Electric Furnace Trips Breakers

You need to use rated breaker and did you find a fault for why the breaker shorted?

If you have a heat pump you usually have 1st & 2nd stage emergency heat . Your 2nd set of elements may be bad. You can test this with a meter by ohming across each element and it should read a ohm value. Then ohm from the element to ground and it should read OL if it does not it is shorted. Also 100 amp breakers for some reason always fail I have changed more 100 a breakers than any other size. You can also get an amp probe and turn your thermostat up and read the amp draw to see if it is close to 100a. Hope this helps

Electric furnace I assume- check with amp meter, if amps are below listed on breaker, replace the breaker, [check both the breakers in the furnace and in the house pannel, even if only one is tripping right now, the other(s) may start doing the same thing after you eliminate the weakest link- don't be surprised!] electric furnaces are notorius for "eating" breakers- they overheat the breakers for years then the breakers get weak and trip too easilly... if gas, post more info and I'll try to help further.

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.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Yes they get weak over time.
The main will trip when it senses heat.
Use hand to feel if main breaker is getting hot.
http://waterheatertimer.org/Troubleshoot-household-electricity.html#stress
http://waterheatertimer.org/How-to-replace-circuit-breaker.html

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Hi,
Please check the currents draws and check your breaker size. If your furnace always trip off, check the system for malfunction. Normally manufacturer install the breaker with specific standard to protect your furnace from damaged

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.

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

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

If you are not familiar with electrical wiring, I would suggest an electrician. NEVER TRUST COLORS! Most of the time, white goes with white, black with black, red with red, and bare to bare. But depending upon whether this is a 110 or 220 they could be mixed up depending upon how the feed wire is wired at the box. Hope this helps! c