Why Nichrome wire is not used in fuse wire?

The mechanism of breaking the fuse wire is the maximum current in the wire produces high heat, because the heat in the wire exceeds the melting point of the wire, the wire will melt and eventually the wire would break up [4-8]. Some wire conductors being sold in the market are copper and nichrome [9-10].

Is Nichrome used for making fuse wire?

The heating wire can be straight, ribbon or coiled. The materials which are used to make heating wires have a very high melting point, the most commonly used material to make heating wires is Nichrome; it is an alloy of nickel and chromium. Alloys of tin and lead are used to make fuse wires.

Why fuse is not made of copper?

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.

Does Nichrome have high melting point?

Properties. Nichrome is consistently silvery-grey in colour, is corrosion-resistant, and has a high melting point of about 1,400 °C (2,550 °F).

Is Nichrome a good conductor of electricity?

Nichrome is a good conductor, being a metal having resistivity much higher than all insulators. However, its resistivity is much higher than copper or aluminium, which makes resistance from this metal large enough to get a workable value in very small dimensions. Hence it is used as a resistance material.

Why does a Nichrome wire get heated in an electric current whereas Nichrome does?

Why does a nichrome wire get heated in an electric circuit whereas nichrome does? Nichrome due to its high resistivity does not allow the electric energy easily to pass through it. This electrical energy is changed into heat energy. So nichrome wire gets heated in an electric circuit.

Why Nichrome is used in electrical devices?

Note: A nichrome wire is used as a heating element because of its high melting point and high resistivity (low conductivity) also. Having a high melting does not allow the nichrome wire to melt easily when a large amount of heat is produced. Hence, nichrome has high resistivity and low conductivity.

Why is Nichrome used for making wires of heating coils?

Nichrome, a non-magnetic 80/20 alloy of nickel and chromium, is the most common resistance wire for heating purposes because it has a high resistivity and resistance to oxidation at high temperatures. When used as a heating element, it is usually wound into coils.

Why pure metal is not used in fuse?

Fuse wire is made of a tin-lead alloy and not copper because of the following reasons: 1. They have high resistance due to high resistance the wire heats up quickly, when large current flows. In Fuse wire a copper wire can not be used because it has a high melting point.

Why is Nichrome used as a heating element?

Note: A nichrome wire is used as a heating element because of its high melting point and high resistivity (low conductivity) also. Having a high melting does not allow the nichrome wire to melt easily when a large amount of heat is produced.

Why Nichrome is not used as a filament in bulb?

Nichrome is not used as filament in incandescent lamps. Why? Answer: It can remain only in red hot condition but it can’t give light.