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Circuit Breakers vs. Fuses: Key Benefits

Circuit breakers offer more protection than fuses in several ways. Unlike fuses, which simply melt when there is too much current, circuit breakers can trip to stop the flow of electricity and also contain a backup metal strip like a fuse. If a circuit breaker trips, it does not need to be replaced - the homeowner just needs to flip the breaker back on. This prevents fires that can occur if an overloaded fuse arcs. Circuit breakers also make it easier to identify and reset tripped circuits without replacement or guesswork.

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Ezeldeen Agory
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47 views2 pages

Circuit Breakers vs. Fuses: Key Benefits

Circuit breakers offer more protection than fuses in several ways. Unlike fuses, which simply melt when there is too much current, circuit breakers can trip to stop the flow of electricity and also contain a backup metal strip like a fuse. If a circuit breaker trips, it does not need to be replaced - the homeowner just needs to flip the breaker back on. This prevents fires that can occur if an overloaded fuse arcs. Circuit breakers also make it easier to identify and reset tripped circuits without replacement or guesswork.

Uploaded by

Ezeldeen Agory
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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q- What is the relation between the fusing current and the diameter of the wire?

a. I = k d3
b. I = k d3/2
c. I = k d2
d. I = k d2/3
ANSWER: I = k d3/2

Why Are Circuit Breakers Better Than


Fuses?
Circuit breakers and fuses are both designed to disrupt the flow of power
when current levels exceed safe amounts. However, circuit breakers are safer
and easier, offer more protection and don't need to be replaced.

Two Protections
Unlike fuses, which have only a metal strip that melts when power levels get
too high, a circuit breaker has two protections. First, if current levels get too
high, the circuit breaker will trip, disrupting the flow of electricity. However,
if the breaker fails to trip, circuit breakers still contain the little metal strip
found in fuses, which will melt and protect your wiring.

No Need to Replace
When a fuse disrupts an electrical flow, it burns out and must be replaced. A
breaker does not. When a breaker trips, a homeowner simply has to flip the
breaker back on to reestablish the current.

Fire Safety
If a fuse becomes too overloaded, electricity can arch and start a fire. Since a
circuit breaker actually turns the flow of electricity off instead of disrupting
it, fire is not a risk with circuit breakers.

Circuit Breakers Are Easier


With circuit breakers, you don't have to go through the trouble of finding a
replacement fuse. Circuit breakers are turned back on simply by flipping the
switch.

No More Guesswork
Unlike fuses, which you have to take out one at a time and check, most
circuit breakers have some visual indication, normally a little window that
turns orange, that tells you when the circuit has been tripped.

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