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Furnace keeps tripping the breaker changed breaker and wires all good up to the furnace still keeps tripping when i try to turn power on. nothing happened to the furnace and the wires were tested up to the furnace all good and dusted and cleaned the old round thermastat . breaker will not even reset .

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Disconnect the black power wire where it is connected to the furnace with breaker off. Put a wire nut on it and then turn the breaker on. If it continues to trip, the problem is not the furnace and you will have to trace the power wire back to the breaker box to find problem. Next, disconnect the black wire from the breaker (with breaker off) and then snap breaker on. If it trips, bad breaker. If the furnace was disconnected and breaker did not trip, you have a short either on the P C Board or the transformer.

Posted on Mar 31, 2011

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


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.

Nov 04, 2012 | Bryant Westinghouse Bqc Quad Circuit...

1 Answer

My breaker trips when the outside unit tries to turn on. The inside furnace runs. I cut the inside unit off and the breaker doesn't trip. I manually turn on the outside unit by depressing the cont


Hello, there is a short to ground somewhere, check all the wiring from the inside un it to the outside unit and make sure nothing is touching metal.

Jun 10, 2012 | Goodman Heating & Cooling

1 Answer

We have a 1999 "Thermal


DO NOT install a 20 amp breaker, you can cause a fire. The breaker is rated for the WIRES, and unless you change out the wires, the 15 amp wires will overheat and can cause a fire.
Typically, A/C units need dedicated power, with nothing else on that circuit.
One step that you may try is a new 15 amp breaker. Once a breaker starts tripping, is starts tripping earlier....
You may wind up running a new circuit for the A/C, if you do, size it for the A/C.

Jul 18, 2011 | Heating & Cooling

1 Answer

Have Challenger Type C 2100 circuit breaker in residential home electrical panel. Manually turned to off position and now cannot turn back on. Pops back to off position. Also says HACR type and common trip...


First HACR is heating, air conditioning,refrigeration. So in other words you could use it on an electric furnace or air conditioning.
IS this the main breaker for the panel? or for and electric furnace. I'm assuming its for the furnace, perhaps back up heat for heat pump. See if there is another disconenct on the furnace, turn it off and see if the breaker resets. IF so you have a short or overload in the furnace.
If' it IS the main for the panel, turn off all the other breakers in the panel, and try to reset the breaker. If that works, turn the other breakers back on one at a time. IF it "POPS" then it is tripping. Don't keep resetting, find the problem.

Jul 19, 2010 | Challenger Connecticut Electric UBITB-A230...

1 Answer

THERMOSTAT HAS NO POWER


Hi, yes the thermostat feed does come off the furnace from the transformer. That's where it gets it 24 volt supply, 120 volts is stepped down to 24 volts for the controls. If it trips the main breaker, it may be a matter of the wires that feed the breaker are loose and this will cause the breaker to over heat and trip. Shut it off and tighten the wires.The breaker may also be weak. This is a high voltage problem. So, anything that runs off of this breaker can cause it to trip, like the blower motor may be drawing to much amperage. Make sure there is no lint build up on the motor or in the windings or on the blower wheel also. My guess would be the breaker is burned or wires are loose creating enough heat to trip it at times. This is where you will need to start. Keep me posted. If you have a amprobe you can check the rated amps on the data plate of all motors and see what they are drawing under a load. If not, you will have to see whats getting hot, breaker, motors ect. Keep me updated as you will be able to find the problem. Like I said, my bet would be the breaker is going. You can also kill power and pull the breaker to look for any hot or burned spots on it. Concentrate there first.
Best of luck, you should find it quickly.
Shastalaker7

May 24, 2010 | Heating & Cooling

2 Answers

Circuit keeps tripping everytime the heat (electric) goes on. Do we need a bigger fuse?


changing the fuse is not a good idea. The fuse is there to protect the wiring going to the furnace. You may want to consult an electrician to make sure the fuse, wire, and loads are compatible. The furnace should be on a circuit by itself

Jan 07, 2010 | Heating & Cooling

1 Answer

My electric furnace keeps tripping the breaker , it will run for about five or ten minutes then trips.


If you dont have an ampmeter it is hard to tell whats going on. First check the breaker and see if it is getting hot. If so turn off power get a screwdriver and check to see if wire are tight on the breaker. Loose wires cause breakers to trip. If the unit has ran before and it has not tripped the breaker and it hss just now atarted replace breaker but do not put a larger one in. Check the size of your heat strip in Kw or what they call for on the size of the breaker. 10 kw no larger that 60 5kw no larger than 30. 15 kw has a 60 amp and a 30 amo circuit. Let me know whats going on.Rus

Dec 07, 2009 | Refrigerators

1 Answer

30 amp breaker trips intermittently


It sounds like this circuit breaker is worn out and needs to be replaced. good luck

Jan 19, 2009 | Siemens 2 pole 30 amp breaker

1 Answer

Electric furnace wire heating up


you should have a 3- conductor # 6-3 copper wire running to this 60 amp breaker @ the furnace to the panel if this is not the case you should replace this with a # 6 as of now as it is a fire hazard as it is and needs to be fixed at once , # 10 -2 wire is only good for 30 amps and a 60 amp breaker will not trip under fault condition and you could have a fire , if you need further assistance on this let me know and i will try to help

Jan 09, 2009 | Electric Circuit Breaker Kit for Furnace

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