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A short circuit is a low resistance connection where one is unexpected. It causes a diversion of current from the intended load, and, since it is usually a higher than expected current, it often causes the protective device (fuse, circuit breaker, or relay control logic) to trip.
Wiki User
∙ 13y ago
Wiki User
∙ 10y agoAn open circuit is caused by a short circuit if the proper protection is included in the circuit. If there is no circuit protection in the circuit, the circuit conductor will continue to draw a high amperage until the conductor becomes so hot that it melts. This melting will usually open the circuit but not before other damage is done to other components of the circuit.
Wiki User
∙ 14y agoMyriad of reasons over stressing devices either in voltage current or the sum of the two.
Environment is also a potential that cause of failure causing short circuit.
Wiki User
∙ 12y agoa current bypassing a load
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What is shot circuit?
When there is a very current flow with virtual no voltage caused a hard wire short
What is a circuit with no load?
An open circuit or a short-circuit (if that circuit is complete).
Can different rating circuit breakers have the same short circuit characteristics?
Yes, different amperage rating circuit breakers can have the same short circuit characteristics.
Can switchboard explosion cause short circuit?
A short circuit is what usually causes a switchboard explosion.
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.
The difference between short to a voltage circuit and short to a ground circuit?
A short circuit is an abnormal connection between two nodes intended to be at different voltages. A voltage circuit is caused intentionally for the purpose of voltage sensing. A ground circuit occurs between a phase and the ground.
Why is a short circuit caused when water is spilled on a machine?
Because water is a conductor, and being fluid as it is, when spilled and falls into the machine, makes contact between or within a circuit that completes the circuit short.
What are the safety features available in a breaker?
To detect and open the circuit if a thermal overload is present and to detect and open the circuit if a short circuit caused by a magnetic increase of flux in the circuit.
What is shot circuit?
When there is a very current flow with virtual no voltage caused a hard wire short
When you will get to know that short circuit will happen?
1. That if a short circuit occurs we will get a sign before short circuit will happen or not ? 2. what we can do ? 3. how fuse can get a short circuit ? 4. which wires we have to use from preventing short circuit ?
Function of a breaker?
The purpose of a circuit breaker is to open the circuit in the event of an overload. Wires/conductors are only rated for a specific Amperage. If this amperage is exceeded the conductor/wire begins to heat up and given enough time it becomes a fire hazard. For instance a 15 amp breaker will trip once the Amps drawn through that circuit exceed 15 amps. The short answer is to keep you safe.
What caused the explosion on Apollo 13?
Damaged insulation on the wires to the stirring fan inside oxygen tank 2 caused the wires to short circuit and ignite.
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.
Can a circuit breaker be locked in the on position to stop inadvertent switch offs?
No, this isn't necessary. The circuit breaker protects your home by avoiding an overcharging caused by a short-circuit. It's advisable blocking the access to the breaker.
Will a short circuit cause smoke detectors to beep after resetting the circuit breaker?
If your smoke detector is bleeping you have a serious risk of fire and the circuit breaker must not be reset until the fault that caused it to trip is investigated.
Why are fusses not good for short circuit currents?
A: FUSES are very good for short circuit protection. On the other hand a short over current may not make the fuse to blow since it requires heat caused by the current to blow. There are fuses that are meant to blow fast and some fuses are designed to blow slow depending on the circuit requirement
Is a megohm a short circuit?
No. A short circuit would be zero ohms.
