Question about Square D Ehb24020pl 20 A Ehb4 Ehb Circuit Breaker

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Ehyb4 circuit breakers

How to install?

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  • Bob
    Bob May 11, 2010

    Are you sure the breaker is a Square D ehb24020pl? If so......
    I'm sorry, but if you have to ask, it also means that you are not aware of the HAZARDS involved and how to safely change that breaker without killing yourself or being seriously injured. Call a qualified electrician.



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I have two circuits that are not working. They flip on an off and turn other items in the room off and on but some of the plugs do not have power. My yard light went out at the same time on another curcuit breaker. Should I go by new breaker and replace the ones on the panel now?

Posted on Jun 30, 2010

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First switch off the power at the main breaker or pull the meter from the meter socket. If you flip off the main breaker and it is mounted in the same breaker panel, just be aware that the wires above the breaker are still hot. Connect the white wire to the neutral bar, the green wire to the ground bar, and the black wire to the breaker. Then tilt the breaker to get the front black lug under the bar and push the back of the breaker onto the lug on the bus bar.

Posted on Mar 03, 2009

  • Fahr Quad Mar 04, 2009

    WARNING - IGNORE WHAT I SAID EARLIER. I had assumed that you were talking about a residential panel when I answered your question. I was curious why you specified an EHB 24020PL and I pulled up the specs. That breaker is a 480/277volt breaker for industrial use and is not used in residential applications. If you are doing work on an industrial panel, you should call an electrician to do the work otherwise you will end up a smoldering pile of ashes. Pulling the meter will most likely NOT disconnect the power since higher volotages and ampacities use induction metering rather than direct metering. No one other than a qualified electrician should be working in that panel, and to do otherwise is a violation of the National Electrical Code, violate OSHA regulations, and void your liability insurance policy. Although times are tough all around, this is NOT the place to try to save a buck or two.

  • Fahr Quad Mar 07, 2009

    So did you take my advice or are you a crispy critter???

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1 Answer

What electric circuit brakers are compatable with each other


It is an electrical code violation to install any circuit breaker into a panel for which it is not designed - regardless if "it fits" or not.

The label on the inside cover of the panel will provide a complete list of circuit breakers that are approved for use and maintains the panel's UL listing. Installing any circuit breaker that does not appear on this list will result in loss of the UL listing and if a fire were to develop, your insurance company may balk at paying a claim.

This is not a game - install ONLY those circuit breakers listed on the label for use in the panel.

Sep 30, 2014 | Circuit Breakers & Wiring Panels

2 Answers

I have 110 volts n each leg but not 220 across both why??


In a traditional North American residential electrical panel (120/240 volt, single phase), installing a single width or single pole circuit breaker, you would expect to read 120 volts from the breaker terminal screw to either ground or neutral. A double width or double pole breaker would provide 120 volts from either of the breaker terminal screws to ground or neutral AND it will provide 240 volts BETWEEN the TWO breaker terminals.

A single-width circuit breaker case that contains two handles is NOT a two pole circuit breaker (these are called "tandem" or "1/2 size" breakers). This is because a single width breaker engages only one "line" in the panel. A double width breaker will engage 2 "lines" as a triple width breaker would engage 3 "lines" of a 3 phase panel. A single wide breaker can not physically engage more than 1 "line" so it will never be able to pass 240 volts.

You must install a double width / double pole breaker to safely supply a 240 volt circuit / device.

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1 Answer

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

1 Answer

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.

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1 Answer

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

Room heater caused 15 amp circuit breaker to go bad. Can we update 15 amp circuit breaker to 20 am (similar to ones next to it)


Probable not, in order for you to install a 20 amp breaker, the wiring must be a #12 gauge cable.Check the power requirement of your room heater. It should be not more than 15 amps. Check and retighten the connections to the heater.
Install a new 15 amps breaker.

Nov 21, 2011 | Circuit Breakers & Wiring Panels

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.

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1 Answer

I have an Electric Furnace rated at 45 Amps/240v. Would a 45 amp breaker suffice for this unit?


Most likely not.Heating equipment circuit breakers have to be calculated at 100% of the load continuous. That would mean the circuit breaker would have to be rated at 45amps continuous. Most breakers are not. Most breakers are rated at 80% of their rating for continuous loads. So if you installed a 60 amp circuit, 80% of 60 = 48 amps. This would fit your requirement. That would be a 60amp breaker, with #6 cu conductors.

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1 Answer

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Hi, Here is my clarification of the instructions for you. The photocell must be protected by at least a 10 amp circuit breaker. The photocell may be installed next to the light fixture. ( not the breaker). Good Luck, this should Fixya!

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