What would happen if we replaced the wire in a fuse with thick copper wire?

If the wire inside the fuse (i.e. Tungsten Or Nickrome) is replaced with thick Copper (Cu) wire, it will melt inside and the Glass may break. Because Copper cannot withstand the high electric current.

What are main disadvantages of fuses?

Disadvantages of fuse:

• It is not suitable for overload, at that time fuse blow off replacing of fuse takes time.
• The protection of fuse is not reliable.
• Low breaking capacity.
• Fuse is slow compared to circuit breakers.

Why is it not advisable to use a piece of copper wire as fuse in an electric circuit?

No, we cannot use copper wire as fuse wire because the melting point of copper is higher and resistance is low and hence, current can flow through it without melting it or breaking the circuit and it can’t be limited.

Why a fuse wire should never be replaced by a copper wire?

Copper has a higher melting point than the tin used in fuse wire. So, when a high level of current runs through copper wire, it continues to heat but will not melt. Instead, it causes a short circuit – potentially ruining your appliance and sparking a fire.

What happens to the functioning of safety fuse when the fuse wire is replaced with one having more thickness?

The resistance of a conductor is proportional to its length and inverse proportional to its cross-sectional area. So, If the fuse wires are thick, the larger cross section decreases the resistance across the fuse wire. So, even a high current flows through the fuse, it doesn’t blow out.

What are advantages and disadvantages of fuses?

The operation time of fuse can be made much smaller than operation of circuit breaker. It is the primary protection device against short circuits. It affords current limiting effect under short-circuit conditions. Fuse inverse time current characteristic has the ability to use for over-load protection.

What is a fuse wire what is the advantage and disadvantage of using a thick fuse wire?

Explanation: The resistance of a conductor is proportional to its length and inverse proportional to its cross-sectional area. So, If the fuse wires are thick, the larger cross section decreases the resistance across the fuse wire. So, even a high current flows through the fuse, it doesn’t blow out.

Why is it advisable to use copper wire as a fuse wire?

Copper is used in normal wiring due to its high melting point. Copper with a higher melting point won’t melt easily when there is a current overload and thus allow high current to flow through causing extensive damage to the components connected with it.