screw.
You did not state what you mean by "the breaker next to it": just above, just below, or directly across from the GFI breaker?
I suspect that you meant just above or below the GFI breaker. And I assume you've swapped out other breakers to rule out a defective breaker.
Now, it is possible that you have a "shared neutral" situation. It's a common wiring practice to use one neutral wire for two "hots", where one circuit is fed from the phase A side and the other is fed from the phase B side, (which you'll have in a two-pole, 220V breaker), picking up a 110 volts from each phase. The two 110v "Hots" share a single neutral wire between them to carry return current. The phase shift between the two phases allows this.
However, to avoid nuisance tripping of your GFI, your protected circuit cannot share neutrals with another circuit, as the "other" circuit's operation will cause the 6 milliamp differential between current out (hot) and current return (neutral) which the GFI by design senses and trips.
Your GFI-protected circuit probably needs its own dedicated neutral!
I'd like to hear what you find. Good luck!

Feb 24, 2012 | Square D QO115GFI QO Circuit Breaker

1 Answer

Do you have a wiring diagram for the square d qo250gfi


Any 2-pole GFI breaker typically supplies power to a dedicated balanced load, such as a pool motor or heater. Any load imbalance between either power leg (L1 or L2) and/or the neutral (N) will cause the breaker to trip on ground-fault, ie, it senses more power is going out than is coming back, so it must be leaking out somewhere and the breaker trips.
The load conductors are connected to the breaker under the brass colored screws just like a conventional breaker and the white wire pigtail from the breaker is always connected to the neutral (not bond (green)) buss bar whether the load circuit has a neutral or not. If the load circuit does have a neutral, that white neutral conductor connects to the GFI breaker under the chrome colored screw, else, this screw is left empty.
If you have any questions or hesitations, you really should have this project performed by a licensed electrician. GFCI protection is a life-safety issue and any improper installation defeats this protection.
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Jul 20, 2011 | Square D Qo250gfi 2pole 50amp 240v Circuit...

1 Answer

What GFI breaker is compatible with a Challenger Breaker Box


The National Electrical Code prohibits the use of mixing circuit breaker manufacturers and circuit breaker panels by requiring all electrical equipment to be certified (UL Listed, FM, etc.). Challenger breakers are UL listed, as are Challenger panels. All the circuit breakers installed must be made by Challenger and must be approved for use in that particular panel (more on this below). Installing a different brand breaker into the panel causes the panel and the breaker to lose the UL / FM listing. The lack of a listing causes the electrical code violation. Should a fire occur, and the source is determined to be the use of a mixed manufacturer panel / circuit breaker installation, you insurance company may balk at paying a claim.

If you are unsure of the circuit breakers that are approved for use in your panel, look on the inside cover of the door. On it should be listed the manufacturer's name and all the devices that that the panel will accept. Deviating from the list will trigger the loss of listing.

A final thought: Most GFI breakers are much more expensive than a GFCI outlet. Install a standard non-GFI Challenger breaker and feed a new outlet (next to the panel) with a GFCI plug via the LINE terminals. Connect the rest of the old circuit to the outlet's LOAD terminals. The portion of the circuit that is connected to the LOAD terminals are now GFCI protected. Overloads will trip the circuit breaker as usual, but ground fault issues will trip at the outlet instead.

I hope this helps and good luck! Please rate my reply. thanks.

May 11, 2011 | Challenger Circuit Breaker

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I installed the above gfci with the pigtail side adjacent to the neutral bar, contrary to intructions. The gfci trips immediately when power is turned on the gfci is switched on. What could be wrong and...


1. Did you connect the neutral wire (white) from the breaker to the neutral bar?
2. Did you connect the circuit neutral wire (white) to the circuit breaker. If there is a neutral load the load MUST be connected to the breaker no to the panel neutral bar.
3. If this is a 50A load, what is the appliance connected to the circuit? If it is a range, quite often the newer ranges have a ground wire connected to the burner mount. A small current leakage in the element can trip the GFCI. Check each element (with power off) from the wiring terminals to ground with an ohm meter.

Oct 22, 2010 | Siemens 50 Amp Ground Fault Circuit...

1 Answer

I need to buy a 20/20 Amp Bulldog breaker for a dryer and any installation tipes


Most electrical dryers are 220 volt. They usually require at least a two pole 30 amp circuit with #10 wire. The breakers you need can be found at most hardware and buidling type stores, Ace , Home depot, Lowes.
Yes they would have the 20/20 breaker also.

Please Vote !!

Apr 24, 2010 | Bulldog Pushmatic 31115 P115 15 Amp...

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