Why is an electric fuse required in all electrical appliances Class 7?

Since the current in series remains the same, the fuse wire gets melted and breaks the circuit thereby protecting the appliance from getting damaged. Hence an electric fuse required in all electrical appliances for the protective reason of the appliance.

Why is it essential to use fuse in all electrical appliances?

Once a fuse detects over current flow in the circuit, it breaks and makes the circuit an open circuit, so that no more current flows through the circuit. Therefore, it is important to include a fuse in the circuit of an electric appliance in order to maintain its safety.

Why is it necessary to provide a fuse in an electric circuit?

In electronics and electrical engineering, a fuse is an electrical safety device that operates to provide overcurrent protection of an electrical circuit. Its essential component is a metal wire or strip that melts when too much current flows through it, thereby stopping or interrupting the current.

What is a fuse how does it protect electrical appliances?

The fuse breaks the circuit if a fault in an appliance causes too much current to flow. This protects the wiring and the appliance if something goes wrong. The fuse contains a piece of wire that melts easily. If the current going through the fuse is too great, the wire heats up until it melts and breaks the circuit.

What is electric fuse Class 7?

Fuse is a safety device that is a safeguard to all of our electrical appliances. They are made up of special material which melt quickly and break when large electric currents passed through it.

Which Mark is necessary on electric appliances?

ISI mark is the mark necessary for appliance approval.

What will happen if fuse is not used in electrical appliances?

Answer: If a fuse is not is not inserted in household electric wiring, the fault current flowing in the defective circuit will cause heating and potentially cause a fire before the upstream protection opens the circuit.

Can we use the same fuse for all electrical appliances explain?

Different types of fuses As a rule of thumb, fuses are rated according to the power rating of the appliance. If you have to replace a fuse, it’s essential, having checked and corrected the reason for the fuse blowing, to replace it only with another of the same rating.

What are the advantages of a fuse?

Advantages:

• Fuse is cheapest type of protection in an electrical circuit.
• Fuse needs zero maintenance.
• Operation of fuse is simple and no complexity is involved.
• Fuse has the ability to interrupt enormous short circuit current without producing noise, flame, gas or smoke.

Is a fuse necessary?

You need a fuse if you want to limit possible damage if something got shorted. This is defenetly possible with non-protected LiIon batteries for example. For low-voltage applications there are self-healing fuses (often found on motherboards, especially for USB protection).

How does a fuse protect electric appliances from being damaged?

Q15) How does a fuse protect the electric wiring (or an appliance) from being damaged? Solution: A fuse is used in live wire to prevent short circuits. The fuse wire gets heated up and it melts and creates a gap in the live wire and current cannot flow through it and the appliance is saved from being damaged.

How does use of electric wire prevent electric appliances?

The fuse in a wire protects the electrical appliances by breaking the circuit caused by the excessive flow of current. Thus, the wire melts due to the heat generated by this current and protects the appliances.

Why is a fuse used in an electrical circuit?

Why is a fuse used in an electrical appliance? An electric fuse is a safety device used to limit the current in an electric circuit. The use of a fuse is to safeguard the electric circuit and the electric appliances connected in the electric circuit from being damaged.

What happens when an electric fuse blows?

If a high current occurs from a short circuit or an overloaded circuit, the wire inside the electric fuse melts. This breaks the circuit, and the current stops flowing. An electric fuse essentially gives up its life to stop the flow of electricity. These fuses have protected a a circuit and are considered burned or blown.

How to choose the right fuse size for your circuit?

We can also select a fuse size by the wire’s size in the circuit or by the circuit’s capacity. In this case, we would choose the fuse size to protect the wire, according to the wire’s rating. A correctly fused circuit will not overheat in the event of an overload because the fuse will blow.

What happens when an oversized fuse causes a fire?

An oversized fuse can allow too much current to flow. This defeats the purpose of using an electric fuse as a safety device and allowing an overloaded circuit to heat up to the extent that it causes a fire.