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Because the fuse is designed to limit the current in the circuit. Using too many appliances draws excessive current from the mains, causing the wire in the fuse to melt - and thus it cuts the circuit. If it didn't, the excessive current would melt the house-wiring - possibly starting a fire !

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12y ago
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15y ago

Because they are drawing in more power than the fuse is designed to allow through.

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Q: Why does using too many electrical devices at the same time often ''blow'' a fuse?
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What is the Characteristic of slow blow fuse?

It depends on the precise type of slow blow fuse, but in general terms a fuse with a slow blow characteristic will take longer to operate (blow) at high overload currents than one with a normal characteristic. For low overload currents it will operate in about the same time as a normal fuse.


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Sure, why not?


How do you temporarily paralyze a arm?

Chin. A blow to the chin can cause paralysis, mild concussion, and unconsciousness. The jawbone acts as a lever that can transmit the force of a blow to the back of the brain where the cardiac and respiratory mechanisms are controlled. Back of ears and base of skull. A moderate blow to the back of the ears or the base of the skull can cause unconsciousness by the jarring effect on the back of the brain. However, a powerful blow can cause a concussion or brain hemorrhage and death. windpipe. A forceful blow causes extreme pain and gagging or vomiting all will temporarily stun or paralize the opponent


Can a lighter blow up?

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You exceed the power dissipation capability of the device and it burns up. Too much voltage across the terminals , too much current being passed through it, reverse voltage spikes can all cause the triac to "blow".

Related questions

Why does using too many electrical devices often blow a fuse?

Because of the high power usage. Often when alot of power is concentrated in one place a fuse could blow. Also sometimes there are dodgy PowerPoints and connections and can short out the whole house.


Are fuse used to detect electrical energy?

Fuses are overcurrent protection devices. If voltages get extreme they blow to save other components. So yes in a way they detect electrical energy.


What is a sentence for the phrase blow out or extinguish?

When you are presented your birthday cake, make a wish and blow out the candles. An electrical surge will often cause an overload and blow out a fuse.


Can you use a 13A fuse for a 250w appliance?

If you don't know Ohms law, or how a transformer alters voltage and current in most devices, you probably shouldn't be trying to modify an electrical circuit. Use whatever the manufacturer recommends. Using a smaller fuse may or may not work, but won't hurt anything (the fuse may blow more often). Using a larger fuse than recommended will risk damaging the device, or possibly whoever is using it.


What will happen to electrical devices if overloaded?

An overload condition is demanding more current than can be supplied. This could trip a breaker, blow a fuse or possibly destroy a device that is drawing too much current.


What occurs when a pathway through which electrical charges can move forms suddenly?

If that pathway is to ground, it is called a short circuit. It should blow fuses or circuit breakers but can cause fires if protective devices are not functioning right.


Benefits and dangers of electrical energy?

if you touch an electrical appliance with wet hands while its on it can blow


Why will too many electrical devices operating at one time after blow a fuse or trip a circuit breaker?

The load exceeds the limit of the breaker or fuse. For example a 20 amp breaker on a 120 volt circuit will handle 2400 watts. Exceed that wattage and the breaker will trip or the fuse will blow.


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it can blow a circuit


Why did your electrical socket blow up?

:( by much heating and over used.


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It seems you have an electrical short somewhere.


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On the average, it most often blow horizontally.