Question about Cutler Hammer 100 Amp Main Breaker Resident Load Center

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I am installing a Siemens 30 Space, 30, Circuit, 100 Amp, Main Breaker, Indoor Load Center, Copper Bus Bars and want to know what gauge of wire I should run from the meter to the 100 amp breaker

I don't want to go way over board but still be safe.

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  • Master
  • 843 Answers

I don't mean to be flip, but if you have to ask, you really shouldn't be doing this yourself. You might need to look this up in the "code", but if you don't already know where to look it up, then you are crossing a big DIY danger line here. Good luck and be safe!

Posted on Dec 04, 2012

  • Steve White Dec 04, 2012

    We have no code in the small village I live in. I did look some up and didn't know if #3 was enough or not...

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SOURCE: Ground Fault circuit Breaker trips each time a load is applied

The most likely causes in their order of probability are: 1) water somewhere in the circuit causing the hot wire to ground; 2) a legitimate trip caused by a defect in a device plugged into the circuit; and 3) a defective GFCI breaker. In the first case, wait until it has been dry for about a week and see if it trips. In the second case, make sure there is nothing plugged into the circuit and try resetting. In the third case go ahead and put the regular breaker in, then put a GFCI outlet into the first box downstream from the breaker. If installed according to the directions, that outlet should protect all of the outlets downstream.

Posted on Feb 27, 2009

gotgeek2
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SOURCE: 100 amp CH breaker does not seat on older CH main

You can Google the catalog number for that breaker. You can also try to call local electrical contractors as one can usually find at least one contractor who has saved every old part that they have removed over the years. Also try ebay.
Unfortunately, even if you do find the correct breaker it will probably be very expensive :-(

Posted on Dec 10, 2009

SOURCE: Can a Cutler Hammer 2 pole 100 amp CH series

I answer questions for free
I specialize and timers and electrical devices
Looking up your breaker at Eaton, I found the chart that shows below:
Other than the chart, I do not know the specifics of your breaker.
You can add a comment, and I can help you with your wiring project.
Another good source of information about specifics are your local Graybar electric supply house, or any local supplier that specializes in electric wiring.
Having a local electrician stop by and look at your project for a fee might be a good investment long term because that person knows local codes and restrictions.

http://www.eaton.com/EatonCom/Markets/Electrical/Products/ResidentialProducts/CircuitBreakers/CHStyle34-inchBreakers/index.htm?ssSourceNodeId=4522&ssSourceSiteId=EatonCom

d548e07.jpg
The #1 Data Table from manual shows CU/AL which is copper/aluminum
2/0 wire fits CH145 CH245 CH150S breakers

See the manual
http://waterheatertimer.org/pdf/SA00400006E.pdf

Posted on Nov 02, 2010

  • 4 Answers

SOURCE: I AM DEALING WITH A

It sounds like you have a main lug only panel. They are for sub panels where a main breaker isn't needed. I would return it and get the right one.

Posted on Dec 12, 2010

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2 Answers

Should the main breaker be cut off to remove a trilliant square d breaker, 30 amp double....suggestions on best way to remove breaker if avaiable


I'm a licensed electrician with 24 years experience, and I Shut everything Off when I'm working, if the main is off the bus bars in the panel will be de energized making it safer to remove and install Keep in mine the power is still on at the main breaker terminals ! then the breakers install feet first then snap into the bus bars.... I Really hope this helps and Please Be CAREFULL

Feb 21, 2015 | Square Electrical Supplies

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What gauge wire do I need to put a sqr d 100 amp subpanel 33 feet away? ... is # 6-3 too small?


According to my sources you need to use size #1 AWG copper wire for a 100 Amp circuit. #6 wire can only handle 55 amps.

Jan 04, 2012 | Siemens 100 Amp Main Breaker Renovation...

1 Answer

My question is on the main 100 amp breaker it has one slot on each side of the breaker .so one hot wire goes on the right side and one goes on the left side ? its a little confusing because usually both...


A main breaker accepts two inputs which are 180 degrees out of phase. If this is in the US, then each phase is approx 110V relative to ground (or neutral) and the the two phases are approx 220V relative to each other. There are two hot bus-bars in the panel, running vertically one for each phase of the main breaker. If you look at how these bus bars are connected to the branch breakers, you will see that every-other breaker slot in the panel is connected to one phase or the other. So if you have a 220V branch breaker, say for the stove, this is really two breakers together, one for each phase. These 220V branch breakers do have output lugs right next to each other. The main breaker is similar in that it is also two breakers connected together. But because the main breaker is mounted at the top and is as wide (or nearly as wide) as both sets of branch breakers (down the left and down the right) it is generally more convenient to wire the inputs to the left and right side of this main breaker. But the location of the input lugs to the main breaker is arbitrary. There may be some models where the inputs are adjacent to each other. If you have any doubt, do a continuity test on the main breaker (while it is NOT installed) to confirm that that each input lug is connected only to one output clamp (that is, where it connects to it's bus-bar.) I hope this helps, please vote if it did. Good luck, Al K

Jul 20, 2011 | Siemens 100 Amp Main Breaker Renovation...

