Let s explore these reasons in detail and find out what you can do to fix a furnace breaker trip.
Furnace circuit breaker code.
1 why does my furnace need electricity.
How afcis work a conventional circuit breaker isn t sensitive enough to detect electricity arcing through the air while the arc is.
According to building codes a furnace must be supplied by a dedicated circuit meaning the circuit cannot supply power to anything other than the furnace.
How the furnace switch works.
This will create afci protection to only the receptacle being replaced.
The most common reason that a furnace trips a circuit breaker is that the blower is overworking.
A bad furnace fan motor or component.
So the question here is whether or not it s allowable to use a lock at the circuit breaker for a furnace in lieu of a separate service switch by the furnace.
Furnace breakers most often occur for a few reasons.
To get answers to electrical code.
2 6 reasons why your circuit breaker may be getting tripped by your furnace.
The most common culprit is a dirty air filter.
A furnace that starts up but immediately trips the breaker can be caused by an electrical short circuit or ground fault inside of the furnace itself.
Doing so will create afci protection for the entire circuit.
This is a job for a licensed electrician.
1 1 the blower motor in your furnace is powered with electricity.
A bad circuit breaker.
There s a leak in your hvac ductwork.
Any time that something is blocking airflow to your system your blower has to work harder to compensate.
A standard circuit breaker can be replaced with a special afci circuit breaker.
This circuit is served by its own circuit breaker in the breaker box properly called the main service panel the circuit wiring runs from the service panel to the disconnect switch and from there to the furnace.
When your air filter is clogged with dirt your blower has to work extra hard to push air.
Short circuits in your furnace happen when a bare hot wire comes in contact with a neutral wire.
Hvac air registers or vents are blocked.
Check with your municipality for local requirements and codes.
The furnace filter is clogged.
Poor airflow through the furnace.
A failing receptacle can be replaced with an afci receptacle.