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When an more than rated current passes through it, because of short in equipments or mal functioning of equipments the mcb gets tripped. The reason is magnetic contact in mcb is rated and when that rating exceeds the contact may disconnect
Wiki User
∙ 14y ago
Wiki User
∙ 10y agoA switch can cause an electrical short circuit if it has become damaged and grounds out the power. The simplest solution would be to test the circuit without the switch and simply wire the connectors together.
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What might cause a breaker to trip when switching on a light when resetting the breaker and checking the fuse doesn't restore power to one circuit?
Overloaded circuit, short in circuit, or defective switch.
What would cause a circuit breaker heating element to trip off?
There are two conditions that would cause a breaker to trip off. One is an overload of the circuit and the other is a short circuit on the circuit. The heating element within the breaker is what monitors for circuit overloads.
Rupturing capacity of a circuit breaker?
the maximum short current that can be safely break by the circuit breaker.
Is it true or false that a circuit breaker must be replaced after a short circuit occurs?
A circuit breaker must be reset to ON after a short circuit but does not need to be replaced. It depends on the type of CB. A fuse is also a circuit breaker and it needs to be replaced after a short circuit. Relayed circuit breakers have to be "picked up" after a dropout and need not be replaced as such.
Why not to overload a socket?
Yes! A socket is a part of a circuit. Usually there are a number of sockets and lights associated with a specific circuit. The wiring of the circuit and the circuit breaker are limited to a specific amperage. If you exceed the amperage, you can blow the breaker. If the wire is rated for 15 amps and the circuit breaker is rated for 20 amps, the wires can overheat and cause fires.
Why does a lawn mower keep popping the relay circut breaker?
you have a short to ground in the electrical circuit that that breaker is on.
Why did electricity along the line go out when switch was turned on?
Bad switch or a short and tripped the breaker.
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.
What is the color of the wire from the head lights to circut breaker?
how do i find a short in my head lights ,tail lights work but not my head lights
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.
You can not get a tripped load circuit breaker in the secondary distribution center to reset what would be the next corrective action?
check for an overload or short
What would you conculde if you saw if one bulb burned and all lights fail?
The bulbs are in connected series. There was a short circuit and the circuit breaker tripped.
What can a loosely connected electrical wire in a breaker panel cause?
A short, which will trip the main breaker.
What would cause a short periodic low hum to come from a circuit breaker?
A bad circuit breaker. Replace it.
Why do your headlights on your 92 crown Victoria flash while driving?
Headlights have a thermal circuit breaker. A short to the headlight (positive to ground) will cause the breaker to trip. The breaker cools and the lights come back on till the breaker heats up. Find the short and fix it.
What may cause breaker instantaneously trip?
A breaker trips when its rated current has either been slightly exceeded over a period of time or grossly exceeded instantaneously.
Why does your electricity go out in one room?
Because you have blown a fuse or tripped a circuit breaker. This is caused by a) too much equipment plugged into a single circuit, or b) faulty equipment causing a short circuit.
