Asked by Anjanasubhash | 22nd Jan, 2010, 07:13: PM
Fuse can take current up to a limit if it exceeds it gets melted because fo joule heating
joule heating ---- I2R
R= SL /A (Here + wire cross secion, L= length, a= Apecific sesistivity of material)
joule heating T = I2SL /A
If you use same material and length for both the fuses melting temperature is same.
To allow higher current (15A) snd should not exceed the temperature A should be more.
So 15 A fuse require thicker wire.
Answered by | 22nd Jan, 2010, 07:33: PM
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