In a house fuse, a thin strip of metal is connected in series with the circuit. This metal strip is designed to melt and break the circuit if the current exceeds a certain level. The rating of a fuse is typically indicated in amperes (A), and it represents the maximum current that the fuse can safely handle before it blows.
When a fault occurs in the circuit, such as a short circuit or an overload, the current flow increases rapidly. If the current exceeds the rating of the fuse, the fuse will melt and break the circuit, preventing further flow of electricity. This protective action helps to safeguard electrical appliances and wiring from damage.
It's important to use fuses with the appropriate rating for each circuit in a house. If a fuse with too high a rating is used, it may not blow even when there is an excessive current flow, potentially leading to dangerous situations. On the other hand, using a fuse with too low a rating may cause it to blow frequently, even under normal operating conditions.
