Johnn Posted January 30, 2022 Posted January 30, 2022 Hello How fuse work 80A 20A work does battery give differrnt current
Bufofrog Posted January 30, 2022 Posted January 30, 2022 Could you rephrase the question and supply more information?
mistermack Posted February 1, 2022 Posted February 1, 2022 On 1/30/2022 at 12:19 PM, Johnn said: Hello How fuse work 80A 20A work does battery give differrnt current Yes, a car battery voltage is standardised at 12v, but the current depends on the resistance. ( I = v/r ) If the resistance r becomes too low, for example if there is a short circuit, the current will rise very high, and could potentially cause a fire. So a fuse is put in the circuit that is designed to melt at the nominal amperage, as in 80A or 20A. That breaks the circuit and avoids the fire risk. The same principle applies in house wiring, but with a different voltage.
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