Why use a fuse ？If there is no fuse, wouldn’t it be better to use as much current as the household electrical appliances need? How could there be excessive current?
All electrical appliances have a rated current, but the current will fluctuate when the electrical appliance is working or the power supply system is unstable. In this case, the electrical appliance or circuit will be destroyed, so use a rated current Fuse in the range to protect the circuit and electrical appliances