What causes fuses to blow?

Answer

Blowing of the fuse is caused by numerous reasons which are triggered when an appliance draws an excessive current. Some of the prime reasons for excessive current include mismatched loads, overloading, device failure and short circuit. The fuse blows to prevent damage on the appliance that may result from fire or overheating.
Q&A Related to "What causes fuses to blow?"
a short in the wiring system. A blown fuse is caused by a short or an over current condition.
http://wiki.answers.com/Q/What_causes_an_ignition_...
A Whirlpool dryer’s heat fuse will blow if the dryer can’t circulate air effectively. If airflow becomes blocked, due to lint accumulated in the dryer vent, it can cause
http://www.ehow.com/info_12137755_causes-new-whirl...
Often, a fuse will blow due to a momentary overload.Thanks!
http://www.chacha.com/question/what-would-cause-a-...
The fuse that blows pertains to the thermostat ? Is it the fuse to protect an a/c unit? There could be a bad connection, there is a contactor inside an older a/c unit if the contacts
http://answers.yahoo.com/question/index?qid=201206...
1 Additional Answer
Ask.com Answer for: what causes a fuse to blow
What Causes Fuses to Blow in Cars?
Electric fuses, in any application, are designed to fail when too much amperage runs through them. They are designed as a weak point to protect the rest of a given circuit from damage and fire, to and prevent electric shocks. Fuses blow by heating up and... More »
Difficulty: Easy
Source: www.ehow.com
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A fuse blow or circuit breaker trip is caused by poor wiring or power overloading; this will cause short circuiting once the wrong wires touch each other resulting ...
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