# I have a new furnace and the breaker keeps tripping (20/30). It is a bryant westinghouse box. I think 200 amphes

It is a 20/30 piggyback, that keeps tripping when furnace is running,also connects to my stove. Can I put a 30/40 amp in there.I believe the circuit box is only a 200 amphes.

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• Hippy_dd Sep 15, 2016

ok after reading what you have said and the answer u got and just had to make another point. here Is a pic of the front of a book called ugly's book. this is what is called ohms law and it shows all the basic calculations. I did them on your furnace from the info I got.

it goes like so: watts/volts=amps

all breakers have to be rated at 80% of wire size. this means that for an easy calc your receptacles or outs would be on a 20 amp circuit so 20*.8=16 so the 20 amp breaker is suppose to trip at 16 amps. contact me for more help I can walk u thru it

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1) You got a FIRE truck coming.

2) Wire is too small.
Problem is NOT circuit breaker.

3) Both 240Volt appliances on same breaker is a hazard, especially if space available in 200 amp service panel for more breakers.

4) Usually each 240V appliance has separate breaker.

5) Circuit breaker trips because of High heat on the wire.
If wire gets hot, it will start a fire inside the wall.

Electric code requires wire-size match breaker-size.

6) If you put larger amp breaker on same wire that is getting hot, then wire will get hotter.
Result: FIRE truck middle of night with folks jumping out window in glass-cut bare run across yard.

7) Each appliance has volts and watt rating on label.
EVERY appliance has label.

8) For example stove might be rated 8000 watts and 240Volt.
8000 watts divided by 240 volts = 33.3 amps
Stove would require 40 amp breaker and 8 gauge wire.

9) How to figure it out:
http://waterheatertimer.org/Color-codewire.html
http://waterheatertimer.org/How-to-install-a-subpanel.html

10) Do same calculation for new furnace.
12000 watt furnace divided by 240 volts = 50 amps.
Use 60 amp breaker and 6 gauge wire.

11) Summary: fixya wants you to be safe, and buy stuff showing in the ads.
Use a bigger breaker ONLY when bigger wire is also installed.
Call furnace installer, the installer should know to check safe wiring before installing.

Posted on Nov 05, 2012

Hi,
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Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
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Goodluck!

Posted on Jan 02, 2017

It used to be you could never install more than 42 circuit breakers in a panel. If you have that many spaces you cannot install "twin" breakers in the panel. There is a rejection feature for this. Some panels will have a portion that allows twins in part of tha panel, but not all locations so you cannot exceed 42 breakers. You can sometimes tell by the legend that willshow a space divided on some positions and others not. There are many different brands that will "fit" into your panel (GE,Bryant,Murry,Arrrow Hart, Crouse Hinds, Siemens), but only use breakers listed to be used in your panel, or you will not have the protection intended. If it's 40 years old maybe it's time for an upgrade. Be careful in that panel and be aware of arc fault protection when working on engergized equipment.

Posted on Jun 30, 2010

what else is on circuit with microwave and as to grafted is that a hard wired hook up if so breaker may be to low depending on how old the unit is but before replacing it i would check microwave draw and find out if anything else is on circuit

Posted on Jan 25, 2010

Look on the label inside the door on the circuit breaker panel. It should list part numbers for acceptable breaker. The key is the part number. Bryant is now owned by Westinghouse. Murry is now owned by Siemens. While many breakers will fit in other brand panels, they are only code compliant if they are listed for that panel in which they are installed. Since names have changed go by the breaker numbers. If the breaker number you have is listed on the label then it would be ok. Breakers aren't that expensive, if you have doubt, go to your supply house that carries Siemens and buy breakers listed for your panel.

Posted on Jul 11, 2010

You should get the exact breaker number to be safe. Westinghouse is not Eaton. Here is one example.
http://www.acehardwaresuperstore.com/westinghouse-replacement-main-circuit-breaker-p-21528.html
There are many places online. 200A breakers rarely fail, unless loose connections on lugs (AL WIRE) cause overheating.

Posted on Aug 18, 2010

Hello
The spring in the breaker is worn.Best to shut off main and disconnect breaker,pull out of box and take it to a electrical hardware store.

Home depot and lowes sell many different types.The numbers you gave match nothing i can find.

Posted on Mar 31, 2011

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A 200 amp circuit breaker has a large spring to assist in rapid opening and closing a load of this size to minimize damaging arcing every time is it operated under electrical load

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