Table of Contents
Does fuse wire depend on length?
(i) Is directly proportional to the thickness of the fuse wire. Thicker the fuse wire, higher will be the current rating of the fuse wire. (ii) The current rating of the fuse wire does not depend on its length.
What is current rating of fuse wire?
15A
Once this wire gets melted, the current stops flowing into the circuit and hence the equipment gets saved from high voltage fluctuation. Now, the usual current rating of the fuse wire in the line to feed application of 2kW or more power is 15A. This is the value that is commercially used for construction of fuses.
Does length of fuse matter?
Although electrically, the 3/4 inch fuse is fine (the 250 volt rating is higher than the original which is OK) since the current rating is the same as the original, the fact that it is loose in the holder is not OK. This can cause arcing as contact is made and unmade which could lead to a fire.
Why is fuse wire independent of length?
The length of electric fuse wire is immaterial because it is used to avoid danger due to high current. Therefore the immaterial for fuse is length.
How can we increase the current rating of a fuse?
The current rating of the fuse mainly depends on its operating temperature.
- All fuse wire elements are conductors.
- All conductors have positive temperature co-efficient.
- When the operating temperature of the fuse wire increases resistance also increases.
How do you calculate fuse rating?
The fuse rating can be calculated by dividing the power used by the appliance by the voltage going into the appliance.
How do you calculate fuse wire size?
To find the total amperage in your specific installation, refer to the table below. Find the items that you’re installing and their current requirements. Add the values and divide by 1000 to get your total current in Amps. You can use this value in the fuse size chart above to determine the minimum wire size required.
Is current independent of length?
In short, no, current is not affected by the length of conductor (well, in the real world at least).
On what factor does the current carrying capacity of a fuse depends?
The current carrying capacity of a fuse depends on the material used, the cross sectional area, length of the element, the state of the surface and the surrounding of the fuse.
Why is the fuse rating higher than the current?
The role of a fuse is not to protect the equipment from damage. It’s to ensure that in the event of a fault, the wiring doesn’t overheat and cause a fire. The fuse needs to be rated slightly higher than the maximum operating current of the protected device, so that the fuse won’t blow when the equipment is used.
https://www.youtube.com/watch?v=KjQl70CBVKs