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Fuses protect by blowing if too much current flows through the fuse and essentially melts the wire. A very high voltage could cause arcing problems. If you keep the same load then increasing the voltage will increase causes an increase in current. The voltage, current and load (Resistance) are related by Ohm's Law
Voltage = Current x Resistance
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What are electrical fuses?
Safety devices used in electrical circuits.AnswerA fuse is an overcurrent protection device, and will operate in the event of a sustained overload current or a short-circuit current.
What is the device used to keep electrical circuits from overheating?
A fuse is a device used to keep electrical circuits from overheating is not a true statement. A fuse is used to protect the wire of the circuit from an over current being applied to the circuit. This over current could be caused by a couple of scenarios. Two non insulated conductors touching one another and creating a short circuit. Another cause could be an non insulated conductor touching adjacent grounded equipment. Whatever the cause the fuse will isolate the fault instantaneously.
How is the minimum fusing current related to the current rating of a fuse?
Each fuse has its own rating. It will be marked on the fuse somewhere.
Why are fuses used for protection of resistive loads?
Fuses actually have a lower resistance that the wire or carrier that is carrying current to and from the fuse. The purpose of a fuse is so that it will burn out before the carrier burns out. When a fuse burns out it breaks the current and therefore no more electricity can pass through it until the fuse is replaced. You gauge the fuse for a little more current than you normally have traveling through the wire. If a power surge of electricity comes through the wire the fuse will burn out instead of damaging the electrical device that is plugged into or wired into the carrier.
Why not replace a fuse with a steel nail?
A fuse is used for protection. If you replace it with a nail, you give up the protection. If the fuse blew, there was a reason, and the fuse protected you from the results of what would have happened if it had not blown, like such minor inconveniences as your TV set getting blasted beyond repair, or your house burning down.
What is used in an electrical circuit to prevent a short current?
A Fuse or a circuit breaker can be used to protect an electric circuit from over loads. A surge arrestor / over voltage relay can be provided for voltage protection An ELCB/ Earth fault Relay may be provided for earth fault protection. Electrix Chennai, India.
What does OPD mean in electric terms?
'Overcurrent protection devices' are used to protect conductors from excessive current flow... a fuse
What is the meaning ampere protection?
Amperes refer to the current in an electrical circuit. Ampere protection is rarely used but it refers to current protection. Typically this will relate to protection against over current events with fuses or circuit breakers.
How many amps of electricity can a wire carry before needing a fuse?
ANY wire being used in electrical wiring requires over-current protection (a fuse or circuit breaker) so that the fuse will blow before an over-loaded wire gets red hot and ignites the insulation and any nearby combustibles.
What are electrical fuses?
Safety devices used in electrical circuits.AnswerA fuse is an overcurrent protection device, and will operate in the event of a sustained overload current or a short-circuit current.
What is the device used to keep electrical circuits from overheating?
A fuse is a device used to keep electrical circuits from overheating is not a true statement. A fuse is used to protect the wire of the circuit from an over current being applied to the circuit. This over current could be caused by a couple of scenarios. Two non insulated conductors touching one another and creating a short circuit. Another cause could be an non insulated conductor touching adjacent grounded equipment. Whatever the cause the fuse will isolate the fault instantaneously.
What size standard fuse should be used for a current of 315 amps?
A standard fuse size for a current of 315 amps would not be practical due to the high current flow. It is recommended to use alternative protection devices such as a circuit breaker or contactor for currents of this magnitude.
Why fuse wires are not used in a circuit containing electric circuit?
The size and composition of fuse wire is designed to "burn through" in an over current situation. That works fine as long as the current is lower than the fused rating. If you were to use the wire in the circuit then all your wire would essentially disintegrate in an over current situation.
Can a capacitor be used as a fuse to limit overload current?
No, a capacitor can not be used as a fuse to limit an overload current condition.
How is the minimum fusing current related to the current rating of a fuse?
Each fuse has its own rating. It will be marked on the fuse somewhere.
What is the used of the fuse in the power supply?
Fuse is used to protect against over load. The fuse blows off if there is overloading in the circuit. This prevents the flow of current in the circuit beyond the position of the fuse. The equipment which is overloaded in the circuit is thus saved.
Why are fuses in plugs?
to provide 'over current' protection due to overload or failure of the appliance, device and also the associated wiring. If the appliance or device draws more current than allowed, the fuse will melt first and open the circuit thus stopping the flow of current. Without a fuse there would be no limit to the current being drawn, the device and also the wires feeding it could overheat or even catch fire. The plug provides a convenient location for the fuse and also allows the fuse to be appropriately sized for the particular device being used.
