Fuse should not be connected with netural wire,why?
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Fuse should not be connected with netural wire because of the given reason, hope it helps you ✌
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The answer is simple. The current flows in excess, but the circuit doesn’t disconnect.
The same may happen if the fuse is connected to neutral. Because the fuse can disconnect the circuit only when the excess current flows completely through the neutral.
But, a circuit can complete or obtain a conduction pathway either by the neutral or earth. So, if any electric shock or earth leakage occurs, the current flows from the phase line to earth. As far as the current is not returning to the neutral, the current continues its flow. But the circuit will still have the connection to the supply. This results in an electrical damage that can cause serious loss. So, the fuse should have to place at a point where all the algebraic sum of current flows. That is the main phase line.
Also, a fuse should completely isolate the load or wiring from the supply by its burn off or on removal. Since, neutral is not a live conductor coming from the source, disconnecting a neutral line can only open the current path through neutral. But, the live phase still carries the charge. It always provides a live supply at the conductors or to the load. So during a maintenance or repair, it is not possible to isolate the current carrying conductors by just taking out the fuse. Because still there has a possibility to make a conductive path across Earth and phase.
But in the case of a fuse connected in phase. If the circuit has any other conduction path, the complete current still has to flows through the fuse. Thus, a fuse connected in phase can provide all over protection.
The main function of a fuse is to protect the electrical appliances connected in a building from damage by blowing out under faulty or high voltage condition. The fuse is always provided on the phase wire which carries the line current.
If the fuse is provided on the neutral wire instead of phase wire, then during abnormal conditions, tough the fuse wire melts and blows out, the appliances are still connected to the live wire and in case of leakage of any sort, some trouble will arise and cause damage to the appliance.
If the fault is on the neutral wire between the lamp and the fuse provided in it, the fuse will burn off because the neutral wire is at slightly higher potential w.r.t earth and thus the fault current will flow through the neutral wire and the fuse wire blows out.
But even then, current will flow through the live wire. This will cause considerable damage to the wiring and the appliances. So, for these reasons, fuse is always provided in phase and never on neutral!!
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The same may happen if the fuse is connected to neutral. Because the fuse can disconnect the circuit only when the excess current flows completely through the neutral.
But, a circuit can complete or obtain a conduction pathway either by the neutral or earth. So, if any electric shock or earth leakage occurs, the current flows from the phase line to earth. As far as the current is not returning to the neutral, the current continues its flow. But the circuit will still have the connection to the supply. This results in an electrical damage that can cause serious loss. So, the fuse should have to place at a point where all the algebraic sum of current flows. That is the main phase line.
Also, a fuse should completely isolate the load or wiring from the supply by its burn off or on removal. Since, neutral is not a live conductor coming from the source, disconnecting a neutral line can only open the current path through neutral. But, the live phase still carries the charge. It always provides a live supply at the conductors or to the load. So during a maintenance or repair, it is not possible to isolate the current carrying conductors by just taking out the fuse. Because still there has a possibility to make a conductive path across Earth and phase.
But in the case of a fuse connected in phase. If the circuit has any other conduction path, the complete current still has to flows through the fuse. Thus, a fuse connected in phase can provide all over protection.
The main function of a fuse is to protect the electrical appliances connected in a building from damage by blowing out under faulty or high voltage condition. The fuse is always provided on the phase wire which carries the line current.
If the fuse is provided on the neutral wire instead of phase wire, then during abnormal conditions, tough the fuse wire melts and blows out, the appliances are still connected to the live wire and in case of leakage of any sort, some trouble will arise and cause damage to the appliance.
If the fault is on the neutral wire between the lamp and the fuse provided in it, the fuse will burn off because the neutral wire is at slightly higher potential w.r.t earth and thus the fault current will flow through the neutral wire and the fuse wire blows out.
But even then, current will flow through the live wire. This will cause considerable damage to the wiring and the appliances. So, for these reasons, fuse is always provided in phase and never on neutral!!
HOPE THIS HELPS YOU...!!
PLZ MARK AS BRAINLST.. ❤
FOLLOW ME.....!!
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