1 Answer

We just started noticing that, when running the dryer, there's a smell coming from the breaker box. It smells like something electrical burning. The circuit breaker for the dryer was a little warm,...


A burning smell from an electrical panel is never a good sign. You did what a lot of people will do, and have the same results - the problem won't go away.

The circuit breaker relies on the mechanical squeeze pressure of its metal clips to maintain solid electrical contact with the panel's bus bars. The problem is likely due to a poor connection between the circuit breaker and the panel board bus bars. Over the years, the load presented by the dryer has heated those points, weakening the metal clips, changing the metal conductivity in some cases due to pitting and arcing. Changing the entire panel is probably not required - especially if there are other unused spaces for a circuit breaker to be installed.

If this is the case, I would remove the new QO230 circuit breaker and install it in a previously unused space in the panel, instead. The bus bar here should be undamaged (since it was never used before), as would be the new circuit breaker contact clips. The damage has been done to the bus bars at the original location, and that space should never be used again. The same holds true for the old QO230 circuit breaker. Install SQD blank plates in the panel cover to keep fingers from getting inside.

Next, a current reading should be taken with an ammeter or amprobe. A 30 amp breaker should have no more than 24 amps on each wire connected to it. If yours is more than that, something is wrong. If it is not more than 24 amps, measuring the voltage at the breaker and the dryer plug should be done as well. The voltage at the plug should not be more than about 3% lower at the plug.

If there is no more room in the panel, a secondary panel can be installed adjacent to and fed from the original panel, space permitting. Move the dryer circuit to the new panel and any two adjacent poles of circuits (for a 240 volt feed). The dryer circuit breaker space will be abandoned and the two additional poles will be fitted with a new QO circuit breaker to supply the new panel. Your electrician should do this work for you. This is "permit required" work and must be inspected for your safety.

I hope this helps and good luck. Please rate my reply. Thank you.

Jun 01, 2011 | Square D Qo 200 Amp 40 Circuit Indoor...

1 Answer

Just installing the 200 amp panel and would like to know where the bare copper ground is supposed to hook up? Is it on the opposite end of the neutral bus?


All neutrals and all ground wires connect to the neutral bus. Where you connect them on that bus is simply a matter of being tidy and leaving room for future work. Of course your physical ground (the one going to the copper rod pounded into the earth) must be connected to this bar too.

Jan 27, 2011 | Siemens 200 Amp Main Breaker 30 Spaces 40...

1 Answer

100 amp federal pacific stab-lok panel. It has a 70 amp main breaker, can I up-grade to 100amp? 41 year old home, copper wire, many empty slots in panel


I would recommend replacing the panel. You will pay just as much for one breaker as you would for a new panel. Please up grade ....Federal Pacific is not a safe panel to have. Breakers are know for not tripping. Please research to gain knowledge on FP...Jim

Dec 04, 2010 | Pacific Industrial 100 Amp Federal Pacific...

2 Answers

How do I run from a 100 amp main panel to a 60 amp subpanel, 125 from my house to the garage


See 60 Amp sub-panel image

Above image shows drawing of 60Amp sub-panel located next to main panel. Drawing shows #6 wire... 125' distance to garage calls for #4 wire. I ran #4 to my barn and have no problems.

Give thought to how many new breakers you want at garage.
See photo of subpanel that holds three 240V breakers

Using drawing as a guide. Replace existing 240Volt breaker with new 60 Amp breaker. Two hot wires connect to new 60 Amp breaker. Neutral connects to neutral busbar.

More space: You can free up space in main breaker box using a tandem breaker. Or by doubling up 2 lightly used 120V circuits onto one breaker. Do not double-up on 240 Breakers

Conduit: You want PVC conduit large enough to fit three #4 wires. Bigger conduit is easier to pull wires ... and maybe later ethernet wire, or alarm wire etc.

Ground wire: You can put a ground rod at garage and run #6 bare copper between sub-panel neutral-busbar and ground rod. Attach ground wire firmly with grounding clamp.

I want you to check with local electrical supply for exact code in your area concerning conduit requirements, grounding, and wire size. Tighten all lugs very tight against wire.

Oct 03, 2010 | Siemens 100 Amp Main Breaker Renovation...

1 Answer

What gauge wire do I need to lead into the BR816L125R load center? it is going to the feed through lugs off my 200 amp service breaker.


Hi .. If the load center is next to the main panel you can use #2 copper or #1aught aluminum. You need to use 4 wires .. two hot, neutral, and ground. And in your load center you will need a 125amp main breaker and you will need to keep the neutral bus separate from the box, do not use the bonding screw. You will then need to install a ground bar to the back of the box for the ground wires connection.
any thoughts, questions.?

Jun 19, 2010 | Cutler Hammer Cutler-Hammer...

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