What is the function of Fuse in a circuit?
Feb 28, 2020 · How fuse is connected in the domestic circuit? The fuse in a circuit prevents over heating of the wires and appliances due to excess transfer of electric current and melts when more current passes through it. It is connected in series in domestic circuits. Fuse melts break when there is any overloading in order to protect the appliances.
Why is the fuse wire always connected in the Live Wire?
Let's explore how the domestic circuits are connected (whether in series or parallel). Also, let's learn how the fuse helps protect the domestic circuits from voltage surges. This helps us explore why we have two separate circuits, one for low power devices (with 5A fuse) and one for high power devices (with 15 A fuse). Created by Mahesh Shenoy.
Can a fuse be connected in series?
Answer (1 of 6): Domestic circuits generally consist of a single phase AC supply to a "live" wire returning via a "neutral" wire. The neutral wire is often connected to ground at a nearby distribution point, e.g. a transformer on the street outside.
What happens when a fuse is heated?
Mar 12, 2020 · Let's explore how the domestic circuits are connected (whether in series or parallel). Also, let's learn how the fuse helps protect the domestic circuits fro...
How is fuse connected in the domestic electric circuit?
ELECTRIC FUSE It is a piece of wire of a material of low melting point which is connected to the live wire in the circuit. A fuse wire is connected in series in the electric circuits. When an excessive current flows, the fuse melts and the circuit is broken.
How is fuse wire connected to a circuit?
The fuse wire is always connected in the live wire of the electric circuit because if the fuse is somehow put in the neutral wire in the circuit, then due to excessive flow of electric current when the fuse burns, current will stop flowing in the circuit, but the appliance will still remain connected to the high ...
Where are fuse connected?
live wireA switch or a fuse in an electrical circuit is always connected to the live wire so that the socket or appliance is not live when switched off.
Is fuse a circuit breaker?
The main difference between fuse and circuit breakers is that fuses cannot be reused while circuit breakers can be reused over and over again. Circuit breakers are used to protect homes and devices against overloading and short-circuiting while fuses protect devices and homes against overloading only.
Why is a fuse always connected to the live wire in a circuit?
A fuse is always connected to the live wire to break the circuit preventing the connected devices from damage. A fuse is a circuit element made of high resistance material that melts when there is overloading in the circuit.
How do you connect a fuse?
0:001:45EASIEST way to add an in-line fuse - YouTubeYouTubeStart of suggested clipEnd of suggested clipIf you take two Spade connectors these Spade connectors are very common and they fit right on to theMoreIf you take two Spade connectors these Spade connectors are very common and they fit right on to the fuse. Just crimp them right onto the wire two spade connectors. Will create your fuse holder.
Where must a fuse be connected in a main electric circuit?
live wire sideThe fuse or circuit breaker must be connected in the live wire side of a domestic circuit to ensure that it keeps high voltage from reaching the user, or surroundings, if a fault develops.
Why is fuse not connected to the neutral?
Fuse should be connected to live / phase wire of circuit. If it is connected to neutral wire, the fuse will melt when excess current flow, but the appliance will still be connected to high potential through live wire. Thus, if a person touches the appliance, he receives shock.
Why is earth wire used?
Hence, earth wire is used to prevent people from getting electric shocks.
What is a fuse in a circuit?
A fuse is a device which is used in a circuit. to prevent damage to the appliances and the circuit due to overloading. It stops the flow of unduly high electric current. Nowadays, MCB (Miniature Circuit Board) is used in place of fuse. If current becomes too large, MCB puts off a switch breaking off power supply.
Why does a wire get heated up?
This happens if insulation of both wires get torned. Current flows through wire without much resistance. Due to high current passing through wir e,wire may get heated up and may catch fire.
What is the purpose of a fuse?
An electric fuse is used as a safety device that protects electric circuits and appliances due to fluctuation, short-circuiting or overloading of the electric circuits. Fuse offers high resistance to voltage and has a low melting point. The fuse helps in breaking the circuit when overload current, high voltage or fluctuating current passes through the circuit. When heated, it melts and breaks the connection with the circuit, helping in preventing burning of other components/circuits. Hence, fuse is an integral part of domestic wiring as a safety device.
Why do we use electric fuse?
The main reason for using the electric fuse is to prevent overloading and short-circuiting. When these occur, mishaps like circuit burning, fire and shock which can lead to severe hazard can take place. When a number of electrical appliances are used at the same time, it draws a huge amount of current at the same time.
What are the three types of wires in a domestic circuit?
3 types of wires are involved in the domestic electric circuits, they are: Earth wire. Live wire. Neutral wire. Earth wire is green in colour. Earth wire is connected to metal plates placed in the earth near the house for safety purposes.
Why is live wire red?
This is done to prevent shock when leakage of charges happens in the metallic body. Live wire is red in colour. It is a positive conductor that helps to break the circuit when excess current flows through the circuit.
What happens when a neutral wire comes in contact with a live wire?
Short-circuit happens when the neutral wire comes in contact with the live wire. It happens when wires of low resistance are used or when the insulation of the wire is damaged and one wire gets in contact with another.
What is the term for the cables used to transmit power?
The cables used for the transmission and distribution of the power are known as power cables. Assembly of one or more individually insulated electrical conductors are held together with an overall sheath.
How is electricity generated?
Electricity is generated when mechanical energy is converted into electrical energy. We are also aware that electricity is a key factor to light up our homes and is the main source for the functioning of many devices like refrigerators, washing machines, iron box, dishwashers, fans, air conditioners and many more. Let us know how electricity is supplied through these devices and how power is supplied to homes. Domestic electric circuits give an idea of how power is supplied to homes using various types of switches, wires and circuits. In this article, let us make an effort to understand what is meant by domestic electric circuits in detail.
What is a fuse?
Fuse prevents short-circuits. Prevents overload and blackouts. Prevents damage that is caused due to mismatched loads. The markings on the fuse carry information such as the Ampere rating, voltage rating, and interruption rating.
Why are fuse wires used in electrical circuits?
The fuse wire in an electrical fuse is selected in such a way that it does not face any damage when the normally stipulated amount of current flows through the circuit .
Why does a fuse wire melt?
However, when an excessive amount of current flows through the fuse wire, the heating effect of current causes the fuse wire to melt. This is because the fuse wire is chosen such that it has a low melting point.
Why do we need fuses?
The primary use of an electric fuse is to protect electrical equipment from excessive current and to prevent short circuits or mismatched loads. Electrical fuses play the role of miniature circuit breakers. Apart from protecting equipment, they are also used as safety measures to prevent any safety hazards to humans.
What happens when current passes through a conductor?
When current passes through a conductor, the different electrical components of the circuit like the devices attached or even the wire itself, offer resistance to the current flow. The work done to overcome this resistance presents itself in the form of heat.
What happens if a fuse is overrated?
If it is overrated, then it will not break the circuit when required and cause equipment damage and failure and may even present itself as a safety hazard.
What is the function of a fuse?
Function of Fuse. In the field of electrical engineering, a fuse is a device that provides over-current protection to the functional electrical circuit. Here, we have listed a few major functions of the fuse. Acts as a barrier between the electric circuit and the human body. Prevents device failure due to faulty circuit operation.
