Why not use copper wire and iron wire instead of fuse?
According to the thermal effect of current (Q=I^2Rt), if the current is too large, the lead antimony alloy has a large resistance, so the heat generated is too much, and the lead antimony alloy with low melting point will fuse, thus protecting the circuit and the appliance.
Lead antimony alloy has large resistance and low melting point, which is the physical property of lead antimony alloy.
Can not use copper wire and iron wire instead of fuse:Because copper wire or wire resistance is small, high melting point, in the current is too large, the heat generated is not easy to reach the melting point, so it will not fuse, can not play the role of insurance.
