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A breaker trips when its rated current has either been slightly exceeded over a period of time or grossly exceeded instantaneously.

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11y ago
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11y ago

A short circuit on the system will cause a breaker instantaneously trip.

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Q: What may cause breaker instantaneously trip?
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Will cobwebs trip a breaker?

No, cobwebs alone will not trip a breaker. Breakers are designed to protect against overloading and short circuits, not cobwebs. However, if the cobwebs accumulate and cause insulation damage, it could potentially cause an electrical issue that may trip the breaker. Regular cleaning and maintenance can help prevent this.


What is the max load on a 30 amp breaker?

The maximum load on a 30 amp breaker is 30 amps at 40 degrees C. If the ambient temperature is higher that 40 degrees C then the breaker will trip at a lower current. Keep in mind the breaker is a dual function device. On a short circuit the magnetic component will trip the breaker instantaneously. If you are designing a branch circuit for a load that is constantly on, code may require you to "derate" the branch by 20 percent so that the ordinary load is not at the rated load of the overcurrent protection.


Can start amps of 27 trip a 15 amp circuit breaker?

Of course! There may be a rare case where a spike of very short duration above 15 A won't trip the breaker, but in the case of a motor startup it should trip.


How many amps doe it take to trip a 20 amp breaker?

20 amps on the circuit will trip it unless it is is broken. Then it may trip with a lower current or not at all... Any resistance added to the circuit from a bad or dirty connection will add to the total current causing it to trip sooner than expected.


What cause circuit breaker to trip when refrigerator plug in?

If you can plug the fridge into another outlet and it comes on, then the issue is either a bad outlet connection or the circut breaker may be going out and needs replacement. Try the fridge on another outlet 1st. If it trips that one too then there is a short in your fridge.

Related questions

Will cobwebs trip a breaker?

No, cobwebs alone will not trip a breaker. Breakers are designed to protect against overloading and short circuits, not cobwebs. However, if the cobwebs accumulate and cause insulation damage, it could potentially cause an electrical issue that may trip the breaker. Regular cleaning and maintenance can help prevent this.


What is the max load on a 30 amp breaker?

The maximum load on a 30 amp breaker is 30 amps at 40 degrees C. If the ambient temperature is higher that 40 degrees C then the breaker will trip at a lower current. Keep in mind the breaker is a dual function device. On a short circuit the magnetic component will trip the breaker instantaneously. If you are designing a branch circuit for a load that is constantly on, code may require you to "derate" the branch by 20 percent so that the ordinary load is not at the rated load of the overcurrent protection.


Can start amps of 27 trip a 15 amp circuit breaker?

Of course! There may be a rare case where a spike of very short duration above 15 A won't trip the breaker, but in the case of a motor startup it should trip.


What would cause a breaker to trip?

A breaker will keep tripping until the fault that caused it to trip is corrected. That's what it is designed to do. There's either a circuit overload or a short circuit. How fast the breaker trips can indicate how overloaded it is. If you are very close to the rating of the breaker you can actually trip it over time. If you are definitely over the breaker will usually trip instantly. If there is a short circuit you can usually tell that by how violently the breaker trips. If you have conduit you can hear the wires banging around in the pipe. A frequently tripping breaker may also be faulty and need to be replaced - breakers are designed to fail by tripping prematurely rather than by not tripping at all, as this is much safer. This is very often the case for breakers that trip at seemingly random intervals, often when very little load is being drawn.


How many amps doe it take to trip a 20 amp breaker?

20 amps on the circuit will trip it unless it is is broken. Then it may trip with a lower current or not at all... Any resistance added to the circuit from a bad or dirty connection will add to the total current causing it to trip sooner than expected.


Why do you need a shunt trip breaker?

A shunt trip breaker is installed like any other molded case breaker. The only difference is that it has an internal tripping coil that is usually connected to a C.T. The breaker is usually mounted in a MCC cabinet The top of the breaker is bolted to the MCC bus bars and the bottom of the breaker is connected to the load. The load conductors pass through the C.T.'s which induces a current into the circuit to trip the tripping coil in the breaker.


Why would a higher amp breaker trip before a lower amp breaker?

Need more information. It doesn't seem rationale that they are protecting the same circuit unless you are substituting one for the other for a test. A unit like an air conditioner may have multiple breakers and a higher value breaker may trip because the load it is connected to is drawing current in excess of the rating of breaker.


Why when you plug any laptop chargers in the house all the electrics trip?

This shouldn't occur. If only one laptop charger is causing the problem, there may be a short in this charger. If you have tried multiple chargers, I suggest looking at the laptop and seeing if it is the cause."All of the electronics" on one breaker should trip if there is a short in the laptop or charger. The whole house (main breaker at the top of the electric box, usually) should not trip. If this is occurring, you may have a problem with the particular breaker to the plug you are using as well. If this is occurring, I suggest calling an electrician unless you know what you're doing.


What cause circuit breaker to trip when refrigerator plug in?

If you can plug the fridge into another outlet and it comes on, then the issue is either a bad outlet connection or the circut breaker may be going out and needs replacement. Try the fridge on another outlet 1st. If it trips that one too then there is a short in your fridge.


What is the difference between relay and release?

Release is an inbuilt charateristic of breaker meant for breaker triping with least time whereas relay is an external feature which may may trip but can send an alarm/signal to outer world.


Can you replace your current cooker fuse 30 amp with a 40 amp circuit breaker?

A 30 amp breaker is designed to trip at an earlier point than a larger 40 amp breaker so one appliance that operates on lower amperage level could be unsafe or damaged before it could trip the higher 40 amp breaker. Also, the existing wiring may not be rated for 40 amp service.


You were changing the light bulb in your Kenmore dryer with the power on and hit the hot terminal on the dryer causing a spark the house breaker does not seem to be tripped. model?

It takes a finite amount of time to trip a breaker. The short you caused may not have tripped the breaker. If the dryer is no longer working there may be an internal reset that has tripped.